CN2451717Y - Packer type casing pipe rejoining device - Google Patents
Packer type casing pipe rejoining device Download PDFInfo
- Publication number
- CN2451717Y CN2451717Y CN 00212071 CN00212071U CN2451717Y CN 2451717 Y CN2451717 Y CN 2451717Y CN 00212071 CN00212071 CN 00212071 CN 00212071 U CN00212071 U CN 00212071U CN 2451717 Y CN2451717 Y CN 2451717Y
- Authority
- CN
- China
- Prior art keywords
- sleeve pipe
- packer type
- basket
- utility
- rejoining device
- 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 - Fee Related
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Abstract
The utility model discloses a packer type casing rejoining device for workover in oil fields. The utility model is composed of a tubular upper joint, an outer cylinder and a guide shoe which are orderly connected into a whole body by screws, wherein, the inner surface of the outer cylinder is lined with a double lip thimble-shaped sealing ring and a sawtooth thread with coarse pitch, and the inner surface of the sawtooth thread is screwed with a basket slip; the inner surface of the slip is provided with notched teeth. The utility model has the characteristics of firm hold, reliable seal and no grouting.
Description
The utility model relates to a kind of oilfield workover tool, refers to be used to take out the new and old sleeve pipe that damages when being lowered to new casing again behind the sleeve pipe down-hole especially and connects instrument---packer type sleeve pipe rejoining device.
The tube wall breakage often takes place because of the downhole corrosion environment in the oil well inner sleeve.The method of repairing in the prior art is to adopt special equipment to serve as a contrast on casing damage place inwall to paste the new bushing pipe of the preceding paragraph, its shortcoming is to need the import special equipment, complicated operation, the rehabilitation cost height, and make in the breakage sleeve pipe through diminishing, other instrument (as packer, fishing tool) in servant's well is hampered, and exists the sealing part compressive property poor, it is low application life that benefit meets the place.
The utility model purpose is to provide a kind of raising to mend to connect intensity at above-mentioned deficiency, does not influence casing inner diameter, packer type sleeve pipe rejoining device simple in structure.
Technical solution of the present utility model is: packer type sleeve pipe rejoining device is by adopting tubulose top connection, urceolus and the guide shoe that is threaded to one in turn.Outer tube inner surface is arranged the wide saw-tooth thread on sealing ring and the inner surface in turn, twists on wide saw-tooth thread and is lined with the basket slips of shell-like, and outer hard interior tough notched teeth is arranged on the basket slips inner surface.When a part sleeve pipe in the well damages, then adopt special tool that the above sleeve pipe of breakage is all taken out, send into this rejoining device.Be inserted on the connected sleeve pipe in down-hole, connected sleeve pipe embraced by basket slips, and sealed by sealing ring.After the connection, this rejoining device lower end is connected with the sleeve pipe of down-hole, and the upper end is connected with the new casing of the company for the treatment of by top connection, and then this rejoining device is connected between the new and old sleeve pipe in down-hole, has replaced damaged location.
The advantage of this rejoining device is: 1 is to be plugged in this rejoining device by the sleeve pipe studied for a second time courses one has flunked, achieves a butt joint with new and old sleeve pipe up and down, mends and does not dwindle borehole size after connecing, and can not produce other repair outfit and stop.2, adopt " sleeve pipe " formula to connect and repair damaged position, replaced local in the past bushing pipe repair technology, make the connecting portion crushing resistance strong, attachment security is reliable.3, adopt basket slips structure, simple in structure, to grab and drag for firmly, sealing is reliable.4, be used for cement-free and return high well section and effective rapidly.
Below in conjunction with accompanying drawing the utility model is described in further detail:
Fig. 1 is the utility model structure diagram.
Referring to Fig. 1, packer type sleeve pipe rejoining device is by adopting the tubulose top connection 1, urceolus 2 and the guide shoe 3 that are threaded to one to form in turn.Stud with lips formula sleeve shaped sealing ring 4 in the urceolus 2, on be pressed with protective sleeve 5, when sealing ring 4 was not worked, the protected cover 5 of lips was being pressed.Have wide saw-tooth thread 6 on urceolus 2 inwalls, promptly the left-handed saw-tooth thread of coarse pitch is a spiral inner conical surface that pitch is very wide.Basket slips 7 external surfaces of shell-like have width profile of tooth external screw thread, and each spiral shell rectangle becomes an external spiral conical surface equally, and inner surface is useful on embraces the outer hard interior tough notched teeth that blocks sleeve.Basket slips 7 is twisted lining on urceolus 2 inwalls.Can be in cylindrical shell upper and lower play, to realize unclamping, biting the insertion sleeve.Be equipped with below the basket slips 7 and mill control ring 8, its lower surface is sharp keen mill teeth, with the foreign material on the milling insertion sleeve.The urceolus 2 lower ends guide shoe 3 of ining succession is to facilitate the introduction of sleeve." basket " of basket slips 7 is meant the basket of a no end, and actual is exactly a cover.
Operating principle: be connected new casing this rejoining device bottom the time near down-hole casing; slowly rotation on one side; transfer instrument on one side; down-hole casing enters basket slips 7 by guide shoe; basket slips 7 before this by on push away; passed through by sleeve pipe by distending then; sleeve pipe continues the up protective sleeve of pushing open on the lips formula sleeve shaped sealing ring 45 by basket slips 7 backs; sealing ring 4 opens lips, and sleeve pipe withstands top connection 1, finishes to grab and drags for back upper lifting pipe post; it is motionless that basket slips 7 is bitten down-hole casing; urceolus 2 is up, and basket slips 7 is fitted with the spiral conical surface in the urceolus 2, on to carry load big more; it is tight more that basket slips 7 is bitten casing; simultaneously lips formula sleeve shaped sealing ring 4 internal diameters are sealed the cover external diameter of pipe, and external diameter is sealed urceolus 2 inwalls, thus packing the sleeve pipe interior or exterior space.As take out this rejoining device, as long as hit ruthlessly down, slowly dextrorotation then, on carry, can withdraw from.Under to hit be to make the basket slips 7 spiral conical surfaces break away from the cylindrical shell inside spin conical surface, dextrorotation is the frictional force of utilizing between basket slips 7 and the sleeve pipe, makes basket slips 7 be in the state of swelling all the time, is convenient to withdraw from down-hole casing.
Claims (3)
1, a kind of packer type sleeve pipe rejoining device is characterized in that it is by adopting tubulose top connection (1), urceolus (2) and the guide shoe (3) that is threaded to one in turn; Urceolus (2) inner surface is arranged the saw-tooth thread (6) on sealing ring (4) and the inner surface in turn; Wide saw-tooth thread (6) is gone up to twist and is lined with the basket slips of shell-like (7), and outer hard interior tough notched teeth is arranged on basket slips (7) inner surface.
2,, it is characterized in that sealing ring (4) is lips formula sleeve shaped according to the described packer type sleeve pipe of claim 1 rejoining device.
3, according to claim 1 or 2 described packer type sleeve pipe rejoining devices, it is characterized in that basket slips (7) lower surface also is provided with mills control ring (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00212071 CN2451717Y (en) | 2000-05-30 | 2000-05-30 | Packer type casing pipe rejoining device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00212071 CN2451717Y (en) | 2000-05-30 | 2000-05-30 | Packer type casing pipe rejoining device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2451717Y true CN2451717Y (en) | 2001-10-03 |
Family
ID=33578652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00212071 Expired - Fee Related CN2451717Y (en) | 2000-05-30 | 2000-05-30 | Packer type casing pipe rejoining device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2451717Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103225485A (en) * | 2013-05-06 | 2013-07-31 | 重庆望江工业有限公司 | Releasing type spiral slip overshot |
| CN103628837A (en) * | 2013-11-11 | 2014-03-12 | 江苏君鑫谊石油机械有限公司 | Multifunctional novel patching connector for casing joint |
| 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 |
| 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 |
-
2000
- 2000-05-30 CN CN 00212071 patent/CN2451717Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103225485A (en) * | 2013-05-06 | 2013-07-31 | 重庆望江工业有限公司 | Releasing type spiral slip overshot |
| 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 |
| CN103628837A (en) * | 2013-11-11 | 2014-03-12 | 江苏君鑫谊石油机械有限公司 | Multifunctional novel patching connector for casing joint |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |