CN201100109Y - Return and complementary connector for self sealing card tile bushing - Google Patents
Return and complementary connector for self sealing card tile bushing Download PDFInfo
- Publication number
- CN201100109Y CN201100109Y CNU2007201734671U CN200720173467U CN201100109Y CN 201100109 Y CN201100109 Y CN 201100109Y CN U2007201734671 U CNU2007201734671 U CN U2007201734671U CN 200720173467 U CN200720173467 U CN 200720173467U CN 201100109 Y CN201100109 Y CN 201100109Y
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- Prior art keywords
- self
- sealing
- slip
- barrel
- casing pipe
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- Expired - Fee Related
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- 238000007789 sealing Methods 0.000 title claims abstract description 29
- 230000000295 complement effect Effects 0.000 title 1
- 238000012856 packing Methods 0.000 claims abstract description 24
- 241000251468 Actinopterygii Species 0.000 claims abstract description 14
- 230000000694 effects Effects 0.000 abstract description 3
- 238000004873 anchoring Methods 0.000 abstract 2
- 230000008901 benefit Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
The utility model relates to a self-sealing slip type casing pipe tie-back casing patching device which is applied in well repairing, casing pipe taking and casing pipe replacing operations in oil and gas fields. The self-sealing slip type casing pipe tie-back casing patching device is characterized in that an upper barrel is connected with a lower barrel through a connecting screw. A limiting shoulder is arranged on the inner wall of the upper barrel. A sealing plate root group is arranged on the lower end portion of the upper barrel and in the lower barrel. A barrel inner conical surface is arranged on the inner wall of the lower barrel. An anchoring slip is arranged on the inner conical surface of the barrel. An axial strip-shaped gap is arranged on the wall of the anchoring slip. The lower end of the lower barrel is connected with a guide shoe through screw thread. The self-sealing slip type casing pipe tie-back casing patching device has the effects that fish top casing pipe column fixing can be smoothly finished, the casing pipe column is lifted upwards to form effective sealing by the sealing plate root group, a plurality groups of packing rings are utilized to seal tie-back casing pipes effectively, and the performance technical indexes of an original well casing pipe can be recovered.
Description
Technical field
The utility model relates to a kind of oil gas field well workover technology field, and particularly the special tool of buing or get by illegal means operation is got in well workover, specifically is a kind of self-sealing slip-type casing tube tieback rejoining device,
Background technology
Multiple reason causes down-hole casing to damage, as chemical attack, stratum extruding or mechanical wear etc.For improving oil well output and recovery ratio, the reparation of casing failure well is extremely necessary.The oil gas well that most of sleeve pipe damages need be got and buy or get by illegal means the cover operation.Enforcement need be carried out the casing string tieback after getting the cover operation, to guarantee the sealing of pit shaft passage and casing string.Conventional traditional sleeve rejoining device is to adopt the lead sealing rejoining device, and difficult sealing is numerous and diverse with control, construction; Can not adopt the make-up tieback for down-hole top of fish more complicated well and the darker well of damaged location.Make to get and buy or get by illegal means the operation scope and be restricted, bring a lot of difficulties to well workover.It is the easiest economical and practical instrument that the method that adopts self-sealing sleeve pipe rejoining device benefit to connect realizes changing the cover tieback.
The utility model content
The purpose of this utility model is: provide a kind of and be used for the oil field well workover and get and buy or get by illegal means the self-styled slip-type casing tube tieback rejoining device that the cover process is used, finish the casing string tieback, to guarantee the sealing of pit shaft passage and casing string, overcome conventional traditional sleeve rejoining device difficult sealing with control, the numerous and diverse deficiency of construction.
The utility model is achieved in that self-sealing slip-type casing tube tieback rejoining device mainly is made up of upper shell, grappling slips, sealed packing and lower shell.There is connecting thread the upper shell upper end, connects the top tubing string during construction.It is characterized in that: upper shell connects lower shell by thread.Spacing shoulder is arranged on the upper shell inwall.In the bottom of upper shell, and the sealed packing group is arranged in lower shell.The sealed packing group can realize effectively with tieback after casing string pressure bearing and seal function.The sealed packing group is fixed by the sealed packing support ring.At the lower shell inwall cylindrical shell inner conical surface is arranged.The grappling slips is arranged on the cylindrical shell inner conical surface.The grappling slips is cylindric, and grappling slips inwall has slip insert upwards.On the grappling slips wall bar shaped gap is arranged, the effect of bar shaped gap be when the grappling slips along the cylindrical shell inner conical surface during to lower slider, the internal diameter of grappling slips can dwindle.The grappling slips can be fixed the sleeve pipe top of fish, can bear bigger lifting force and realize grappling sleeve pipe top of fish function.The lower end of lower shell is by the guide shoe that has been threaded.
To seal in order making between upper shell and the lower shell, between upper shell and lower shell, sealing ring to be arranged.
Operating principle: the down-hole more complicated can not back-off and the darker well of damaged location, gets when buing or get by illegal means operation implementing oil well, and the method that adopts self-sealing sleeve pipe rejoining device benefit to connect realizes changing cover.At first repair top of fish before benefit connects, remove the burr of top of fish, rejoining device is connected new casing bottom, incorporate in the well; When near top of fish, and meanwhile slowly the rotation transfer instrument, down-hole casing enters the grappling slips by guide shoe.The grappling slips is up to be passed through the sleeve pipe top of fish by distending, and sleeve pipe continues up promotion sealed packing group, arrives locating shoulder, sealed packing group open seals.Upper lifting pipe post then, the slip insert of grappling slips is caught down-hole casing, and the cylindrical shell inner conical surface of up grappling slips of lower shell and lower shell is fitted.Upper lifting pipe post, grappling slips give down-hole casing with coupling mechanism force radially, sealed packing group Sealed casing pipe external diameter simultaneously, thereby packing the interior or exterior space of sleeve pipe, realize that sleeve pipe is mended to connect.
Effect of the present utility model is: self-styled slip-type casing tube tieback rejoining device, can finish fixedly top of fish casing string smoothly; On carry casing string that the sealed packing group is formed be efficient sealed, utilize the sleeve pipes of the efficient sealed tieback of many group joint rings, have fixation, sealing is reliable, mend and guaranteed not external leakage of pit shaft passage after connecing.Tieback by this instrument is mended and is connect, and can recover and former casing performance technologies index, has avoided traditional tieback to mend the defective of bonding tool poor sealing performance, and the lifting force deficiency causes the hidden danger of complicated accident due to wound.The tieback benefit that can satisfy type wells such as down-hole top of fish more complicated well connects job requirements.Adopt grappling slips fixedly tie-back casing and the interior parts casing pipe down of well, the hole diameter no change; The construction technology tube just, each top technical indicator can reach or near new casing.
Description of drawings
Fig. 1 is the generalized section of the application's self-sealing slip-type casing tube tieback rejoining device.
Fig. 2 is a grappling slips schematic diagram.
Among the figure, 1. connecting thread, 2. locating shoulder, 3. upper shell, 4. sealing ring, 5. cylindrical shell thread, 6. sealed packing group, 7. sealed packing support ring, 8. grappling slips,, 10. cylindrical shell inner conical surface, 11. guide shoes.
The specific embodiment
Embodiment 1: consult accompanying drawing 1.The self-sealing slip-type casing tube tieback rejoining device that uses with 139.7 millimeters sleeve pipes illustrates as example: be made up of upper shell 3, grappling slips 8, sealed packing 6 and lower shell 9.Self-sealing slip-type casing tube tieback rejoining device length overall is 1112 millimeters.
There is connecting thread 1 upper shell 3 upper ends.Upper shell 3 connects lower shell 9 by thread 5, between upper shell 3 and lower shell 9 sealing ring 4 is arranged.Lower shell 9 external diameter 187mm.Spacing shoulder 2 is arranged on upper shell 3 inwalls.In the bottom of upper shell 3, and sealed packing group 6 is arranged in lower shell 9.Sealed packing group 6 length are 200 millimeters.Sealed packing group 6 is pressed mutually for many groups are shaped as the embedding of V font phase, and internal diameter cooperates with the top of fish sleeve pipe with the interference size.Sealed packing group 6 is fixing by sealed packing support ring 7.At lower shell 9 inwalls cylindrical shell inner conical surface 10 is arranged.The gradient of cylindrical shell inner conical surface 10 is between 1-8 °, and present embodiment is 1.5 °.Grappling slips 8 is arranged on the cylindrical shell inner conical surface 10.Consult Fig. 2.Grappling slips 8 is cylindric, and grappling slips 8 inwalls have slip insert upwards.Axial bar shaped gap is arranged on grappling slips 8 walls.Axial bar shaped gap on grappling slips 8 walls evenly distributes.Have to disappear at the gap afterbody and answer circular hole, the length of gap is to grab to drag for 75% of slips 8 length, and promptly not connected is axially grooved, will grab to drag for slips 8 and be divided into many lobes, to increase tension force and elasticity.The function of vertical bar gap is to be used to open and to lock the top of fish sleeve pipe.Consult Fig. 1.The lower end of lower shell 9 is by the guide shoe 11 that has been threaded.Guide shoe 11 internal diameter 160mm are used to lead and set upright the top of fish sleeve pipe, and guide shoe 11 and lower shell 9 are integral production.
Claims (5)
1, a kind of self-sealing slip-type casing tube tieback rejoining device, mainly by upper shell (3), grappling slips (8), sealed packing (6) and lower shell (9) are formed, there is connecting thread (1) upper shell (3) upper end, it is characterized in that: upper shell (3) connects lower shell (9) by thread (5), on upper shell (3) inwall spacing shoulder (2) is arranged, bottom in upper shell (3), and sealed packing group (6) arranged in lower shell (9), sealed packing group (6) is fixing by sealed packing support ring (7), at lower shell (9) inwall cylindrical shell inner conical surface (10) is arranged, grappling slips (8) is arranged on the cylindrical shell inner conical surface (10), grappling slips (8) is cylindric, grappling slips (8) inwall has slip insert upwards, on grappling slips (8) wall axial bar shaped gap is arranged, and the lower end of lower shell (9) is by the guide shoe that has been threaded (11).
2, self-styled slip-type casing tube tieback rejoining device according to claim 1 is characterized in that: between upper shell (3) and lower shell (9) sealing ring (4) is arranged.
3, self-sealing slip-type casing tube tieback rejoining device according to claim 1 and 2, it is characterized in that: the axial bar shaped gap on grappling slips (8) wall evenly distributes.
4, self-sealing slip-type casing tube tieback rejoining device according to claim 1 and 2 is characterized in that: described sealed packing group (6) is pressed mutually for many groups are shaped as the embedding of V font phase, and internal diameter cooperates with the top of fish sleeve pipe with the interference size.
5, self-sealing slip-type casing tube tieback rejoining device according to claim 1 and 2, it is characterized in that: the gradient of described cylindrical shell inner conical surface (10) is between 1-8 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201734671U CN201100109Y (en) | 2007-09-29 | 2007-09-29 | Return and complementary connector for self sealing card tile bushing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201734671U CN201100109Y (en) | 2007-09-29 | 2007-09-29 | Return and complementary connector for self sealing card tile bushing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201100109Y true CN201100109Y (en) | 2008-08-13 |
Family
ID=39936641
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201734671U Expired - Fee Related CN201100109Y (en) | 2007-09-29 | 2007-09-29 | Return and complementary connector for self sealing card tile bushing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201100109Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103628836A (en) * | 2013-11-07 | 2014-03-12 | 江苏君鑫谊石油机械有限公司 | Multifunctional casing coupling repairing and connecting device |
| CN103643914A (en) * | 2013-11-08 | 2014-03-19 | 江苏君鑫谊石油机械有限公司 | Multifunctional bushing self-sealing repair and connection device |
| CN107152584A (en) * | 2017-05-03 | 2017-09-12 | 四川鼎胜能源设备科技有限公司 | High pressure underground gas well underground method for repairing leakage |
| CN110080713A (en) * | 2018-01-25 | 2019-08-02 | 中国石油化工股份有限公司 | A kind of multi-functional insertion packer |
| CN111894504A (en) * | 2020-07-30 | 2020-11-06 | 合力（天津）能源科技股份有限公司 | Hydraulic sealing patch connector suitable for casing and oil pipe |
| CN112049592A (en) * | 2020-10-20 | 2020-12-08 | 中国石油集团渤海钻探工程有限公司 | Returnable slip type casing tieback make-up connector |
-
2007
- 2007-09-29 CN CNU2007201734671U patent/CN201100109Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103628836A (en) * | 2013-11-07 | 2014-03-12 | 江苏君鑫谊石油机械有限公司 | Multifunctional casing coupling repairing and connecting device |
| CN103643914A (en) * | 2013-11-08 | 2014-03-19 | 江苏君鑫谊石油机械有限公司 | Multifunctional bushing self-sealing repair and connection device |
| CN107152584A (en) * | 2017-05-03 | 2017-09-12 | 四川鼎胜能源设备科技有限公司 | High pressure underground gas well underground method for repairing leakage |
| CN107152584B (en) * | 2017-05-03 | 2019-02-26 | 四川鼎胜能源设备科技有限公司 | High pressure underground gas well underground method for repairing leakage |
| CN110080713A (en) * | 2018-01-25 | 2019-08-02 | 中国石油化工股份有限公司 | A kind of multi-functional insertion packer |
| CN110080713B (en) * | 2018-01-25 | 2023-07-04 | 中国石油化工股份有限公司 | Multifunctional insertion packer |
| CN111894504A (en) * | 2020-07-30 | 2020-11-06 | 合力（天津）能源科技股份有限公司 | Hydraulic sealing patch connector suitable for casing and oil pipe |
| CN112049592A (en) * | 2020-10-20 | 2020-12-08 | 中国石油集团渤海钻探工程有限公司 | Returnable slip type casing tieback make-up connector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080813 Termination date: 20091029 |