EP0201283B1 - Dual tool spider for pipes - Google Patents
Dual tool spider for pipes Download PDFInfo
- Publication number
- EP0201283B1 EP0201283B1 EP86303312A EP86303312A EP0201283B1 EP 0201283 B1 EP0201283 B1 EP 0201283B1 EP 86303312 A EP86303312 A EP 86303312A EP 86303312 A EP86303312 A EP 86303312A EP 0201283 B1 EP0201283 B1 EP 0201283B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- spider
- string
- body portions
- portions
- dual
- 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.)
- Expired
Links
- 241000239290 Araneae Species 0.000 title claims abstract description 26
- 230000009977 dual effect Effects 0.000 title claims abstract description 15
- 238000005553 drilling Methods 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/04—Casing heads; Suspending casings or tubings in well heads
- E21B33/047—Casing heads; Suspending casings or tubings in well heads for plural tubing strings
-
- 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
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/10—Slips; Spiders ; Catching devices
Definitions
- This invention relates to an apparatus for handling pipes or tubes during assembly of lengths of tubular pipe to form a string.
- a tubing string is made up of a number of interconnected pipes or tubes.
- Each tube is capable of being made up by connecting an externally screw-threaded male end of one tube into an internally screw-threaded female end of another tube.
- the various interconnected lengths of tube in the form of a string are then fed down a bore hole.
- the string is raised and lowered from the bore hole using a well-known system of elevators and spiders.
- elevators and spiders are mounted above a drill rig floor and in order to assemble a string the upper end of a section of pipe is engaged by an elevator and raised sufficiently above a string to allow the new section of pipe to be made up with the upper end of the string by means of a tong.
- the upper end of the string is held against rotation by a spider incorporating gripping elements known as slips.
- An object of the present invention is to provide an improved form of spider for dual string systems.
- a dual string spider comprising first and second body portions each defining a string receiving aperture therethrough and hingedly connected together at one side thereof, and actuator means for separating the two body portions about their hinge by a predetermined amount whereby, in use, the distance between strings passing through the aperture in each body portion can be varied.
- the actuator means is a piston and cylinder device connected between the first and second body portions.
- a spider for a dual string system comprising a rigid spider body e. g. of steel which is formed in two cooperating portions 2 and 3 hinged together at 4.
- Each portion 2 and 3 in its closed position as shown in the drawing defiries a pair of slip bowls 5, 6 adapted to operatively surround a pair of adjacent parallel strings. Gripping elements or slips (not shown) are adapted to be located in each slip bowl 5, 6 in known manner.
- the first portion 2 of the spider has welded thereto an outwardly extending bracket 7 having a vertical pivot pin 8 extending therethrough.
- a piston 9 Connected to the pivot pin 8 is the outer end of a piston 9 which is associated with an hydraulic cylinder 10 whose other end is pivotably mounted on a vertical pivot pin 11 carried by a bracket 12 which is welded to the second portion 3 of the spider.
- Each portion 2 and 3 of the spider is mounted on a flat plinth 13 through the intermediary of rollers (not shown) which facilitate movement of each of the two portions of the spider over the surface of the plinth 13.
- the dual parallel strings operatively associated with the slip bowls 5, 6 during normal operation can be separated from each other by actuation of the piston and cylinder device 9, 10 to cause the centres of the drilling strings to be distanced from each other by a distance sufficient to permit the required tong operation on make up of a pip joint on one string without engagement of the other adjacent string by the nose of the tong.
- the slip centres can be increased in their spacing 20.95 cm to (8.25") at approximately 689,5 MPa (100 psi).
- rollers carried by the underside of each portion 2, 3 of the spider permits the two portions 2, 3 of the spider to be separated from each other about the hinge 4 by movement over the surface of the plinth 13 utilising considerably less power than would otherwise be the case.
Landscapes
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
- Drilling Tools (AREA)
- Devices For Opening Bottles Or Cans (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
- Ropes Or Cables (AREA)
- Vehicle Body Suspensions (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
- Actuator (AREA)
Abstract
Description
- This invention relates to an apparatus for handling pipes or tubes during assembly of lengths of tubular pipe to form a string.
- Normally a tubing string is made up of a number of interconnected pipes or tubes. Each tube is capable of being made up by connecting an externally screw-threaded male end of one tube into an internally screw-threaded female end of another tube.
- The various interconnected lengths of tube in the form of a string are then fed down a bore hole. The string is raised and lowered from the bore hole using a well-known system of elevators and spiders. Such elevators and spiders are mounted above a drill rig floor and in order to assemble a string the upper end of a section of pipe is engaged by an elevator and raised sufficiently above a string to allow the new section of pipe to be made up with the upper end of the string by means of a tong. During this movement the upper end of the string is held against rotation by a spider incorporating gripping elements known as slips. When the string with new pipe section attached is then lowered into the borehole, the string is first released by the spider and the string lowered by the elevator.
- It is well known to employ elevators and spiders which can handle dual strings i. e. a pair of parallel strings arranged to be fed down a single borehole. In such dual string arrangements, the nose of the tong, during make up on one string, tends to engage the adjacent string unless the two strings are forced apart. To date, such separation is effected by any convenient means and in many cases is carried out merely by inserting a rigid element between the strings and forcing them apart. This can result in damage to the tubes of the strings and can frequently be dangerous to personnel engaged in the operation.
- An object of the present invention is to provide an improved form of spider for dual string systems.
- According to the present invention there is provided a dual string spider comprising first and second body portions each defining a string receiving aperture therethrough and hingedly connected together at one side thereof, and actuator means for separating the two body portions about their hinge by a predetermined amount whereby, in use, the distance between strings passing through the aperture in each body portion can be varied.
- Preferably, the actuator means is a piston and cylinder device connected between the first and second body portions.
- An embodiment of the present invention will now be described, by way of example, with reference to the accompanying drawing which is a diagramatic perspective view of a spider according to the present invention.
- Referring to the drawing, a spider for a dual string system comprising a rigid spider body e. g. of steel which is formed in two cooperating
portions 2 and 3 hinged together at 4. Eachportion 2 and 3 in its closed position as shown in the drawing defiries a pair ofslip bowls slip bowl first portion 2 of the spider has welded thereto an outwardly extending bracket 7 having a vertical pivot pin 8 extending therethrough. Connected to the pivot pin 8 is the outer end of a piston 9 which is associated with anhydraulic cylinder 10 whose other end is pivotably mounted on avertical pivot pin 11 carried by abracket 12 which is welded to the second portion 3 of the spider. Eachportion 2 and 3 of the spider is mounted on aflat plinth 13 through the intermediary of rollers (not shown) which facilitate movement of each of the two portions of the spider over the surface of theplinth 13. - In operation of the spider of the invention, the dual parallel strings operatively associated with the
slip bowls cylinder device 9, 10 to cause the centres of the drilling strings to be distanced from each other by a distance sufficient to permit the required tong operation on make up of a pip joint on one string without engagement of the other adjacent string by the nose of the tong. For example, in an arrangement wherein the slip centres are spaced from each other 15.9 cm by (6.25") during normal operation in the closed position, the slip centres can be increased in their spacing 20.95 cm to (8.25") at approximately 689,5 MPa (100 psi). - The rollers carried by the underside of each
portion 2, 3 of the spider permits the twoportions 2, 3 of the spider to be separated from each other about thehinge 4 by movement over the surface of theplinth 13 utilising considerably less power than would otherwise be the case.
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT86303312T ATE36031T1 (en) | 1985-05-10 | 1986-05-01 | TWIN TUBE STRING WEDGE. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8511967 | 1985-05-10 | ||
GB858511967A GB8511967D0 (en) | 1985-05-10 | 1985-05-10 | Dual tool spider for pipes |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0201283A1 EP0201283A1 (en) | 1986-11-12 |
EP0201283B1 true EP0201283B1 (en) | 1988-07-27 |
Family
ID=10578993
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP86303312A Expired EP0201283B1 (en) | 1985-05-10 | 1986-05-01 | Dual tool spider for pipes |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0201283B1 (en) |
AT (1) | ATE36031T1 (en) |
DE (1) | DE3660432D1 (en) |
DK (1) | DK169878B1 (en) |
GB (1) | GB8511967D0 (en) |
NO (1) | NO171573C (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2517107C1 (en) * | 2013-02-22 | 2014-05-27 | Закрытое акционерное общество "Научно-производственное предприятие "СибБурМаш" | Dual string spider |
RU2532118C1 (en) * | 2013-08-15 | 2014-10-27 | Николай Митрофанович Панин | Swivel wrench |
CN105422024A (en) * | 2015-12-10 | 2016-03-23 | 重庆探矿机械厂 | Hydraulic multifunctional drilling machine and drilling machine clamping device thereof |
CN107013171A (en) * | 2017-05-22 | 2017-08-04 | 大连理工大学 | A kind of new iron driller caliper clamping slips |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3571865A (en) * | 1969-10-06 | 1971-03-23 | Byron Jackson Inc | Power drill pipe and drill collar spider |
US3961399A (en) * | 1975-02-18 | 1976-06-08 | Varco International, Inc. | Power slip unit |
US4373584A (en) * | 1979-05-07 | 1983-02-15 | Baker International Corporation | Single trip tubing hanger assembly |
-
1985
- 1985-05-10 GB GB858511967A patent/GB8511967D0/en active Pending
-
1986
- 1986-05-01 AT AT86303312T patent/ATE36031T1/en not_active IP Right Cessation
- 1986-05-01 DE DE8686303312T patent/DE3660432D1/en not_active Expired
- 1986-05-01 EP EP86303312A patent/EP0201283B1/en not_active Expired
- 1986-05-06 DK DK209086A patent/DK169878B1/en active
- 1986-05-09 NO NO861854A patent/NO171573C/en unknown
Also Published As
Publication number | Publication date |
---|---|
DE3660432D1 (en) | 1988-09-01 |
NO171573B (en) | 1992-12-21 |
EP0201283A1 (en) | 1986-11-12 |
NO861854L (en) | 1986-11-11 |
NO171573C (en) | 1993-03-31 |
DK169878B1 (en) | 1995-03-20 |
DK209086D0 (en) | 1986-05-06 |
GB8511967D0 (en) | 1985-06-19 |
DK209086A (en) | 1986-11-11 |
ATE36031T1 (en) | 1988-08-15 |
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