EP2580512A2 - Device and method for blocking pipelines, especially under the sea - Google Patents

Device and method for blocking pipelines, especially under the sea

Info

Publication number
EP2580512A2
EP2580512A2 EP11795249.9A EP11795249A EP2580512A2 EP 2580512 A2 EP2580512 A2 EP 2580512A2 EP 11795249 A EP11795249 A EP 11795249A EP 2580512 A2 EP2580512 A2 EP 2580512A2
Authority
EP
European Patent Office
Prior art keywords
hydraulic
pipe
elements
press
blocked
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.)
Withdrawn
Application number
EP11795249.9A
Other languages
German (de)
French (fr)
Other versions
EP2580512A4 (en
Inventor
József Bereznai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bery Intellectual Properties Kft
Original Assignee
Bery Intellectual Properties Kft
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bery Intellectual Properties Kft filed Critical Bery Intellectual Properties Kft
Publication of EP2580512A2 publication Critical patent/EP2580512A2/en
Publication of EP2580512A4 publication Critical patent/EP2580512A4/en
Withdrawn legal-status Critical Current

Links

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
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B29/00—Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
    • E21B29/08—Cutting or deforming pipes to control fluid flow
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B29/00—Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
    • E21B29/12—Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground specially adapted for underwater installations

Definitions

  • the invention relates to a device and method for blocking, choking damaged oil and gas pipelines.
  • the device and method of the invention is applicable to prevent in the shortest possible time dangerous materials from getting into the environment in order to avoid disasters in the sea.
  • the invention is a device and method for blocking damaged oil and gas pipelines, pipe stubs.
  • the device can be installed onto the cross-section of a portion of the pipeline before the damaged part.
  • the aim of the invention is to solve the problem caused by the oil spill in the
  • the solution proposed in the present invention serves two purposes. On the one hand it is applicable to block a pipe stub definitively under the sea for example in cases similar to the oil spill in the Gulf of Mexico. On the other hand it can be used as a safety device. It can be installed purposefully into the present or future blowout preventer systems or it can be used as a supplemental device in order to eliminate disasters.
  • a U-shaped or C-shaped frame preferably a metal frame structure provided with hydraulically closing press- jaws is applied onto the pipe from the side (from above). This may be done posteriorly. In this manner installation is not hampered by a damaged piece, deformed pipe, etc.
  • An advantage of this is that the material flowing out from the pipe-end or a damaged part will not have a negative (pushing, thrusting) effect i.e. will not hamper the installation.
  • the path of the outflowing material is blocked in such a way that the pipe is pressed - softly, without pressure shock from two sides until it is entirely flattened - by means of high-capacity hydraulic power cylinders using wedge-shaped clamping elements.
  • the pipe may be blocked definitively by using some kind of conventional technology.
  • the device itself may be provided with mechanics for blocking the pipe permanently e.g. by means of locking screws, and other joining elements. In a certain case the operation may have several stages using several similar devices serially.
  • the present invention on the one hand is a device for blocking damaged oil and gas pipelines, pipe stubs which can be applied onto the cross-section of a portion of the pipeline before its damaged part.
  • the device comprises an essentially U-shaped framework equipped with hydraulic elements fixed to it which are adapted to press the pipe from two opposite directions in order to block it and are operated by means of an external hydraulic source.
  • the device is further equipped with lifting elements enabling its proper positioning on the pipes or pipe stubs to be blocked.
  • a device is applied onto the cross-section of a portion of the pipeline before its damaged part.
  • the device comprises an essentially U-shaped framework equipped with hydraulic elements fixed to it which are adapted to press the pipe from two opposite directions in order to block it and are operated by means of an external hydraulic source.
  • the device is positioned from above on the pipes or pipe stubs to be blocked and by operating the hydraulic elements the pipe to be blocked is flattened.
  • Figure 1 is a perspective view of an embodiment of the device according to the invention.
  • Figure 2 shows the front-view of the device of Figure 1 in its normal position
  • Figure 3 shows the front view of the device of Figure 1 in a position after being operated
  • Figure 4 shows the side view of the device of Figure 2
  • Figure 5a shows the perspective view of an embodiment of the device according to the invention before the device is activated
  • Figure 5b shows the perspective view of the device of Figure 5a after activation
  • Figure 6 shows the perspective view of a further embodiment of the device according to the invention
  • Figure 7 shows the front-view of the device of Figure 6 in its normal position
  • Figure 8 shows the front view of the device of Figure 6 in a position after being operated
  • Figure 9 shows the side view of the device of Figure 6.
  • the device comprises a preferably U-shaped or similarly structured frame 1 formed from two parallel plates.
  • Hydraulic elements 2 are fixed to frame 1 for example in between the two parallel plates.
  • Fixed to the movable ends of these hydraulic elements one or more wedge-shaped press-jaws 3 forming a press head are provided.
  • the hydraulic elements are power cylinders provided with an aperture 4 through which they can be activated.
  • activation may be executed through a pipeline from a supply base for example a hydraulic source floating on the sea.
  • hydraulic supporters 5 are used by means of which the optimal position of press-jaws 3 may be set.
  • the frame 1 of the device may be provided with lifting elements 9 in order to ensure lifting and fixing.
  • electromechanical elements my also be used.
  • the opened part of frame 1 is connected together by means of a connecting element (not shown) so that when the pipe is pressed transversally from two opposite directions, i.e. flattened, frame 1 is not able to widen out.
  • the U-shaped frame 1 of the device according to the invention may also be constructed in other manner, for example it may have a tubular frame. For operating the device hydraulic pressure or electromechanical apparatuses are needed.
  • Figure 2 shows the device in its normal position that is, operating pressure is not transmitted to hydraulic elements 2 through aperture 4, thus press-jaws 3 are in an open state, away from each other.
  • the device is placed on the pipeline to be blocked by means of lifting elements 9 then positioning of the device is carried out by means of hydraulic supporters 5 in such a way that press-jaws 3 are advantageously perpendicular to the pipeline.
  • the pipeline to be blocked extends vertically, after the device according to the invention is submerged it is turned to the side e.g. by means of suitably formed lifting elements 9.
  • the two parallel plates of frame 1 between which the hydraulic elements are fixed have the same shape.
  • FIG. 4 shows the device from the side.
  • hydraulic supporters 5 are provided in order to facilitate its positioning.
  • FIGs 5a and 5b the above embodiment of the device is shown during operation.
  • the device placed on pipeline 10 can be seen where pipeline 10 is positioned in the centre line of press-jaws 3 by means of hydraulic supporter 5.
  • a state is shown when pressure is applied on power cylinders 2 through apertures 4 and press-jaws 3 press the pipeline from two sides and block the cross- section of the pipe and thereby the flow path in pipeline 10.
  • FIG. 6 an other embodiment of the device according to the invention can be seen. Similarly to the device shown in Figure 1 it consists of a frame 1 , hydraulic power cylinders 2 positioned and fixed in frame 1 and press-jaws 3.
  • the device of Figure 6 is provided with an additional mechanical transmission means 7 enabling even greater exertion of force.
  • an electromagnet 6 is applied to hydraulic supporter 5 by means of which not only positioning but fixing of pipeline 10 to hydraulic supporters 5 is also possible.
  • Mechanical transmission means 7 of the device is fitted in between hydraulic elements 2 and press-jaws 3. This device also can be moved and positioned on pipeline 10 advantageously from above by means of lifting elements 9.
  • Figures 7 and 8 operation of the device according to the above embodiment is shown.
  • Figure 7 shows the device in its normal position when pressure is not transmitted to power cylinders 2 through apertures 4.
  • Press-jaws 3 are in an open state, away from each other. In this manner positioning of the device on the (e.g. damaged) pipeline 10 by means of lifting elements 9 is enabled.
  • mechanical transmission means 3 is connected to press-jaws 3 and power cylinders 2.
  • FIG 9 shows the side view of the device according to the above embodiment.
  • both hydraulic supporters 5 are provided with electromagnet 6 which may be used placed and positioned optionally in any other embodiment.
  • any of the hydraulic elements may be substituted by electromechanical, electrically driven elements.
  • the opened part of the frame is secured or connected together by means of a connecting element (not shown) so that when the pipe is pushed from two opposite directions, i.e. flattened, the frame is not able to widen out.
  • the frame may have any other shapes different from U-shape, e.g. it may be closed or may be formed from two halves.
  • the components of it may be different from the ones shown in the Figures, e.g. tubular frame.
  • Hydraulic cylinders and mechanical elements must be measured according to the cross-section, the wall thickness of the pipe to be blocked, the pressure of the flowing material, the temperature and other factors (e.g. water-pressure in case of seas).
  • a new generation of blowout preventers may be developed.
  • the device according to the invention can be integrated in the already working blowout preventers or it may be used as a separate unit on order to enhance safety to avoid catastrophes.
  • periodic maintenance can be performed even in errorless cases. In this manner the safety of operation is enhanced, the risk is reduced. After checking the device can be installed and used again.

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pipe Accessories (AREA)
  • Pipeline Systems (AREA)

Abstract

Device and method for blocking damaged oil and gas pipelines, pipe stubs which can be applied onto the cross-section of a portion of the pipeline before the damaged part. The device comprises an essentially U-shaped frame (1) equipped with hydraulic elements (2) fixed to it which are adapted to press the pipe from two opposite sides for blocking it and are operated by means of an external hydraulic source. The device is further equipped with lifting elements (9) enabling its proper positioning on the pipes or pipe stubs to be blocked.

Description

Device and Method for Blocking Pipelines, Especially Under the Sea
The invention relates to a device and method for blocking, choking damaged oil and gas pipelines. Especially, the device and method of the invention is applicable to prevent in the shortest possible time dangerous materials from getting into the environment in order to avoid disasters in the sea. Specifically, the invention is a device and method for blocking damaged oil and gas pipelines, pipe stubs. The device can be installed onto the cross-section of a portion of the pipeline before the damaged part.
The aim of the invention is to solve the problem caused by the oil spill in the
Gulf of Mexico when an oil platform exploded in 2010 causing an ecological catastrophe. After the platform caught fire operating of the blowout preventer mechanism for blocking the pipe was not possible, efforts to stop the oil spill one after the other failed. Up to now perfect solution for blocking these pipes has not been found and similar accidents may occur at any time in any parts of the world causing irreparable damage to the environment.
The solution proposed in the present invention serves two purposes. On the one hand it is applicable to block a pipe stub definitively under the sea for example in cases similar to the oil spill in the Gulf of Mexico. On the other hand it can be used as a safety device. It can be installed purposefully into the present or future blowout preventer systems or it can be used as a supplemental device in order to eliminate disasters.
According to the basic principle of the invention a U-shaped or C-shaped frame preferably a metal frame structure provided with hydraulically closing press- jaws is applied onto the pipe from the side (from above). This may be done posteriorly. In this manner installation is not hampered by a damaged piece, deformed pipe, etc. An advantage of this is that the material flowing out from the pipe-end or a damaged part will not have a negative (pushing, thrusting) effect i.e. will not hamper the installation. After proper positioning, fixing (which may be done by means of hydraulic and/or electromagnetic elements) and stiffening of the frame the path of the outflowing material is blocked in such a way that the pipe is pressed - softly, without pressure shock from two sides until it is entirely flattened - by means of high-capacity hydraulic power cylinders using wedge-shaped clamping elements. After the material is prevented from flowing out, the pipe may be blocked definitively by using some kind of conventional technology. However, the device itself may be provided with mechanics for blocking the pipe permanently e.g. by means of locking screws, and other joining elements. In a certain case the operation may have several stages using several similar devices serially.
As it was mentioned in the preamble the present invention on the one hand is a device for blocking damaged oil and gas pipelines, pipe stubs which can be applied onto the cross-section of a portion of the pipeline before its damaged part. The device comprises an essentially U-shaped framework equipped with hydraulic elements fixed to it which are adapted to press the pipe from two opposite directions in order to block it and are operated by means of an external hydraulic source. The device is further equipped with lifting elements enabling its proper positioning on the pipes or pipe stubs to be blocked.
On the other hand during the method of the invention a device is applied onto the cross-section of a portion of the pipeline before its damaged part. The device comprises an essentially U-shaped framework equipped with hydraulic elements fixed to it which are adapted to press the pipe from two opposite directions in order to block it and are operated by means of an external hydraulic source. The device is positioned from above on the pipes or pipe stubs to be blocked and by operating the hydraulic elements the pipe to be blocked is flattened.
The invention will be described with reference to the accompanying drawings in which:
Figure 1 is a perspective view of an embodiment of the device according to the invention;
Figure 2 shows the front-view of the device of Figure 1 in its normal position;
Figure 3 shows the front view of the device of Figure 1 in a position after being operated;
Figure 4 shows the side view of the device of Figure 2;
Figure 5a shows the perspective view of an embodiment of the device according to the invention before the device is activated;
Figure 5b shows the perspective view of the device of Figure 5a after activation; Figure 6 shows the perspective view of a further embodiment of the device according to the invention;
Figure 7 shows the front-view of the device of Figure 6 in its normal position;
Figure 8 shows the front view of the device of Figure 6 in a position after being operated; and
Figure 9 shows the side view of the device of Figure 6.
In Figure 1 a simple possible embodiment of the device according to the invention can be seen. Here the device comprises a preferably U-shaped or similarly structured frame 1 formed from two parallel plates. Hydraulic elements 2 are fixed to frame 1 for example in between the two parallel plates. Fixed to the movable ends of these hydraulic elements one or more wedge-shaped press-jaws 3 forming a press head are provided. Advantageously, the hydraulic elements are power cylinders provided with an aperture 4 through which they can be activated. In case of under sea operation activation may be executed through a pipeline from a supply base for example a hydraulic source floating on the sea. For proper positioning of the device onto the pipeline hydraulic supporters 5 are used by means of which the optimal position of press-jaws 3 may be set. The frame 1 of the device may be provided with lifting elements 9 in order to ensure lifting and fixing. Instead of hydraulic elements electromechanical elements my also be used. Advantageously, in order to prevent frame 1 from decrease in size and opening, the opened part of frame 1 is connected together by means of a connecting element (not shown) so that when the pipe is pressed transversally from two opposite directions, i.e. flattened, frame 1 is not able to widen out. The U-shaped frame 1 of the device according to the invention may also be constructed in other manner, for example it may have a tubular frame. For operating the device hydraulic pressure or electromechanical apparatuses are needed.
Operation of the device of Figure 1 is described with reference to Figures 2-3.
Figure 2 shows the device in its normal position that is, operating pressure is not transmitted to hydraulic elements 2 through aperture 4, thus press-jaws 3 are in an open state, away from each other. In this manner positioning of the device on the pipe to be blocked is enabled. The device is placed on the pipeline to be blocked by means of lifting elements 9 then positioning of the device is carried out by means of hydraulic supporters 5 in such a way that press-jaws 3 are advantageously perpendicular to the pipeline. When the pipeline to be blocked extends vertically, after the device according to the invention is submerged it is turned to the side e.g. by means of suitably formed lifting elements 9. Advantageously, the two parallel plates of frame 1 between which the hydraulic elements are fixed have the same shape.
In a following step pressure is applied to apertures 4 whereupon hydraulic power cylinders 2 start pushing press-jaws 3 which at the same time press the pipe to be blocked. This closed position can be seen is Figure 3. Figure 4 shows the device from the side. Here it can be seen that on both sides of the device hydraulic supporters 5 are provided in order to facilitate its positioning. By properly positioning the device on the pipes or pipe stubs from above and by operating hydraulic elements 2 the pipe to be blocked becomes substantially flat (closed).
In Figures 5a and 5b the above embodiment of the device is shown during operation. In Figure 5a the device placed on pipeline 10 can be seen where pipeline 10 is positioned in the centre line of press-jaws 3 by means of hydraulic supporter 5. In Figure 5b a state is shown when pressure is applied on power cylinders 2 through apertures 4 and press-jaws 3 press the pipeline from two sides and block the cross- section of the pipe and thereby the flow path in pipeline 10.
In Figure 6 an other embodiment of the device according to the invention can be seen. Similarly to the device shown in Figure 1 it consists of a frame 1 , hydraulic power cylinders 2 positioned and fixed in frame 1 and press-jaws 3. The device of Figure 6 is provided with an additional mechanical transmission means 7 enabling even greater exertion of force. In case of this embodiment an electromagnet 6 is applied to hydraulic supporter 5 by means of which not only positioning but fixing of pipeline 10 to hydraulic supporters 5 is also possible. Mechanical transmission means 7 of the device is fitted in between hydraulic elements 2 and press-jaws 3. This device also can be moved and positioned on pipeline 10 advantageously from above by means of lifting elements 9.
In Figures 7 and 8 operation of the device according to the above embodiment is shown. Figure 7 shows the device in its normal position when pressure is not transmitted to power cylinders 2 through apertures 4. Press-jaws 3 are in an open state, away from each other. In this manner positioning of the device on the (e.g. damaged) pipeline 10 by means of lifting elements 9 is enabled. As it can be seen mechanical transmission means 3 is connected to press-jaws 3 and power cylinders 2.
When pressure is applied through apertures 4 power cylinders 2 push press- jaws 3 together by means of mechanical transmission 7. This closing process continues until the pipe is flattened to a required extent. If mechanical transmission means 7 is set in such a manner that it is able to minimally exceed the lower dead centre of the mechanics during pressing and abuts against an adjusted bumper 8 then the device in its closed state becomes self-closing. With this solution after the pipe is flattened and blocked hydraulic pressure may be terminated while the pipe remains blocked. This state can be seen in Figure 8.
Figure 9 shows the side view of the device according to the above embodiment. Here, it can be seen that both hydraulic supporters 5 are provided with electromagnet 6 which may be used placed and positioned optionally in any other embodiment.
In possible embodiments of the device any of the hydraulic elements may be substituted by electromechanical, electrically driven elements.
In order to prevent the frame from decrease in size and opening, preferably (but not necessarily) the opened part of the frame is secured or connected together by means of a connecting element (not shown) so that when the pipe is pushed from two opposite directions, i.e. flattened, the frame is not able to widen out.
The frame may have any other shapes different from U-shape, e.g. it may be closed or may be formed from two halves. The components of it may be different from the ones shown in the Figures, e.g. tubular frame.
Hydraulic cylinders and mechanical elements must be measured according to the cross-section, the wall thickness of the pipe to be blocked, the pressure of the flowing material, the temperature and other factors (e.g. water-pressure in case of seas). Through the application of the present invention a new generation of blowout preventers may be developed. As a safety element the device according to the invention can be integrated in the already working blowout preventers or it may be used as a separate unit on order to enhance safety to avoid catastrophes. When it is used as a separate unit - since it is not an integral part of the blowout preventer - periodic maintenance can be performed even in errorless cases. In this manner the safety of operation is enhanced, the risk is reduced. After checking the device can be installed and used again.

Claims

Claims
1. Device for blocking damaged oil and gas pipelines, pipe stubs, the device can be applied onto the cross-section of a portion of the pipeline before the damaged part characterized in that said device comprises an essentially U-shaped frame (1) equipped with hydraulic elements (2) fixed to it which are adapted to press the pipe from two opposite sides for blocking it and are operated by means of an external hydraulic source, said device is further equipped with lifting elements (9) enabling its proper positioning on the pipes or pipe stubs to be blocked.
2. Device according to claim 1 characterized in that said hydraulic elements (2) are hydraulic power cylinders (4).
3. Device according to claim 1 characterized in that said frame (1) is formed from two parallel plates and said hydraulic elements (2) are fixed in between them.
4. Device according to claim 1 characterized in that it is provided with hydraulic supporters (5).
5. Device according to claim 4 characterized in that said hydraulic supporters (5) are provided with electromagnet (6) enabling the pipeline (10) to be positioned and fixed in accordance with said hydraulic supporters (5).
6. Device according to claim 1 characterized in that it is equipped with a mechanical transmission means (7) installed between hydraulic elements (2) and press-jaws (3).
7. Device according to claim 6 characterized in that said mechanical transmission means (7) is self-closing in its closed state.
8. Method for blocking damaged oil and gas pipelines, pipe stubs during the method a device is applied onto the cross-section of a portion of the pipeline before its damaged part characterized in that said device comprises an essentially U-shaped frame (1) equipped with hydraulic elements (2) fixed to it which are adapted to press and block the pipe from two opposite directions and are operated by means of an external hydraulic source, said device is positioned from above on the pipes or pipe stubs to be blocked and by operating said hydraulic elements (2) the pipe to be blocked is flattened.
9. Method according to claim 8 characterized in that said frame (1) is provided with lifting elements (9) enabling its proper positioning on the pipes or pipe stubs to be blocked.
10. Method according to claim 8 characterized in that said device is equipped with a mechanical transmission means (7) installed between said hydraulic elements (2) and press-jaws (3).
EP11795249.9A 2010-06-10 2011-06-09 Device and method for blocking pipelines, especially under the sea Withdrawn EP2580512A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
HU1000305A HUP1000305A1 (en) 2010-06-10 2010-06-10 Apparatus and method for shuting off piplines especially under the sea
PCT/HU2011/000053 WO2011158049A2 (en) 2010-06-10 2011-06-09 Device and method for blocking pipelines, especially under the sea

Publications (2)

Publication Number Publication Date
EP2580512A2 true EP2580512A2 (en) 2013-04-17
EP2580512A4 EP2580512A4 (en) 2014-05-07

Family

ID=89989770

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11795249.9A Withdrawn EP2580512A4 (en) 2010-06-10 2011-06-09 Device and method for blocking pipelines, especially under the sea

Country Status (7)

Country Link
EP (1) EP2580512A4 (en)
CN (1) CN103210249A (en)
CA (1) CA2810760A1 (en)
EA (1) EA201390004A1 (en)
HU (1) HUP1000305A1 (en)
MX (1) MX2012014218A (en)
WO (1) WO2011158049A2 (en)

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Publication number Priority date Publication date Assignee Title
RU184039U1 (en) * 2017-08-17 2018-10-12 Федеральное государственное образовательное учреждение высшего образования "Сибирский государственный автомобильно-дорожный университет (СибАДИ)" Device for sealing a damaged section of a trunk pipeline by flattening and blocking a pipe cross section
CN108729870A (en) * 2018-05-17 2018-11-02 哈尔滨工程大学 Underwater non-closed circumferentially cutting rotating cutter-head driving mechanism
CN108436597A (en) * 2018-05-17 2018-08-24 哈尔滨工程大学 Deep underwater pipes work tool
CN111059357B (en) * 2019-12-04 2021-12-28 深圳海油工程水下技术有限公司 Supporting platform for maintenance of marine pipe

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GB257902A (en) * 1925-09-05 1927-09-29 Tiefbohrtechnik Und Maschb Ag An improved method of shutting off or throttling the flowing out of fluids, vapours or gases from bore or well tubes
US3741517A (en) * 1971-02-09 1973-06-26 Texaco Inc Subterranean clamping mechanism for submarine wells
GB2171051A (en) * 1985-02-15 1986-08-20 Avon Lippiatt Hobbs Pipe compressing device
US5458439A (en) * 1993-04-29 1995-10-17 Sonsub International Management Inc. Pipe attachment and receiving assembly

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US3626497A (en) * 1969-08-06 1971-12-07 Lucian T Lambert Plastic pipe clamp
DE2815705C2 (en) * 1978-04-12 1986-10-16 Rolf 3100 Celle Rüße Method and device for centering casing pipes
RU2200085C2 (en) * 2000-10-26 2003-03-10 Открытое акционерное общество "Ракетно-космическая корпорация "Энергия" им. С.П.Королева" Apparatus for pinching metallic pipelines
CA2341916A1 (en) * 2001-03-19 2002-09-19 Gaetan Champagne New distant pe pipe squeezer

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Publication number Priority date Publication date Assignee Title
GB257902A (en) * 1925-09-05 1927-09-29 Tiefbohrtechnik Und Maschb Ag An improved method of shutting off or throttling the flowing out of fluids, vapours or gases from bore or well tubes
US3741517A (en) * 1971-02-09 1973-06-26 Texaco Inc Subterranean clamping mechanism for submarine wells
GB2171051A (en) * 1985-02-15 1986-08-20 Avon Lippiatt Hobbs Pipe compressing device
US5458439A (en) * 1993-04-29 1995-10-17 Sonsub International Management Inc. Pipe attachment and receiving assembly

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2011158049A2 *

Also Published As

Publication number Publication date
WO2011158049A3 (en) 2012-02-09
MX2012014218A (en) 2013-04-11
HUP1000305A1 (en) 2011-12-28
HU1000305D0 (en) 2010-08-30
WO2011158049A2 (en) 2011-12-22
EA201390004A1 (en) 2013-06-28
CA2810760A1 (en) 2011-12-22
CN103210249A (en) 2013-07-17
EP2580512A4 (en) 2014-05-07

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