CN2464926Y - Lead seal cement pouring sleeve joint - Google Patents
Lead seal cement pouring sleeve joint Download PDFInfo
- Publication number
- CN2464926Y CN2464926Y CN 00212072 CN00212072U CN2464926Y CN 2464926 Y CN2464926 Y CN 2464926Y CN 00212072 CN00212072 CN 00212072 CN 00212072 U CN00212072 U CN 00212072U CN 2464926 Y CN2464926 Y CN 2464926Y
- Authority
- CN
- China
- Prior art keywords
- slip spider
- lead sealing
- slip
- guide shoe
- sleeve
- 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 lead seal cement pouring sleeve joint which is used for workover in oil fields. The utility model is composed of a tubular upper contact, an outer tube and a guide shoe which are orderly connected into a whole body by screws, wherein, a sleeve-shaped slip seat is connected in the outer tube in a sliding mode; the outside of the slip seat is provided with a longitudinal groove, and the interior surface is provided with sawtooth threads and lined with a cylindrical flat spring helical slip; the outer surface of the spiral slip corresponding to the inner surface of the slip seat is provided with sawtooth threads, and the inner surface is provided with multiple threads; a lead seal sleeve assembly which can be squeezed to expand and an internal sleeve are orderly connected between the slip seat and the guide shoe. The utility model has the advantages of good workover effect and long service life.
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---lead sealing cmtd csg 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) of G.I.H 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 the lead sealing cmtd csg rejoining device of warp in the sleeve pipe.
Technical solution of the present utility model is: lead sealing cmtd csg rejoining device is by adopting tubulose top connection, urceolus and the guide shoe that is threaded to one in turn, in urceolus, slip the shell-like slip spider is arranged, there is longitudinal groove the slip spider outside, there is big saw-tooth thread on inner surface, and lining connects cylindrical flat spring spiral slips, the corresponding slip spider inner surface of spiral slips external surface is big saw-tooth thread, and inner surface has multiple thread; Can be squeezed lead sealing cover assembly and the interior cover that expands along being connected between slip spider and the guide shoe.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 and be inserted on the connected sleeve pipe in down-hole, make connected sleeve pipe be embraced clamping by the spiral slips, lead sealing is extruded distortion, seals the sealing of sleeve pipe and slip spider lower end.Move when withstanding joint on the slip spider, interior cover leaves the end face lead sealing, open the passage between slip spider and the urceolus, then the cement of Zhu Ruing is through the vertical groove of slip spider external surface slit between interior cover and guide shoe, and gone between the urceolus and the borehole wall from the guide shoe internal return between sleeve pipe of inserting and the guide shoe, until filling with, reach cement solidification sleeve pipe and borehole wall effect.Top connection also is connected to new casing, and this sample rejoining device is connected between the new and old sleeve pipe up and down, reaches and repairs the purpose of damaged location herein.
The utility model has the advantages that: be to be plugged in this rejoining device 1,, achieve a butt joint, mend and do not dwindle borehole size after connecing, can not produce and stop other repair outfit with new and old sleeve pipe up and down by the sleeve pipe repaired.2, adopt lead sealing to replace traditional rubber seal, can adapt to the down-hole adverse circumstances, acidproof alkali salt, sealing life is long.3, adopt " pipe box " formula to connect and repair damaged position, replaced local in the past bushing pipe repair technology, the connecting portion crushing resistance is strengthened, attachment security is reliable.4, cover forms the cementing passage in the guide shoe front end adds, and has guaranteed sleeve pipe and borehole wall firm engagement.
Below in conjunction with accompanying drawing the utility model is described in further detail:
Fig. 1 is the utility model structure diagram.
Fig. 2 is a status architecture sketch before lead sealing cover assembly is not pressed.
Fig. 3 is a lead sealing cover assembly compression back status architecture sketch.
Referring to Fig. 1, lead sealing cmtd csg rejoining device is by adopting top connection 1, urceolus 2 and the guide shoe 3 that is threaded to one in turn.Slipping in the urceolus 2 has shell-like slip spider 4, and slip spider 4 external surfaces have 12 longitudinal grooves, and inner surface has the big saw-tooth thread 12 of dextrorotation, and it slips in urceolus 2 and is limited by pin 5, and it can only be slided up and down can not rotate.Lining connects spiral slips 6 on slip spider 4, its shape such as special dextrorotation cylinder flat spring, external surface also is big zigzag right-handed thread (with slip spider 4 stubborn connecing), inner surface has the bull right-handed thread, spiral slips 6 has certain string quantity of motion vertically in slip spider 4, but can not relatively rotate, and the internal diameter of spiral slips 6 is slightly less than the external diameter that is inserted into sleeve pipe under the free state, be subjected to external force and make the time spent diameter and can increase or reduce, can return to original size by elasticity during the external force cancellation.
Referring to Fig. 2, lead sealing cover assembly is located at slip spider 4 lower ends, is made up of lead cover 8, the center ring 9 at its middle part and the not end seal ring 10 at its two ends.Cover 11 in the termination under the lead sealing cover assembly.
Referring to Fig. 3, after lead sealing cover assembly was compressed, crimp took place and is enclosed on urceolus 2 inner surfaces in 8 in plumbous cover.
Operating principle: when well inner sleeve somewhere occurs damaged, then at breakage that sleeve pipe is sawed-off and the above sleeve pipe of breakage taken out.This rejoining device (back connects new casing) is sent into interior its front end sleeve of well on sleeve pipe to be connected, when sleeve pipe inserts contact spiral slips 6 from guide shoe 3 ends after, with spiral slips 6 jack-up upwards, form certain clearance between the inner conical surface of the male cone (strobilus masculinus) of spiral slips 6 and slip spider 4, spiral slips 6 external diameters are expanded, when instrument is transferred in left-hand rotation, under the effect by the friction torque between spiral slips 6 and the cover external diameter of pipe, spiral slips 6 internal diameters enlarge, sleeve pipe is passed through smoothly, until withstanding top connection 1.On carry this rejoining device (rejoining device is motionless, its inner moving), the spiral slips 6 external spiral conical surfaces and the slip spider 4 inside spin conical surfaces are fitted mutually, produce radially clamping force, when clamping force surpassed certain limit, the crown on spiral slips 6 inner surfaces embedded tube wall sleeve pipe is bitten, and finishes clamping connection.Carry this rejoining device in the continuation, because spiral slips 6 is stung tight sleeve pipe, slip spider 4 can not be up with urceolus 2, so guide shoe 3 is given upwards thrust of interior cover 11 under urceolus 2 tension, make lead sealing cover assembly be subjected to axial compression and produce flow shape, play sealing function (goodbye Fig. 2, Fig. 3).After finishing above operation, slowly transfer this rejoining device again, make rejoining device be subjected to the pressure of 70-90KN, because of slip spider 4 withstands top connection 1, interior cover 11 leaves the end face lead sealing and opens passage between slip spider 4 and the urceolus 2, from last cementing, then cement is through 12 vertical passages of slip spider 4 external surfaces, flow through passage between slip spider 4 and the urceolus 2 returns this rejoining device external surface between guide shoe 3 inner surfaces and sleeve, up to being full of till ground is returned in the slit between the sleeve and the borehole wall.Shed tensile load after theing cement solidifies, bore the cement in the pipe, reach the well cementation purpose.So, adopt this rejoining device need not take out whole well inner sleeves and just can repair the sleeve pipe that damages in the well quickly.
Claims (2)
1, a kind of lead sealing cmtd csg 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; Slipping in urceolus (2) has shell-like slip spider (4), and there is longitudinal groove slip spider (4) outside, and there is big saw-tooth thread (12) on inner surface, and lining connects cylindrical flat spring spiral slips (6); Corresponding slip spider (4) inner surface of spiral slips (6) external surface is big saw-tooth thread, and inner surface has multiple thread; Can be squeezed lead sealing cover assembly and the interior cover (11) that expands along being connected between slip spider (4) and the guide shoe (3).
2, according to the described lead sealing cmtd csg of claim 1 rejoining device, it is characterized in that described lead sealing cover assembly is one section plumbous cover (8), plumbous cover (8) middle part has the terminal seal ring (10) at a center seal ring (9) and plumbous cover (8) two ends to form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00212072 CN2464926Y (en) | 2000-05-30 | 2000-05-30 | Lead seal cement pouring sleeve joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00212072 CN2464926Y (en) | 2000-05-30 | 2000-05-30 | Lead seal cement pouring sleeve joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2464926Y true CN2464926Y (en) | 2001-12-12 |
Family
ID=33578653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00212072 Expired - Fee Related CN2464926Y (en) | 2000-05-30 | 2000-05-30 | Lead seal cement pouring sleeve joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2464926Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN114718501A (en) * | 2022-03-31 | 2022-07-08 | 中海油能源发展股份有限公司 | Quick casing tie-back sealing device and operation method thereof |
-
2000
- 2000-05-30 CN CN 00212072 patent/CN2464926Y/en not_active Expired - Fee Related
Cited By (5)
| 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 |
| 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 |
| CN114718501A (en) * | 2022-03-31 | 2022-07-08 | 中海油能源发展股份有限公司 | Quick casing tie-back sealing device and operation method thereof |
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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 |