CA2650104A1 - Pipeline tool - Google Patents
Pipeline tool Download PDFInfo
- Publication number
- CA2650104A1 CA2650104A1 CA002650104A CA2650104A CA2650104A1 CA 2650104 A1 CA2650104 A1 CA 2650104A1 CA 002650104 A CA002650104 A CA 002650104A CA 2650104 A CA2650104 A CA 2650104A CA 2650104 A1 CA2650104 A1 CA 2650104A1
- Authority
- CA
- Canada
- Prior art keywords
- pipe
- tool according
- tool
- pipe engaging
- engaging member
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 239000012530 fluid Substances 0.000 claims description 49
- 238000012360 testing method Methods 0.000 claims description 43
- 238000007789 sealing Methods 0.000 claims description 29
- 238000000034 method Methods 0.000 claims description 19
- 230000006835 compression Effects 0.000 claims description 13
- 238000007906 compression Methods 0.000 claims description 13
- 230000008878 coupling Effects 0.000 claims description 11
- 238000010168 coupling process Methods 0.000 claims description 11
- 238000005859 coupling reaction Methods 0.000 claims description 11
- 125000006850 spacer group Chemical group 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 claims description 6
- 238000012546 transfer Methods 0.000 claims description 2
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 239000007787 solid Substances 0.000 description 9
- 238000002955 isolation Methods 0.000 description 6
- 230000006378 damage Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/10—Means for stopping flow from or in pipes or hoses
- F16L55/12—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ
- F16L55/128—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose
- F16L55/1283—Plugging pig
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/10—Means for stopping flow from or in pipes or hoses
- F16L55/12—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ
- F16L55/128—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/10—Means for stopping flow from or in pipes or hoses
- F16L55/12—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ
- F16L55/128—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose
- F16L55/132—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose the closure device being a plug fixed by radially deforming the packing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/10—Means for stopping flow from or in pipes or hoses
- F16L55/12—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ
- F16L55/128—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose
- F16L55/136—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ introduced axially into the pipe or hose the closure device being a plug fixed by radially expanding or deforming a split ring, hooks or the like
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/26—Pigs or moles, i.e. devices movable in a pipe or conduit with or without self-contained propulsion means
- F16L55/28—Constructional aspects
- F16L55/40—Constructional aspects of the body
- F16L55/44—Constructional aspects of the body expandable
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2853—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipe joints or seals
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L2101/00—Uses or applications of pigs or moles
- F16L2101/30—Inspecting, measuring or testing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L2101/00—Uses or applications of pigs or moles
- F16L2101/70—Drill-well operations
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
A pipeline tool (10) adapted for location within a pipe (11) comprises a mandrel (12), a first, inboard end (13) and a second, outboard end (14). First and second pipe engaging members (17, 18) are coupled to the mandrel (12) and each of the pipe engaging members (17, 18) is selected from one of a seal element, a lock member and a flange member. Pistons (23, 29) are operatively associated with the pipe engaging members (17, 18) and the pistons (23, 29) are adapted to urge the pipe engaging members (17, 18) into engagement with the pipe (11). A third pipe engaging member (53) may also be provided. The pipeline tool (10) is modular and is configured for performing a number of different pipeline functions through selection of the pipe engaging members (17, 18).
Description
4 . .. . . . . . . . .. . . ..
PIPELINE TOOL
FIELD OF THE INVENTION
This invention relates to a tool for use in isolating at least a portion of a tubular member such as pipe, pipeline or the like. In particular, but not exclusively, embodiments of the present invention relate to a multi-purpose pipeline integrity tool.
BACKGROUND OF THE INVENTION
In many industries there is a requirement to transport fluid over distance and typically this may be achieved via a system of pipes, tubes, pipe modules, pipelines or the like. In the oil and gas industry, for example, a pipeline may comprise a series of pipe modules which are transported to and assembled on site via bolted or welded flange connections. Each module may also comprise a number of components coupled together.
Historically, the testing, sealing and handling of pipelines or pipe modules has been carried out by bespoke tooling. A variety of tools have been developed, each tool configured to perform a dedicated function. For example, in order to pressure test a weld in a pipe, one method includes sealing an open end of the pipe, typically by welding a cap onto the pipe end; by inserting an isolation plug into the end of the pipe; or by sliding a mechanical cap over the end of the pipe. With the end of the pipe sealed, a test pressure is applied in the pipe and by monitoring this pressure, the integrity of the weld may be assessed.
Alternatively, or additionally, it may be necessary to isolate a section of pipe, for example, to block flow in a pipe in order to permit the insertion of a branch or tee connection.
In some circumstances, it may also be necessary to deploy a tool to facilitate handling of a section of pipe or pipeline, for example, where a section of pipe has been damaged or is otherwise in need of replacement.
{
PIPELINE TOOL
FIELD OF THE INVENTION
This invention relates to a tool for use in isolating at least a portion of a tubular member such as pipe, pipeline or the like. In particular, but not exclusively, embodiments of the present invention relate to a multi-purpose pipeline integrity tool.
BACKGROUND OF THE INVENTION
In many industries there is a requirement to transport fluid over distance and typically this may be achieved via a system of pipes, tubes, pipe modules, pipelines or the like. In the oil and gas industry, for example, a pipeline may comprise a series of pipe modules which are transported to and assembled on site via bolted or welded flange connections. Each module may also comprise a number of components coupled together.
Historically, the testing, sealing and handling of pipelines or pipe modules has been carried out by bespoke tooling. A variety of tools have been developed, each tool configured to perform a dedicated function. For example, in order to pressure test a weld in a pipe, one method includes sealing an open end of the pipe, typically by welding a cap onto the pipe end; by inserting an isolation plug into the end of the pipe; or by sliding a mechanical cap over the end of the pipe. With the end of the pipe sealed, a test pressure is applied in the pipe and by monitoring this pressure, the integrity of the weld may be assessed.
Alternatively, or additionally, it may be necessary to isolate a section of pipe, for example, to block flow in a pipe in order to permit the insertion of a branch or tee connection.
In some circumstances, it may also be necessary to deploy a tool to facilitate handling of a section of pipe or pipeline, for example, where a section of pipe has been damaged or is otherwise in need of replacement.
{
2 Whilst bespoke tooling may provide a tool or tools which is/are designed and manufactured in accordance with the specific requirements of a given job, it will be recognised that the lead time for providing such tooling may often be short and, as such, this requires a significant stock in tools and tool components to accommodate the variations in pipe dimensions, pressure requirements and the like.
SUMMARY OF THE INVENTION
According to a first aspect of the present invention there is provided a tool for use in isolating at least a portion of a pipe comprising:
a body adapted for location in a pipe;
first and second pipe engaging members coupled to the body, the first and second pipe engaging members adapted to engage the pipe in response to a fluid pressure force, wherein each of the first and second pipe engaging members is selected from one of a seal element, a lock member and a flange member.
The tool may further comprise a third pipe engaging member. The third pipe engaging member may comprise a lock member for securing the tool within the pipe.
A tool according to embodiments of the present invention may be adapted for use as an annular test tool, a flange test tool, an isolation tool, a pipe end sealing tool or a pipe handling and retrieval tool by utilising a common body and by selection of the pipe engaging members.
The first and second pipe engaging member may be mounted to the body by any suitable means. For example, the tool may comprise a first carrier member for mounting the first pipe engaging member to the body and a second carrier member for mounting the second pipe engaging member to the body. Each carrier member may be secured to the body by a bolted or threaded connection. Each carrier member may define or provide mounting for a flange that extends around at least a portion of the respective pipe engaging member. The carrier member and/or the flange may assist in protecting the respective pipe engaging member.
SUMMARY OF THE INVENTION
According to a first aspect of the present invention there is provided a tool for use in isolating at least a portion of a pipe comprising:
a body adapted for location in a pipe;
first and second pipe engaging members coupled to the body, the first and second pipe engaging members adapted to engage the pipe in response to a fluid pressure force, wherein each of the first and second pipe engaging members is selected from one of a seal element, a lock member and a flange member.
The tool may further comprise a third pipe engaging member. The third pipe engaging member may comprise a lock member for securing the tool within the pipe.
A tool according to embodiments of the present invention may be adapted for use as an annular test tool, a flange test tool, an isolation tool, a pipe end sealing tool or a pipe handling and retrieval tool by utilising a common body and by selection of the pipe engaging members.
The first and second pipe engaging member may be mounted to the body by any suitable means. For example, the tool may comprise a first carrier member for mounting the first pipe engaging member to the body and a second carrier member for mounting the second pipe engaging member to the body. Each carrier member may be secured to the body by a bolted or threaded connection. Each carrier member may define or provide mounting for a flange that extends around at least a portion of the respective pipe engaging member. The carrier member and/or the flange may assist in protecting the respective pipe engaging member.
3 In use, load forces transferred through the body may be transferred through the respective carrier member to at least one of the pipe engaging members to urge the respective pipe engaging member into engagement or enhanced engagement with the pipe.
The tool may further comprise one or more spacer for facilitating engagement of the pipe engaging members with the pipe. Each spacer may be adapted for location between the carrier member and the seal element. Alternatively, each spacer may be provided between the body and the carrier as required. The spacer and/or the carrier member may be dimensioned so as to facilitate engagement between the pipe engaging members and the pipe in a variety of pipe internal diameters.
The tool may further comprise at least one piston operatively associated with the first pipe engaging member. A piston chamber may be defined between the, or each, first piston and the body. The at least one first piston may be adapted to move in a first direction relative to the body in response to the fluid pressure force to urge the first pipe engaging member into engagement with the pipe.
In a first embodiment, the tool may further compnse at least one piston operatively associated with the second pipe engaging member. A piston chamber may be defined between the, or each, second piston and the body. The at least one second piston may be adapted to move in a second direction relative to the body in response to the fluid pressure force.
The fluid pressure force may result in movement of the at least one first piston in a first direction and movement of the at least one second piston in a second, opposite, direction, thereby urging the first and second pipe engaging members into contact with the pipe inner wall. Each piston may be adapted to move in response to a common fluid pressure force. Altematively, each piston may be adapted to move in response to a separate fluid pressure force.
The first engaging member may comprise a seal element adapted to provide sealing engagement with the pipe inner wall. The seal element may take any _ _ , ,
The tool may further comprise one or more spacer for facilitating engagement of the pipe engaging members with the pipe. Each spacer may be adapted for location between the carrier member and the seal element. Alternatively, each spacer may be provided between the body and the carrier as required. The spacer and/or the carrier member may be dimensioned so as to facilitate engagement between the pipe engaging members and the pipe in a variety of pipe internal diameters.
The tool may further comprise at least one piston operatively associated with the first pipe engaging member. A piston chamber may be defined between the, or each, first piston and the body. The at least one first piston may be adapted to move in a first direction relative to the body in response to the fluid pressure force to urge the first pipe engaging member into engagement with the pipe.
In a first embodiment, the tool may further compnse at least one piston operatively associated with the second pipe engaging member. A piston chamber may be defined between the, or each, second piston and the body. The at least one second piston may be adapted to move in a second direction relative to the body in response to the fluid pressure force.
The fluid pressure force may result in movement of the at least one first piston in a first direction and movement of the at least one second piston in a second, opposite, direction, thereby urging the first and second pipe engaging members into contact with the pipe inner wall. Each piston may be adapted to move in response to a common fluid pressure force. Altematively, each piston may be adapted to move in response to a separate fluid pressure force.
The first engaging member may comprise a seal element adapted to provide sealing engagement with the pipe inner wall. The seal element may take any _ _ , ,
4 appropriate form and may, for example, comprise a compression seal. The seal element may comprise a solid compression seal, this providing a robust seal element which is suitable for providing compliant sealing even where the internal diameter of the pipe varies, is irregular or has been damaged.
Movement of the at least one first piston may act to compress the seal element, this resulting in radial movement of a sealing surface of the seal element into engagement with the pipe inner wall.
In this first embodiment, the second pipe engaging member may comprise a second seal element adapted to provide sealing engagement with the pipe inner wall.
The second engaging member may comprise a solid compression seal of similar form to the first engaging member, though other seal elements may be used.
Movement of the at least one second piston may act to compress the second seal element, this resulting in radial movement of a sealing surface of the second seal element into engagement with the pipe inner wall.
The seal elements may be self-energised in that once a minimum pressure differential is obtained across the seal elements, the intemal pipe pressure will tend to maintain the seal elements in the energised configuration.
Furthermore, a test pressure force appiied by pressurising the pipe may act in the same direction as the first piston such that sealing between the first seal element and the pipe wall may be pressure assisted.
On location within the pipe, the tool may be adapted to define a chamber, which chamber may be defined between the body, the first pipe engaging member, the second pipe engaging member and a wall of the pipe. Accordingly, on achieving sealing engagement with the pipe, the tool may be adapted to isolate a portion of the pipe between the first and second pipe engaging members and the pipe. In order to pressure test a weld, the tool may be adapted for location within the pipe adjacent to the weld to be tested, the first and second pipe engaging members straddling the weld such that the chamber is adjacent to the weld.
_ ,_ _ The tool may further comprise one or more ports for providing fluid to the chamber and, in use, fluid may be supplied via the port to fill and thereby pressurise the chamber. Monitoring the pressure within the chamber may permit the integrity of the weld to be tested, for example, a drop in pressure indicating that the weld may
Movement of the at least one first piston may act to compress the seal element, this resulting in radial movement of a sealing surface of the seal element into engagement with the pipe inner wall.
In this first embodiment, the second pipe engaging member may comprise a second seal element adapted to provide sealing engagement with the pipe inner wall.
The second engaging member may comprise a solid compression seal of similar form to the first engaging member, though other seal elements may be used.
Movement of the at least one second piston may act to compress the second seal element, this resulting in radial movement of a sealing surface of the second seal element into engagement with the pipe inner wall.
The seal elements may be self-energised in that once a minimum pressure differential is obtained across the seal elements, the intemal pipe pressure will tend to maintain the seal elements in the energised configuration.
Furthermore, a test pressure force appiied by pressurising the pipe may act in the same direction as the first piston such that sealing between the first seal element and the pipe wall may be pressure assisted.
On location within the pipe, the tool may be adapted to define a chamber, which chamber may be defined between the body, the first pipe engaging member, the second pipe engaging member and a wall of the pipe. Accordingly, on achieving sealing engagement with the pipe, the tool may be adapted to isolate a portion of the pipe between the first and second pipe engaging members and the pipe. In order to pressure test a weld, the tool may be adapted for location within the pipe adjacent to the weld to be tested, the first and second pipe engaging members straddling the weld such that the chamber is adjacent to the weld.
_ ,_ _ The tool may further comprise one or more ports for providing fluid to the chamber and, in use, fluid may be supplied via the port to fill and thereby pressurise the chamber. Monitoring the pressure within the chamber may permit the integrity of the weld to be tested, for example, a drop in pressure indicating that the weld may
5 have failed.
A tool according to the first embodiment of the present invention may be adapted for use as an annular test tool, the tool permitting localised pressure testing of welds, joints or pipe sections without pressurising the surrounding pipeline. An annular test tool according to the first embodiment of the present invention may be used, for example, to provide ambient or low pressure isolation of a section of pipe.
A tool according to a second embodiment of the present invention may be adapted for use in pressure testing a pipe comprising a flange end, for example, a welded flange connection.
The first pipe engaging member may comprise a seal element adapted to provide sealing engagement with the pipe inner wall and the second pipe engaging member may comprise a flange member adapted to engage a flanged end connection of the pipe. The second carrier member may define or provide mounting for the flange member.
In use, the tool may be adapted for location at an end of the pipe such that the seal element may be located within the pipe and the flange member may be coupled to the flanged end of the pipe to form a flange connection.
The seal element may comprise a solid compression seal of similar form to the seal elements of the first embodiment of the present invention, though other seal elements may be used.
A tool according to the second embodiment may further comprise at least one piston operatively associated with the first pipe engaging member. A piston chamber may be defined between the, or each, first piston and the body. At least one first piston may be adapted to move in response to the fluid pressure force and at least one first piston may be adapted to move in a first direction relative to the body in
A tool according to the first embodiment of the present invention may be adapted for use as an annular test tool, the tool permitting localised pressure testing of welds, joints or pipe sections without pressurising the surrounding pipeline. An annular test tool according to the first embodiment of the present invention may be used, for example, to provide ambient or low pressure isolation of a section of pipe.
A tool according to a second embodiment of the present invention may be adapted for use in pressure testing a pipe comprising a flange end, for example, a welded flange connection.
The first pipe engaging member may comprise a seal element adapted to provide sealing engagement with the pipe inner wall and the second pipe engaging member may comprise a flange member adapted to engage a flanged end connection of the pipe. The second carrier member may define or provide mounting for the flange member.
In use, the tool may be adapted for location at an end of the pipe such that the seal element may be located within the pipe and the flange member may be coupled to the flanged end of the pipe to form a flange connection.
The seal element may comprise a solid compression seal of similar form to the seal elements of the first embodiment of the present invention, though other seal elements may be used.
A tool according to the second embodiment may further comprise at least one piston operatively associated with the first pipe engaging member. A piston chamber may be defined between the, or each, first piston and the body. At least one first piston may be adapted to move in response to the fluid pressure force and at least one first piston may be adapted to move in a first direction relative to the body in
6 response to the fluid pressure force to urge the seal element into engagement with the pipe. Movement of at least one first piston may act to compress the seal element, this resulting in radial movement of a sealing surface of the seal element into engagement with the pipe inner wall.
On location within the pipe, the tool may be adapted to define a chamber, which chamber may be defined between the body, the seal element, the flange member and a wall of the pipe. Accordingly, on achieving sealing engagement with the pipe, the tool may be adapted to isolate a portion of the pipe between the seal element and the flange member.
In order to perform a pressure test, for example to test the flange weld, the tool may be adapted for location at the end of the pipe and the flange member may be coupled to the flanged pipe end to form the flange connection. The weld to be tested may be located between the seal element and the flange connection such that the seal element and flange member straddle the weld. In use, fluid may be supplied via one or more ports to fill and thereby pressurise the chamber between the seal element and the flange member. Monitoring the pressure within the chamber may permit the integrity of the weld to be tested, for example, a drop in pressure indicating that the weld may have failed.
A tool according to a third embodiment of the present invention may be adapted for use in sealing an end of a pipe, for example, but not exclusively, for permitting pressure testing of a pipe spool. The first engaging member may comprise a seal element and the second engaging member may comprise a lock adapted for gripping engagement with the pipe inner wall.
The seal element may comprise a solid compression seal of similar form to the seal elements of the first and second embodiments of the present invention, though other seal elements may be used.
The tool may comprise at least one piston operatively associated with the seal element. A piston chamber may be defined between the, or each, first piston and the body and at least one first piston may be adapted to move in a first direction
On location within the pipe, the tool may be adapted to define a chamber, which chamber may be defined between the body, the seal element, the flange member and a wall of the pipe. Accordingly, on achieving sealing engagement with the pipe, the tool may be adapted to isolate a portion of the pipe between the seal element and the flange member.
In order to perform a pressure test, for example to test the flange weld, the tool may be adapted for location at the end of the pipe and the flange member may be coupled to the flanged pipe end to form the flange connection. The weld to be tested may be located between the seal element and the flange connection such that the seal element and flange member straddle the weld. In use, fluid may be supplied via one or more ports to fill and thereby pressurise the chamber between the seal element and the flange member. Monitoring the pressure within the chamber may permit the integrity of the weld to be tested, for example, a drop in pressure indicating that the weld may have failed.
A tool according to a third embodiment of the present invention may be adapted for use in sealing an end of a pipe, for example, but not exclusively, for permitting pressure testing of a pipe spool. The first engaging member may comprise a seal element and the second engaging member may comprise a lock adapted for gripping engagement with the pipe inner wall.
The seal element may comprise a solid compression seal of similar form to the seal elements of the first and second embodiments of the present invention, though other seal elements may be used.
The tool may comprise at least one piston operatively associated with the seal element. A piston chamber may be defined between the, or each, first piston and the body and at least one first piston may be adapted to move in a first direction
7 relative to the body in response to the fluid pressure force to urge the seal element into sealing engagement with the pipe.
The lock may take any appropriate form and may comprise one or more lock members, the lock members being adapted for engagement with the wall of the pipe.
For example, the lock may comprise a taper lock, the, or each, lock member comprising an inclined surface which may be operatively associated with a corresponding inclined surface. For example, the second carrier member may define or provide mounting for the inclined surface, the, or each, lock member adapted to engage the inclined surface of the second carrier member. The inclined surface may comprise a conical tapered surface. Alternatively, the inclined surface may comprise a flat tapered surface.
The, or each, lock member may comprise teeth, ball bearings or some other surface configuration for assisting in gripping the pipe inner wall.
The tool may further comprise at least one second piston operatively associated with the lock. A second piston chamber may be defined between the, or each, second piston and the body and at least one second piston may be adapted to move in a second direction relative to the body in response to the fluid pressure force.
The fluid pressure force may result in movement of the at least one first piston in a first direction and movement of the at least one second piston in a second, opposite, direction, thereby urging the seal element and the lock into contact with the pipe inner wall.
In use, a test pressure force may be applied by pressurising the pipe, the pressure force acting to eject the tool from the pipe. The tool may be configured to direct a portion of the test pressure force through the body to the inclined surface adjacent to the lock members to urge the lock members into enhanced gripping engagement with the pipe inner wall. Accordingly, the tool may be configured such that the test pressure force acts to increase the grip of the lock members such that the lock may be self-energised. Furthermore, the tool may be configured to control g . . . . . . . . . . . .. . . . .
The lock may take any appropriate form and may comprise one or more lock members, the lock members being adapted for engagement with the wall of the pipe.
For example, the lock may comprise a taper lock, the, or each, lock member comprising an inclined surface which may be operatively associated with a corresponding inclined surface. For example, the second carrier member may define or provide mounting for the inclined surface, the, or each, lock member adapted to engage the inclined surface of the second carrier member. The inclined surface may comprise a conical tapered surface. Alternatively, the inclined surface may comprise a flat tapered surface.
The, or each, lock member may comprise teeth, ball bearings or some other surface configuration for assisting in gripping the pipe inner wall.
The tool may further comprise at least one second piston operatively associated with the lock. A second piston chamber may be defined between the, or each, second piston and the body and at least one second piston may be adapted to move in a second direction relative to the body in response to the fluid pressure force.
The fluid pressure force may result in movement of the at least one first piston in a first direction and movement of the at least one second piston in a second, opposite, direction, thereby urging the seal element and the lock into contact with the pipe inner wall.
In use, a test pressure force may be applied by pressurising the pipe, the pressure force acting to eject the tool from the pipe. The tool may be configured to direct a portion of the test pressure force through the body to the inclined surface adjacent to the lock members to urge the lock members into enhanced gripping engagement with the pipe inner wall. Accordingly, the tool may be configured such that the test pressure force acts to increase the grip of the lock members such that the lock may be self-energised. Furthermore, the tool may be configured to control g . . . . . . . . . . . .. . . . .
8 the portion of the axial force converted to radial force. This may assist in preventing the transfer of excessive radial force to the pipe wall which may deform or otherwise damage the pipe.
The tool may be adapted for location in the pipe such that the test pressure may act in the same direction as the at least one first piston, thereby assisting in providing or maintaining sealing engagement between the seal element and the pipe.
Should the lock fail to grip, the test pressure force will act to eject the tool from the pipe. Due to the fluid pressure applied to the pistons via the piston chambers, where a loss of grip occurs, the lock may still be engaged with the pipe, this permitting a more controlled ejection from the pipe. Furthermore, should the seal element exit the pipe under the test pressure force, fluid will be free to pass through the lock members to exit the pipe and the stored test pressure may be released. This reduces the risk of rapid ejection of the tool from the pipe which could cause injury and or result in damage to the tool and/or the pipe.
A tool according to a fourth embodiment of the present invention may be adapted for providing handling and/or retrieval of a section of pipeline or pipeline. A
tool according to the fourth embodiment may be substantially similar to a tool according to the third embodiment. The first pipe engaging member may comprise a seal element and the second pipe engaging member may comprise a lock.
In this embodiment, the carrier member may define or provide mounting for a coupling member, for example, a pull head, lug, hook or other coupling member for facilitating handling of the pipe. The coupling member may be adapted to engage another tool and may be adapted to facilitate handling of the pipe via the tool.
Alternatively, or in addition, the coupling member may be utilised to facilitate retrieval of the tool from the pipe.
The coupling member may be mounted to the body and the tool may be configured to permit relatively large tensile loads to be transferred through the body via the coupling member. As such, relatively long sections of pipe may be handled effectively by manipulating the tool. The tool may thus be used as a handling device,
The tool may be adapted for location in the pipe such that the test pressure may act in the same direction as the at least one first piston, thereby assisting in providing or maintaining sealing engagement between the seal element and the pipe.
Should the lock fail to grip, the test pressure force will act to eject the tool from the pipe. Due to the fluid pressure applied to the pistons via the piston chambers, where a loss of grip occurs, the lock may still be engaged with the pipe, this permitting a more controlled ejection from the pipe. Furthermore, should the seal element exit the pipe under the test pressure force, fluid will be free to pass through the lock members to exit the pipe and the stored test pressure may be released. This reduces the risk of rapid ejection of the tool from the pipe which could cause injury and or result in damage to the tool and/or the pipe.
A tool according to a fourth embodiment of the present invention may be adapted for providing handling and/or retrieval of a section of pipeline or pipeline. A
tool according to the fourth embodiment may be substantially similar to a tool according to the third embodiment. The first pipe engaging member may comprise a seal element and the second pipe engaging member may comprise a lock.
In this embodiment, the carrier member may define or provide mounting for a coupling member, for example, a pull head, lug, hook or other coupling member for facilitating handling of the pipe. The coupling member may be adapted to engage another tool and may be adapted to facilitate handling of the pipe via the tool.
Alternatively, or in addition, the coupling member may be utilised to facilitate retrieval of the tool from the pipe.
The coupling member may be mounted to the body and the tool may be configured to permit relatively large tensile loads to be transferred through the body via the coupling member. As such, relatively long sections of pipe may be handled effectively by manipulating the tool. The tool may thus be used as a handling device,
9 for example, to recover pipes over a stinger of a pipe-laying vessel after a buckle has occurred, though the tool may be used in any suitable handling operation.
Furthermore the tool in this embodiment can be configured to provide a controlled through port which may be used to facilitate the passing of fluid for pipeline conditioning operations.
A tool according to a fifth embodiment of the present invention may be adapted for use in isolating a section of a pipe, for example, but not exclusively, to block flow in a pipe to permit insertion of a branch or tee connection or to replace a section of pipe.
In this embodiment, the flrst and second pipe engaging members may comprise seal elements and the third engaging member may comprise a lock coupled to the body. The carrier member may define the lock. Altematively, the lock may comprise a separate assembly mounted to the body by a bolt connection or other suitable connection.
The lock may comprise one or more lock members that are adapted to grippingly engage the pipe inner wall. The lock may take any form and may, for example, but not exclusively, comprise a taper lock, the, or each, lock member comprising an inclined surface which may be operatively associated with a corresponding inclined surface to urge the or each lock member into engagement with the pipe inner wall.
In use, an inclined surface of the lock may be adapted to engage a corresponding inclined surface of the lock members such that relative movement urges the lock members into gripping engagement with the pipe inner wall.
Any suitable means for actuating the lock members may be used. For example, the or each lock member may be adapted to engage the pipe in response to a locking force. The locking force may comprise a mechanical force, including for example, a thread connector or other suitable means. Altematively, the locking force may be provided by a hydraulic or pneumatic piston arrangement. The use of hydraulic or pneumatic force facilitates remote locking, where required, for example where the tool is operated remotely or via remote operated vehicle (ROV).
Operation of the first and second pipe engaging members in the third embodiment of the present invention may be substantially similar to that of the first 5 embodiment of the present invention.
The tool may be configured such that at least a portion of a test pressure force applied by pressurising the pipe may be configured to pass through the tool body to the lock members, thereby acting to increase the grip of the lock members such that the lock may be enhanced by the test pressure.
Furthermore the tool in this embodiment can be configured to provide a controlled through port which may be used to facilitate the passing of fluid for pipeline conditioning operations.
A tool according to a fifth embodiment of the present invention may be adapted for use in isolating a section of a pipe, for example, but not exclusively, to block flow in a pipe to permit insertion of a branch or tee connection or to replace a section of pipe.
In this embodiment, the flrst and second pipe engaging members may comprise seal elements and the third engaging member may comprise a lock coupled to the body. The carrier member may define the lock. Altematively, the lock may comprise a separate assembly mounted to the body by a bolt connection or other suitable connection.
The lock may comprise one or more lock members that are adapted to grippingly engage the pipe inner wall. The lock may take any form and may, for example, but not exclusively, comprise a taper lock, the, or each, lock member comprising an inclined surface which may be operatively associated with a corresponding inclined surface to urge the or each lock member into engagement with the pipe inner wall.
In use, an inclined surface of the lock may be adapted to engage a corresponding inclined surface of the lock members such that relative movement urges the lock members into gripping engagement with the pipe inner wall.
Any suitable means for actuating the lock members may be used. For example, the or each lock member may be adapted to engage the pipe in response to a locking force. The locking force may comprise a mechanical force, including for example, a thread connector or other suitable means. Altematively, the locking force may be provided by a hydraulic or pneumatic piston arrangement. The use of hydraulic or pneumatic force facilitates remote locking, where required, for example where the tool is operated remotely or via remote operated vehicle (ROV).
Operation of the first and second pipe engaging members in the third embodiment of the present invention may be substantially similar to that of the first 5 embodiment of the present invention.
The tool may be configured such that at least a portion of a test pressure force applied by pressurising the pipe may be configured to pass through the tool body to the lock members, thereby acting to increase the grip of the lock members such that the lock may be enhanced by the test pressure.
10 A tool according to the fifth embodiment of the present invention permits a dual seal isolation of a section of pipe via the first and second seal elements, while permitting the tool to be locked within the pipe by the lock. Where the pressure supplied to the chamber exceeds the pressure within the pipe, both the first and second engaging members are pressure assisted by the fluid pressure supplied to the chamber between the first and second seal elements.
Accordingly, by selection of the pipe engaging members, a tool according to embodiments of the present invention may be adapted for use as a multi-function pipe integrity test and handling tool.
BRIEF DESCRIPTION OF THE DRAWINGS
These and other aspects of the present invention will now be described, by way of example only, with reference to the accompanying drawings, in which:
Figure 1 is a cross sectional view of a tool according to a first embodiment of the present invention, shown in an annular test tool configuration;
Figure 2 is a cross sectional view of a tool according to a second embodiment of the present invention, shown in a flange test tool configuration;
Figure 3 is a cross sectional view of a tool according to a third embodiment of the present invention, shown in a pipe sealing tool configuration;
. .. . ... . . .. .... ~ .
k . . ... . . . . .. . .. .. . .
Accordingly, by selection of the pipe engaging members, a tool according to embodiments of the present invention may be adapted for use as a multi-function pipe integrity test and handling tool.
BRIEF DESCRIPTION OF THE DRAWINGS
These and other aspects of the present invention will now be described, by way of example only, with reference to the accompanying drawings, in which:
Figure 1 is a cross sectional view of a tool according to a first embodiment of the present invention, shown in an annular test tool configuration;
Figure 2 is a cross sectional view of a tool according to a second embodiment of the present invention, shown in a flange test tool configuration;
Figure 3 is a cross sectional view of a tool according to a third embodiment of the present invention, shown in a pipe sealing tool configuration;
. .. . ... . . .. .... ~ .
k . . ... . . . . .. . .. .. . .
11 Figure 4 is a cross sectional view of a tool according to a fourth embodiment of the present invention, shown in a pipeline retrieval tool configuration;
and Figure 5 is a cross sectional view of a tool according to a fifth embodiment of the present invention, shown in a pipe isolation tool configuration.
DETAILED DESCRIPTION OF THE DRAWINGS
A tool according to embodiments of the present invention provides a modular tool comprising a common body and which can be configured or dressed through selection of pipe engaging members to provide a tool that can perform a number of different pipeline functions.
In reference initially to Figure 1 of the drawings there is shown a tool 10 in accordance with a first embodiment of the present invention, the tool 10 shown located within a pipe 11. It will be understood that reference to the term pipe includes any tubular construction including an oil or gas pipeline, whether subsea, above or below ground, downhole tubing, or indeed any other tubular suitable for transport or storage of fluids.
The tool 10 comprises a body in the form of a generally tubular core or mandrel 12, the tool 10 having a first, inboard end 13 and a second, outboard end 14. A cap 15 is threadedly secured and sealed within a bore 16 of the mandrel
and Figure 5 is a cross sectional view of a tool according to a fifth embodiment of the present invention, shown in a pipe isolation tool configuration.
DETAILED DESCRIPTION OF THE DRAWINGS
A tool according to embodiments of the present invention provides a modular tool comprising a common body and which can be configured or dressed through selection of pipe engaging members to provide a tool that can perform a number of different pipeline functions.
In reference initially to Figure 1 of the drawings there is shown a tool 10 in accordance with a first embodiment of the present invention, the tool 10 shown located within a pipe 11. It will be understood that reference to the term pipe includes any tubular construction including an oil or gas pipeline, whether subsea, above or below ground, downhole tubing, or indeed any other tubular suitable for transport or storage of fluids.
The tool 10 comprises a body in the form of a generally tubular core or mandrel 12, the tool 10 having a first, inboard end 13 and a second, outboard end 14. A cap 15 is threadedly secured and sealed within a bore 16 of the mandrel
12 at the outboard end 14 of the tool 10.
First and second pipe engaging members 17, 18 are coupled to the mandrel 12 and, as shown in Figure 1, the first engaging member 17 comprises an annular seal element 19 in the form of a solid compression seal element. The first engaging member 17 further comprises an annular carrier ring 20 which is threadedly coupled to the mandrel 12, the carrier ring 20 providing mounting for the seal element 19.
The carrier ring 20 further comprises a flange portion 21 which is coupled to and provides mounting for an annular end cap 22 at the inboard end 13. A first piston 23 is operatively associated with the first engaging member 17 and is slidably coupled to the mandrel 12. A piston chamber 24 is defined between the mandrel 12 and the first piston 23.
The second engaging member 18 also comprises an annular seal element 25 in the form of a solid compression seal element. The second engaging member 18 further comprises an annular carrier ring 26 which is threadedly coupled to the mandrel 12, the second carrier ring 26 providing mounting for the second seal element 25. The second carrier ring 26 further comprises a flange portion 27 which is coupled to and provides mounting for an annular end cap 28 at the outboard end 14. A second piston 29 is operatively associated with the second engaging member 18 and is slidably coupled to the mandrel 12. A piston chamber 30 is defined between the mandrel 12 and the second piston 29.
In use, the tool 10 is located within the pipe 11 with the first and second engaging members 17, 18 straddling a weld 31 to be tested. To actuate the pipe engaging members 17, 18, a source of pressurised fluid, such as hydraulic fluid, is supplied to the piston chambers 24, 30, the fluid pressure force urging the first piston 23 towards the inboard end 13 and urging the second piston 29 towards the outboard end 14. The seal elements 19, 25 are compressed and a sealing surface 32 of the first seal element 19 and a sealing surface 33 of the second seal element 25 are urged radially into sealing engagement with the pipe 11.
On engagement with the pipe 11, the first and second pipe engaging members 17, 18, the mandrel 12 and the pipe 11 define an annular chamber 34.
The mandrel 12 further comprises a fluid communication port 35 which is adapted to transport fluid into the annular chamber 34. In use, pressurised fluid 36 is supplied via the port 35 to fill the annular chamber 34. Monitoring the pressure of the fluid 36 in the chamber 34 permits pressure testing of the weld 31 without the requirement to pressurise the surrounding pipe 11. As shown by the arrows 37 in Figure 1, load forces transferred through the mandrel 12 are substantially balanced.
In reference now to Figure 2 of the drawings, there is shown a tool 110 according to a second embodiment of the present invention. The tool 110 comprises
First and second pipe engaging members 17, 18 are coupled to the mandrel 12 and, as shown in Figure 1, the first engaging member 17 comprises an annular seal element 19 in the form of a solid compression seal element. The first engaging member 17 further comprises an annular carrier ring 20 which is threadedly coupled to the mandrel 12, the carrier ring 20 providing mounting for the seal element 19.
The carrier ring 20 further comprises a flange portion 21 which is coupled to and provides mounting for an annular end cap 22 at the inboard end 13. A first piston 23 is operatively associated with the first engaging member 17 and is slidably coupled to the mandrel 12. A piston chamber 24 is defined between the mandrel 12 and the first piston 23.
The second engaging member 18 also comprises an annular seal element 25 in the form of a solid compression seal element. The second engaging member 18 further comprises an annular carrier ring 26 which is threadedly coupled to the mandrel 12, the second carrier ring 26 providing mounting for the second seal element 25. The second carrier ring 26 further comprises a flange portion 27 which is coupled to and provides mounting for an annular end cap 28 at the outboard end 14. A second piston 29 is operatively associated with the second engaging member 18 and is slidably coupled to the mandrel 12. A piston chamber 30 is defined between the mandrel 12 and the second piston 29.
In use, the tool 10 is located within the pipe 11 with the first and second engaging members 17, 18 straddling a weld 31 to be tested. To actuate the pipe engaging members 17, 18, a source of pressurised fluid, such as hydraulic fluid, is supplied to the piston chambers 24, 30, the fluid pressure force urging the first piston 23 towards the inboard end 13 and urging the second piston 29 towards the outboard end 14. The seal elements 19, 25 are compressed and a sealing surface 32 of the first seal element 19 and a sealing surface 33 of the second seal element 25 are urged radially into sealing engagement with the pipe 11.
On engagement with the pipe 11, the first and second pipe engaging members 17, 18, the mandrel 12 and the pipe 11 define an annular chamber 34.
The mandrel 12 further comprises a fluid communication port 35 which is adapted to transport fluid into the annular chamber 34. In use, pressurised fluid 36 is supplied via the port 35 to fill the annular chamber 34. Monitoring the pressure of the fluid 36 in the chamber 34 permits pressure testing of the weld 31 without the requirement to pressurise the surrounding pipe 11. As shown by the arrows 37 in Figure 1, load forces transferred through the mandrel 12 are substantially balanced.
In reference now to Figure 2 of the drawings, there is shown a tool 110 according to a second embodiment of the present invention. The tool 110 comprises
13 a number of common components to the tool 10. Like components in the second embodiment to those in the first embodiment are shown by like numerals incremented by 100.
The first pipe engaging member 117 comprises a seal element 119 adapted to provide sealing engagement with the pipe 111. The first pipe engaging member 117 comprises an annular seal element 119 in the form of a solid compression seal element. The first engaging member 117 further comprises an annular carrier ring 120 which is threadedly coupled to the mandrel 112, the carrier ring 120 providing mounting for the seal element 119. The carrier ring 120 further comprises a flange portion 121 which is coupled to and provides mounting for an annular end cap 122 at the inboard end 113. A first piston 123 is operatively associated with the first engaging member 117 and is slidably coupled to the mandrel 112. A piston chamber 124 is defined between the mandrel 112 and the first piston 123.
The seal element 119 comprises a solid compression seal of similar form to the seal element 19 of the first embodiment of the present invention. The tool further comprises a piston 123 and, in use, the piston 123 is adapted to move in response to a fluid pressure force exerted by fluid supplied to the piston chamber 124 to urge the first seal element 119 into sealing engagement with the pipe 111.
As shown in Figure 2, the second pipe engaging member 38 comprises a flange member 39 adapted to engage a flanged end connection 40 of the pipe 111 to form a flange connection 41. The tool 110 is adapted for location at an end of the pipe 111 such that the flange member 39 of the tool 110 may be coupled to the flanged end 40 of the pipe 111.
Accordingly, on engaging the seal element 119 with the pipe 111, the tool 110 defines an annular chamber 134 between the mandrel 112, the seal element 119, the flange member 39 and the pipe 111.
In order to perform a pressure test, for example to test a flange weld 42, the tool 110 is located towards an end of the pipe 111, the flange member 39 coupled to the flange 40 of the pipe 111 with the weld 42 located between the seal element 119
The first pipe engaging member 117 comprises a seal element 119 adapted to provide sealing engagement with the pipe 111. The first pipe engaging member 117 comprises an annular seal element 119 in the form of a solid compression seal element. The first engaging member 117 further comprises an annular carrier ring 120 which is threadedly coupled to the mandrel 112, the carrier ring 120 providing mounting for the seal element 119. The carrier ring 120 further comprises a flange portion 121 which is coupled to and provides mounting for an annular end cap 122 at the inboard end 113. A first piston 123 is operatively associated with the first engaging member 117 and is slidably coupled to the mandrel 112. A piston chamber 124 is defined between the mandrel 112 and the first piston 123.
The seal element 119 comprises a solid compression seal of similar form to the seal element 19 of the first embodiment of the present invention. The tool further comprises a piston 123 and, in use, the piston 123 is adapted to move in response to a fluid pressure force exerted by fluid supplied to the piston chamber 124 to urge the first seal element 119 into sealing engagement with the pipe 111.
As shown in Figure 2, the second pipe engaging member 38 comprises a flange member 39 adapted to engage a flanged end connection 40 of the pipe 111 to form a flange connection 41. The tool 110 is adapted for location at an end of the pipe 111 such that the flange member 39 of the tool 110 may be coupled to the flanged end 40 of the pipe 111.
Accordingly, on engaging the seal element 119 with the pipe 111, the tool 110 defines an annular chamber 134 between the mandrel 112, the seal element 119, the flange member 39 and the pipe 111.
In order to perform a pressure test, for example to test a flange weld 42, the tool 110 is located towards an end of the pipe 111, the flange member 39 coupled to the flange 40 of the pipe 111 with the weld 42 located between the seal element 119
14 and the flange member 39. Fluid is supplied via a port 135 to fill and thereby pressurise the chamber 134 between the seal element 119 and the flange member 39. Monitoring the pressure within the chamber 134 permits the integrity of the weld 42 to be assessed.
In reference now to Figure 3 of the drawings, there is shown a tool 210 according to a third embodiment of the present invention. The tool 210 comprises a number of common components to the tool 10. Like components in the third embodiment to those in the first embodiment are shown by like numerals incremented by 200.
The first pipe engaging member 217 comprises a seal element 219 adapted to provide sealing engagement with the pipe 211. The first pipe engaging member 217 comprises an annular seal element 219 in the form of a solid compression seal element which is of similar form to the seal element 19 of the first embodiment.
The first engaging member 217 further comprises an annular carrier ring 220 which is threadedly coupled to the mandrel 212, the carrier ring 220 providing mounting for the seal element 219. The carrier ring 220 further comprises a flange portion 221 which is coupled to and provides mounting for an annular end cap 222 at the inboard end 213.
A first piston 223 is operatively associated with the first engaging member 217 and is slidably coupled to the mandrel 212. A piston chamber 224 is defined between the mandrel 212 and the first piston 223.
A piston 229 is operatively associated with the second pipe engaging member 218 and is slidably coupled to the mandrel 212. A second piston chamber 230 is defined between the mandrel 212 and the piston 229.
In the third embodiment, the second pipe engaging member comprises a lock assembly 43 for securing the tool 210 within the pipe 211 and, in particular, adjacent to an end portion of the pipe 211. The lock assembly 43 comprises a modified carrier ring in the form of lock bowl 44, the lock bowl 44 comprising an annular tapered boss which is threadedly coupled to mandrel 212. The lock bowl 44 comprises a conically tapered or flat tapered surface 45.
The lock assembly 43 further comprises a plurality of lock members 46, each of which comprises a gripping surface 47 adapted to grip the pipe 211. The gripping 5 surface 47 has a profiled surface which assists in gripping the respective lock member 46 to the pipe 211. Each lock member 46 further comprises a tapered surface 48 which corresponds to the tapered surface 45 of the lock bowl 44.
To actuate the tool 210, a source of pressurised fluid, such as hydraulic fluid, is supplied to the piston chambers 224, 230, the fluid pressure force urging the first 10 and second pistons 223, 229 towards the inboard and outboard ends 213, 214 of the tool 210. The first piston 223 acts to compress the seal element 219 and a first sealing surface 232 of the first seal element 219 is urged radially into sealing engagement with the pipe 211.
Pressurised fluid supplied to second piston chamber 230 urges the tapered
In reference now to Figure 3 of the drawings, there is shown a tool 210 according to a third embodiment of the present invention. The tool 210 comprises a number of common components to the tool 10. Like components in the third embodiment to those in the first embodiment are shown by like numerals incremented by 200.
The first pipe engaging member 217 comprises a seal element 219 adapted to provide sealing engagement with the pipe 211. The first pipe engaging member 217 comprises an annular seal element 219 in the form of a solid compression seal element which is of similar form to the seal element 19 of the first embodiment.
The first engaging member 217 further comprises an annular carrier ring 220 which is threadedly coupled to the mandrel 212, the carrier ring 220 providing mounting for the seal element 219. The carrier ring 220 further comprises a flange portion 221 which is coupled to and provides mounting for an annular end cap 222 at the inboard end 213.
A first piston 223 is operatively associated with the first engaging member 217 and is slidably coupled to the mandrel 212. A piston chamber 224 is defined between the mandrel 212 and the first piston 223.
A piston 229 is operatively associated with the second pipe engaging member 218 and is slidably coupled to the mandrel 212. A second piston chamber 230 is defined between the mandrel 212 and the piston 229.
In the third embodiment, the second pipe engaging member comprises a lock assembly 43 for securing the tool 210 within the pipe 211 and, in particular, adjacent to an end portion of the pipe 211. The lock assembly 43 comprises a modified carrier ring in the form of lock bowl 44, the lock bowl 44 comprising an annular tapered boss which is threadedly coupled to mandrel 212. The lock bowl 44 comprises a conically tapered or flat tapered surface 45.
The lock assembly 43 further comprises a plurality of lock members 46, each of which comprises a gripping surface 47 adapted to grip the pipe 211. The gripping 5 surface 47 has a profiled surface which assists in gripping the respective lock member 46 to the pipe 211. Each lock member 46 further comprises a tapered surface 48 which corresponds to the tapered surface 45 of the lock bowl 44.
To actuate the tool 210, a source of pressurised fluid, such as hydraulic fluid, is supplied to the piston chambers 224, 230, the fluid pressure force urging the first 10 and second pistons 223, 229 towards the inboard and outboard ends 213, 214 of the tool 210. The first piston 223 acts to compress the seal element 219 and a first sealing surface 232 of the first seal element 219 is urged radially into sealing engagement with the pipe 211.
Pressurised fluid supplied to second piston chamber 230 urges the tapered
15 surfaces 48 of the lock members 46 up the tapered surface 45 of the lock bowl 44 and into gripping engagement with the pipe 211.
In addition, where a test pressure (shown by arrows 49) is applied to the pipe 211, a portion of the pressure force (shown by arrows 50) acting to eject the tool 210 from the pipe 211 is transferred via the mandrel 212 to the lock members 46, further assisting in gripping the tool 210 within the pipe 211. A further portion of the pressure force is applied to the seal element 219 (shown by arrows 249) is transferred though the mandrel 212 to the lock members 46, further assisting in gripping the tool 210 within the pipe 211. Thus the full load from the test pressure is transferred through the lock assembly 43 to the pipe wall 211.
By selection of the taper angle of the lock bowl surface 45 and lock member surface 48, the gripping force may be controlled. For example, a shallow taper angle will accommodate higher test pressures on thicker walled pipes. Test pressures of up to 690 bar have been achieved. Provided sufficient differential pressure is applied, the engagement of the lock bowl 44 and lock members 46 has been found to be
In addition, where a test pressure (shown by arrows 49) is applied to the pipe 211, a portion of the pressure force (shown by arrows 50) acting to eject the tool 210 from the pipe 211 is transferred via the mandrel 212 to the lock members 46, further assisting in gripping the tool 210 within the pipe 211. A further portion of the pressure force is applied to the seal element 219 (shown by arrows 249) is transferred though the mandrel 212 to the lock members 46, further assisting in gripping the tool 210 within the pipe 211. Thus the full load from the test pressure is transferred through the lock assembly 43 to the pipe wall 211.
By selection of the taper angle of the lock bowl surface 45 and lock member surface 48, the gripping force may be controlled. For example, a shallow taper angle will accommodate higher test pressures on thicker walled pipes. Test pressures of up to 690 bar have been achieved. Provided sufficient differential pressure is applied, the engagement of the lock bowl 44 and lock members 46 has been found to be
16 sufficient to maintain the grip of the lock 43 independently of the pressure applied via the piston chambers.
The tool 210 further comprises ports for filling, testing, de-watering and/or venting, may be provided where required and the fluid communication port 235 may be utilised for this purpose.
In the event of a loss of grip, the tool 210 will tend to be forced out of the pipe 211 under the test pressure force 49. Where this occurs, the seal element 219 will exit the pipe 211 with the lock 43 still engaged. The stored pressure from the test would then escape past the tool 210 and the ejection load force 49 acting on the tool 210 would be removed. Thus, the risk of rapid ejection of the tool 210 from the pipe 211 by the test pressure force is reduced.
In reference now to Figure 4 of the drawings, there is shown a tool 310 according to a fourth embodiment of the present invention. Like components between the first embodiment and the fourth embodiment are indicated by like numerals incremented by 300.
In this embodiment, the tool 310 is adapted for use as a pipe gripping or retrieval tool. As shown in Figure 4, the tool 310 is substantially similar to the tool 210 of the third embodiment of the invention.
The tool 310 comprises a modified carrier ring in the form of a pull head 52.
In use, pressurised fluid may be inserted into piston chambers 324, 330, which fluid acts to urge the first piston 323 into engagement with seal element 319.
The sealing element 319 is thus urged radially into sealing engagement with the pipe 311. The second piston 329 is urged in the opposite direction to urge the lock members 346 into gripping engagement with the pipe 311 to secure the tool 310 within the pipe 311. Manipulation of the pipe 311 may thus be achieved by controlling movement of the tool 310 via the pull head 52.
The pull head 52 comprises a bore (shown in dotted line in Figure 4) for permitting fluid to be removed there through. The tool 310 further comprises a boss (not shown) which is larger than the diameter of the pipe 311 into which the tool 310 , O .. . . . . . . . . . . _ . . .. . . . . .. . . . . . .. ... . .
The tool 210 further comprises ports for filling, testing, de-watering and/or venting, may be provided where required and the fluid communication port 235 may be utilised for this purpose.
In the event of a loss of grip, the tool 210 will tend to be forced out of the pipe 211 under the test pressure force 49. Where this occurs, the seal element 219 will exit the pipe 211 with the lock 43 still engaged. The stored pressure from the test would then escape past the tool 210 and the ejection load force 49 acting on the tool 210 would be removed. Thus, the risk of rapid ejection of the tool 210 from the pipe 211 by the test pressure force is reduced.
In reference now to Figure 4 of the drawings, there is shown a tool 310 according to a fourth embodiment of the present invention. Like components between the first embodiment and the fourth embodiment are indicated by like numerals incremented by 300.
In this embodiment, the tool 310 is adapted for use as a pipe gripping or retrieval tool. As shown in Figure 4, the tool 310 is substantially similar to the tool 210 of the third embodiment of the invention.
The tool 310 comprises a modified carrier ring in the form of a pull head 52.
In use, pressurised fluid may be inserted into piston chambers 324, 330, which fluid acts to urge the first piston 323 into engagement with seal element 319.
The sealing element 319 is thus urged radially into sealing engagement with the pipe 311. The second piston 329 is urged in the opposite direction to urge the lock members 346 into gripping engagement with the pipe 311 to secure the tool 310 within the pipe 311. Manipulation of the pipe 311 may thus be achieved by controlling movement of the tool 310 via the pull head 52.
The pull head 52 comprises a bore (shown in dotted line in Figure 4) for permitting fluid to be removed there through. The tool 310 further comprises a boss (not shown) which is larger than the diameter of the pipe 311 into which the tool 310 , O .. . . . . . . . . . . _ . . .. . . . . .. . . . . . .. ... . .
17 is to be inserted in order to assist in preventing the tool 310 from being uncontrollably drawn into the pipe 311.
In reference now to Figure 5 of the drawings, there is shown a tool according to a fifth embodiment of the present invention. As shown in Figure 5, the tool 410 is substantially similar to the tool 10 of the first embodiment of the invention.
Like components between the first and fifth embodiments are indicated by like numerals incremented by 400.
The first and second engaging members 417, 418 each comprise a compression seal element 419, 425.
The tool 410 according to the fifth embodiment further comprises a third pipe engaging member 53, the third engaging member 53 being coupled to the inboard end 413 of the tool 410. The third engaging member 53 comprises a modified carrier member in the form of a lock bowl 54 which is coupled to the mandrel 412 by a bolt connection 55.
The third engaging member 53 further comprises lock members 56 which are adapted to engage the pipe 411. Any suitable means for actuating the lock members 56 may be used. In the embodiment shown in Figure 5, the lock bowl 54 comprises a piston member actuator 57 adapted to translate the lock members 56 relative to the lock bowl 54 to engage the pipe 411.
In use, a tapered surface 58 of the lock bowl 54 engages a corresponding tapered surface 59 of the lock members 56 such that relative movement urges the lock members 56 into gripping engagement with the pipe 411.
A portion of the load forces (shown by arrows 60) are transferred through the mandrel 412 via the first carrier ring 426 to the lock bowl 54 which acts to urge the lock members 56 into gripping or enhanced gripping engagement with the pipe 411.
A tool 410 according to this embodiment of the present invention permits isolation of a section of pipe 411, for example to permit a connection or tee (not shown) to be connected to the pipe 411. A tool 410 according to this embodiment of
In reference now to Figure 5 of the drawings, there is shown a tool according to a fifth embodiment of the present invention. As shown in Figure 5, the tool 410 is substantially similar to the tool 10 of the first embodiment of the invention.
Like components between the first and fifth embodiments are indicated by like numerals incremented by 400.
The first and second engaging members 417, 418 each comprise a compression seal element 419, 425.
The tool 410 according to the fifth embodiment further comprises a third pipe engaging member 53, the third engaging member 53 being coupled to the inboard end 413 of the tool 410. The third engaging member 53 comprises a modified carrier member in the form of a lock bowl 54 which is coupled to the mandrel 412 by a bolt connection 55.
The third engaging member 53 further comprises lock members 56 which are adapted to engage the pipe 411. Any suitable means for actuating the lock members 56 may be used. In the embodiment shown in Figure 5, the lock bowl 54 comprises a piston member actuator 57 adapted to translate the lock members 56 relative to the lock bowl 54 to engage the pipe 411.
In use, a tapered surface 58 of the lock bowl 54 engages a corresponding tapered surface 59 of the lock members 56 such that relative movement urges the lock members 56 into gripping engagement with the pipe 411.
A portion of the load forces (shown by arrows 60) are transferred through the mandrel 412 via the first carrier ring 426 to the lock bowl 54 which acts to urge the lock members 56 into gripping or enhanced gripping engagement with the pipe 411.
A tool 410 according to this embodiment of the present invention permits isolation of a section of pipe 411, for example to permit a connection or tee (not shown) to be connected to the pipe 411. A tool 410 according to this embodiment of
18 the present invention is of use, in particular, in lower pressure applications, where previously no positive gripping engagement has traditionally been provided.
It should be understood that the embodiments described are merely exemplary of the present invention and that various modifications may be made without departing from the scope of the invention.
For example, the tool may further comprise a vent port, for example, for facilitating de-watering and/or for bleeding of hydraulic fluid for testing, where required.
A valve member, for example, but not exclusively, a ball valve or check valve may be provided and may be mounted on the body to permit de-watering.
In general, it will be understood that components of a tool according to one configuration of the tool may be interchangeable such that, for example, the lock bowl of the fifth embodiment or the pull head of the fourth embodiment may be coupled to a tool according to the other embodiments, should this be required.
It should be understood that the embodiments described are merely exemplary of the present invention and that various modifications may be made without departing from the scope of the invention.
For example, the tool may further comprise a vent port, for example, for facilitating de-watering and/or for bleeding of hydraulic fluid for testing, where required.
A valve member, for example, but not exclusively, a ball valve or check valve may be provided and may be mounted on the body to permit de-watering.
In general, it will be understood that components of a tool according to one configuration of the tool may be interchangeable such that, for example, the lock bowl of the fifth embodiment or the pull head of the fourth embodiment may be coupled to a tool according to the other embodiments, should this be required.
Claims (60)
1. A tool for use in isolating at least a portion of a pipe, the tool comprising:
a body adapted for location in a pipe;
first and second pipe engaging members coupled to the body, at least one of the first and second pipe engaging members adapted to engage the pipe in response to a fluid pressure force, wherein each of the first and second pipe engaging members is selected from one of a seal element, a lock member and a flange member.
a body adapted for location in a pipe;
first and second pipe engaging members coupled to the body, at least one of the first and second pipe engaging members adapted to engage the pipe in response to a fluid pressure force, wherein each of the first and second pipe engaging members is selected from one of a seal element, a lock member and a flange member.
2. A tool according to claim 1, wherein the tool is adapted to isolate a section of the pipe defined between the body, the first pipe engaging member, the second pipe engaging member and the pipe inner wall.
3. A tool according to claim 1 or 2, wherein the first and second pipe engaging members are adapted to engage the pipe to isolate a section of the pipe inner wall.
4. A tool according to claim 1, 2 or 3, wherein the tool is adapted to define a chamber between the body, the first pipe engaging member, the second pipe engaging member and the pipe inner wall.
5. A tool according to claim 4, wherein the chamber is adapted to receive a test pressure to permit testing of the isolated pipe section.
6. A tool according to claim 4 or 5, further comprising a port for providing fluid to the chamber.
7. A tool according to any preceding claim, wherein the tool is adapted to block the pipe bore.
8. A tool according to any preceding claim, wherein at least one of the selected pipe engaging members is adapted to be coupled to the body by a carrier member.
9. A tool according to claim 8, comprising a first carrier member for mounting the first pipe engaging member to the body and a second carrier member for mounting the second pipe engaging member to the body.
10. A tool according to claim 8 or 9, wherein the carrier member is configured to provide a common interface for coupling the selected pipe engaging members to the body.
11. A tool according to claim 8, 9 or 10, wherein the carrier member defines or provides mounting for a flange that extends around at least a portion of the respective pipe engaging member.
12. A tool according to any one of claims 8 to 11, wherein the carrier member is configured to transfer load forces transferred through the body to the pipe engaging member to urge the pipe engaging member into engagement or enhanced engagement with the pipe.
13. A tool according to any preceding claim, further comprising at least one piston operatively associated with the selected first pipe engaging member.
14. A tool according to claim 13, wherein a piston chamber is defined between the first member piston and the body.
15. A tool according to claim 13 or 14, wherein the first member piston is adapted to move relative to the body in response to the fluid pressure force to urge the first pipe engaging member into engagement or enhanced engagement with the pipe.
16. A tool according to any preceding claim, further comprising at least one piston operatively associated with the selected second pipe engaging member.
17. A tool according to claim 16, wherein a piston chamber is defined between the second member piston and the body.
18. A tool according to claim 16 or 17, wherein the second member piston is adapted to move relative to the body in response to the fluid pressure force to urge the second pipe engaging member into engagement or enhanced engagement with the pipe.
19. A tool according to claim 16, 17 or 18, wherein the first member piston and the second member piston are adapted to move in response to a common fluid pressure force.
20. A tool according to any one of claims 16, 17 or 18, wherein the first member piston and the second member piston are adapted to move in response to a separate fluid pressure force.
21. A tool according to any preceding claim, wherein the selected first and second pipe engaging members are pressure assisted.
22. A tool according to claim 21, wherein a test pressure force applied by pressurising the pipe acts to enhance engagement between the pipe engaging members and the pipe.
23. A tool according to any preceding claim, wherein the selected first pipe engaging member comprises a seal element adapted to provide sealing engagement with the pipe inner wall.
24. A tool according to claim 23, wherein the first pipe engaging member comprises a compression seal.
25. A tool according to any preceding claim, wherein the selected second pipe engaging member comprises a seal element adapted to provide sealing engagement with the pipe inner wall.
26. A tool according to claim 25, wherein the selected second pipe engaging member comprises a compression seal.
27. A tool according to claim 25 or 26, wherein at least one of the seal elements are self-energised.
28. A tool according to any one of claims 1 to 24, wherein the selected second pipe engaging member comprises a flange member.
29. A tool according to claim 28, wherein the selected second pipe engaging member is adapted to be coupled to a flanged end of the pipe to form a flange connection.
30. A tool according to any one of claims 1 to 24, wherein the selected second pipe engaging member comprises a lock adapted for gripping engagement with the pipe inner wall.
31. A tool according to claim 30, wherein the lock is pressure assisted.
32. A tool according to claim 30 or 31, wherein the lock comprises at least one lock member, the lock members being adapted for engagement with the pipe wall.
33. A tool according to claims 30, 31 or 32, wherein the lock comprises a taper lock.
34. A tool according to claim 32 or 33, wherein the lock member comprises at least one of teeth, ball bearings and a surface configuration configured to assist in gripping the pipe inner wall.
35. A tool according to any preceding claim, further comprising a coupling member adapted to facilitate handling of the tool.
36. A tool according to claim 35, wherein the coupling member comprises at least one of a pull head, a lug, and a hook.
37. A tool according to any one of claims 8 to 36, wherein the carrier member defines or provides mounting for the coupling member.
38. A tool according to any preceding claim, further comprising a third pipe engaging member.
39. A tool according to any one of claims 8 to 38, wherein the carrier member defines or provides mounting for the selected third pipe engaging member.
40. A tool according to claim 38, wherein the selected third pipe engaging member comprises a separate assembly mounted to the body.
41. A tool according to claim 38, 39 or 40, wherein the third pipe engaging member comprises a lock for securing the tool within the pipe.
42. A tool according to claim 41, wherein the lock comprises at least one lock member adapted to grippingly engage the pipe inner wall.
43. A tool according to claim 41 or 42, wherein the lock comprises a taper lock.
44. A tool according to any preceding claim, wherein the tool is adapted to define a through-port for selectively passing fluid through the tool.
45. A tool according to any preceding claim, further comprising at least one spacer for facilitating engagement of the selected pipe engaging members with the pipe.
46. A tool according to any one of claims 8 to 45, wherein at least one spacer is adapted for location between the carrier member and the pipe engaging member.
47. A tool according to any one of claims 8 to 46, wherein at least one spacer is adapted for location between the body and the carrier member.
48. A method of isolating at least a portion of a pipe, the method comprising the steps:
providing a body and a plurality of pipe engaging members adapted for mounting on the body, each pipe engaging member comprising one of a seal element, a lock member and a flange member;
selecting first and second pipe engaging members and mounting these on the body;
locating the tool in a pipe and engaging the pipe engaging members with the pipe to isolate at least a portion of the pipe, at least one of the pipe engaging members engaging the pipe in response to a fluid pressure force.
providing a body and a plurality of pipe engaging members adapted for mounting on the body, each pipe engaging member comprising one of a seal element, a lock member and a flange member;
selecting first and second pipe engaging members and mounting these on the body;
locating the tool in a pipe and engaging the pipe engaging members with the pipe to isolate at least a portion of the pipe, at least one of the pipe engaging members engaging the pipe in response to a fluid pressure force.
49. A method according to claim 48, further comprising coupling at least one of the selected first and second pipe engaging members to the body by a carrier member.
50. A method according to claim 48 or 49, further comprising inserting a test pressure into a chamber defined between the body, the first pipe engaging member, the second pipe engaging member and the pipe inner wall.
51. A method according to claim 50, further comprising monitoring the pressure in the chamber.
52. A method according to any one of claims 48 to 51, further comprising providing a piston operatively associated with the first pipe engaging member and moving the first member piston is response to the fluid pressure force to urge the first pipe engaging member into engagement with the pipe wall.
53. A method according to any one of claims 48 to 52, further comprising providing a piston operatively associated with the second pipe engaging member and moving the second member piston is response to the fluid pressure force to urge the second pipe engaging member into engagement with the pipe wall.
54. A method according to any one of claims 48 to 53, further comprising transferring load forces from the body to at least one of the selected pipe engaging members to urge the respective pipe engaging member into engagement or enhanced engagement with the pipe.
55. A method according to any one of claims 48 to 54, wherein at least one of the selected first and second pipe engaging members comprises a seal element and the method comprises isolating a portion of the pipe upstream of the seal element.
56. A method according to claim 55, wherein each of the first pipe engaging member and the second pipe engaging member comprise a seal element and the method comprises isolating a portion of the pipe wall between the seal elements.
57. A method according to any one of claims 48 to 55, wherein the selected second pipe engaging member comprises a lock and the method further comprises securing the tool to the pipe with the lock.
58. A method according to any one of claims 48 to 55, wherein the selected second pipe engaging member comprises a flange member and the method further comprises securing the tool to the pipe via the flange member.
59. A method according to any one of claims 48 to 58, further comprising locating the tool at an end of a pipe to plug the end of the pipe.
60. A method according to any one of claims 48 to 59, further comprising pressurising the pipe to apply a test pressure force on the tool.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0800475.6 | 2008-01-11 | ||
| GBGB0800475.6A GB0800475D0 (en) | 2008-01-11 | 2008-01-11 | Pipeline tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2650104A1 true CA2650104A1 (en) | 2009-07-11 |
Family
ID=39144770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002650104A Abandoned CA2650104A1 (en) | 2008-01-11 | 2009-01-09 | Pipeline tool |
Country Status (2)
| Country | Link |
|---|---|
| CA (1) | CA2650104A1 (en) |
| GB (2) | GB0800475D0 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2498969B (en) | 2012-02-01 | 2016-10-19 | Stats (Uk) Ltd | Low pressure hot tap pipeline isolation |
| GB201311146D0 (en) * | 2013-06-23 | 2013-08-07 | Stats Uk Ltd | Method and assembly for pipe pressure testing |
| NO346618B1 (en) * | 2015-02-24 | 2022-10-31 | Halfwave As | An apparatus and method for inspecting a pipeline |
| CN104930296B (en) * | 2015-06-12 | 2017-03-22 | 美钻能源科技(上海)有限公司 | Hydraulic bidirectional pipe sealing device |
| CN116293127B (en) * | 2023-05-22 | 2023-08-04 | 泸州聚购科技发展有限公司 | Pipe connection structure of tubular reactor for continuous production of barium titanate |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3593749A (en) * | 1969-08-04 | 1971-07-20 | Edwin E Reardon | Pipeline pig stopper |
| US4332277A (en) * | 1980-09-03 | 1982-06-01 | Hughes Undersea Coupling, Inc. | Pipeline pigging plug |
| US4591477A (en) * | 1982-09-30 | 1986-05-27 | Rettew Robert A | Apparatus and method for servicing a nuclear reactor system |
| US4484602A (en) * | 1983-01-17 | 1984-11-27 | Cues, Inc. | Packer for sealing lateral lines |
| SU1657835A1 (en) * | 1988-11-09 | 1991-06-23 | Ворошиловградский Проектно-Технологический Институт Машиностроения Им.Хху1 Съезда Кпсс | Device for testing pipelines |
| CA2312577C (en) * | 2000-06-27 | 2005-02-08 | Horst Gotowik | Apparatus for testing or isolating a segment of pipe |
| IES20020089A2 (en) * | 2002-02-08 | 2003-08-20 | Carsphairn Ltd | An improved pipeline isolation tool |
-
2008
- 2008-01-11 GB GBGB0800475.6A patent/GB0800475D0/en not_active Ceased
-
2009
- 2009-01-09 CA CA002650104A patent/CA2650104A1/en not_active Abandoned
- 2009-01-09 GB GB0900322.9A patent/GB2456229B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| GB0900322D0 (en) | 2009-02-11 |
| GB2456229A (en) | 2009-07-15 |
| GB0800475D0 (en) | 2008-02-20 |
| GB2456229B (en) | 2013-02-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Discontinued |
Effective date: 20130104 |