CN101435523B - Bias-wearing-proof method of filling oil conduit seam and oil conduit seam bushing ring - Google Patents
Bias-wearing-proof method of filling oil conduit seam and oil conduit seam bushing ring Download PDFInfo
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- CN101435523B CN101435523B CN2008102378550A CN200810237855A CN101435523B CN 101435523 B CN101435523 B CN 101435523B CN 2008102378550 A CN2008102378550 A CN 2008102378550A CN 200810237855 A CN200810237855 A CN 200810237855A CN 101435523 B CN101435523 B CN 101435523B
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- oil pipe
- oil
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- oil conduit
- filling
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Abstract
The invention discloses a method for preventing eccentric worn in filling an oil pipe seam used in petroleum industry and an oil pipe seam lined ring thereof to be used in an oil pipe seam of a producing well with a sucker-rod pump to reduce worn between a sucker rod coupling and the oil pipe. The method for preventing eccentric worn in filling the oil pipe seam is to add a filling member which can freely rotate in the oil pipe seam on the joint of a buried oil pipe to reduce a clearance of the oil pipe. The oil pipe seam liner ring is a fill-in member, the inner circles of the two ends of the cylinder are provided with chamfer angles, its height is less than that of the oil pipe seam. The liner ring is installed at the seam of two oil pipes. In the invention, the liner ring is arranged on the joint of two oil pipes to greatly reduce the clearance of the oil pipes, thereby avoiding worn between an oil pipe column and a sucker rod column. The method can ensure that the sucker rod smoothly passes through upper and lower strokes so as to avoid collision between the sucker rod coupling and oil pipes, thereby protecting both an oil pipe screw thread and the sucker rod coupling, greatly reducing eccentric worn failure, prolonging production cycle of the oil well, and improving service life of the sucker rod column and the oil pipe column.
Description
Technical field
The present invention relates to method and device that petroleum industry prevents producing well bar, pipe wearing and tearing, particularly filling oil conduit seam is prevented the method and the oil conduit seam bushing ring thereof of eccentric wear, filling grommet in the oil conduit seam of sucker rod pumping well reduces the wearing and tearing of rod collar and oil pipe.
Background technology
The oil field enters the high water-cut development stage at present, and great changes have taken place for pit shaft situation and output fluidity matter, and sucker rod pump system works environment progressively worsens, and has aggravated the rod and tube partial-wear degree, and rod parting, oil pipe leakage phenomena frequently take place.By the field operation trace analysis of eccentric wear well is found that the oil well eccentric wear has following characteristics: the one, most eccentric wear wells are that pipe wire buckle eccentric wear sign is the most obvious, following the tracks of the well statistics according to the scene has 86% oil well oil conduit screw thread worn out; The 2nd, the most concentrated position of eccentric wear well sucker rod partial wear sign is a rod collar, has only the only a few sucker rod the serious phenomenon of body eccentric wear to occur.
Anti-eccentric wear technology in usefulness mainly contains technology such as wear-resistant pair, oil pumping rod centering device, wear-resistant pipe bar at present, the cycle that wear-resistant pair and oil pumping rod centering device prolong is short, increase polished rod load, increased and crossed flow resistance, still had wear-resistant secondary box cupling and rod collar eccentric wear phenomenon after the use; Wear-resistant pipe bar costs an arm and a leg, and has influenced it and has promoted the use of on a large scale.
Conventional rod string is with rod collar each root sucker rod to be coupled together, the diameter of rod collar is thicker than sucker rod, box cupling and oil pipe were in contact with one another and cause wearing and tearing when sucker rod moved back and forth in oil pipe, and especially box cupling moves back and forth through two oil conduit seam places.Because oil pipe is to rely on Taper Pipe to buckle to connect and realizes sealing, connecting thread has certain tight distance, so when the oil pipe body is connected with tubing coupling, oil pipe body end face can not contact, but have certain clearance, according to actual measurement, greatly about not waiting about 17-25mm.When being subjected to the influencing of lateral force, rod collar and oil pipe body end face produce staggered collision, at sucker rod up and down under the effect of radial pull, and the wearing and tearing of aggravation rod collar and screwed connection place of oil pipe end face.Find that from on-the-spot eccentric wear well the screwed connection position of oil pipe is mostly serious than oil pipe body wear.Simultaneously, the existence of oil conduit seam also makes the wearing and tearing aggravation of supporting deflection abrasion preventing centralizer, the application life of having reduced anti-eccentric wear device.
Summary of the invention
The method and the oil conduit seam bushing ring thereof that the purpose of this invention is to provide the anti-eccentric wear of filling oil conduit seam; dwindle oil conduit seam, overcome rod collar when moving back and forth, the staggered collision that produces at oil pipe joint gap place; reduce bar, pipe wearing and tearing, protection rod collar and oil pipe screw thread.
The technical solution adopted for the present invention to solve the technical problems is:
The method of the anti-eccentric wear of filling oil conduit seam is to add filling member in the oil conduit seam of down-hole oil tube junction, dwindles the oil pipe gap, and filling member can freely rotate in oil conduit seam.
Oil conduit seam bushing ring is a kind of filling member, and grommet is a cylindrical shell, and circle being provided with chamfering in the two ends, and internal diameter equates with the internal diameter of oil pipe or less than the internal diameter of upper and lower oil pipe, external diameter conforms to the internal diameter of tubing coupling, and it is highly less than oil conduit seam.Grommet is installed in the seam crossing of two oil pipes.
Remarkable result of the present invention is: the junction at two oil pipes adds grommet, has dwindled the oil pipe gap greatly, prevents the wearing and tearing of tubing string and rod string.Rod string is steadily passed through in up-down stroke, avoided the rod collar card to bump oil pipe.Both protect the oil pipe screw thread, protected rod collar again, significantly reduced the eccentric wear well of lying, prolonged the oil well production cycle, the application life of having improved rod string and tubing string.The present invention compares with device with existing anti-eccentric wear instrument, and is simple in structure, with low cost, greatly reduces cost of production.Construction is convenient especially, only needs when being lowered to oil pipe, and the two oil conduit seam places that this grommet put into tubing coupling get final product, and greatly reduce the production and construction cost.
Fig. 1 is the schematic diagram of installing and using of oil conduit seam bushing ring of the present invention.
Fig. 2 is the structural representation of oil conduit seam bushing ring of the present invention.
The present invention is described further below in conjunction with drawings and Examples, and referring to Fig. 1, the method for the anti-eccentric wear of filling oil conduit seam is to add filling member in the oil conduit seam of down-hole oil tube junction, dwindles the oil pipe gap.Filling member can freely rotate in oil conduit seam, and fit clearance is suitable, and the seam crossing formation transition at oil pipe can steadily be passed through rod string.Filling member can be ring-type, the wreath of metal ring or other material.Referring to Fig. 2, grommet 3 is a kind of filling members, and grommet 3 is cylindrical shells, and circle is provided with chamfering in its cylindrical shell two ends, is convenient to rod collar and passes through smoothly.The internal diameter of grommet 3 equates with the internal diameter of last oil pipe 1 and following oil pipe 4 or is littler 0.5 millimeter-1.5 millimeters than the internal diameter of last oil pipe 1 and following oil pipe 4, preferably smaller than the internal diameter of last oil pipe 1 and following oil pipe 4.The internal diameter of grommet 3 is slightly less than the internal diameter of oil pipe 1 and following oil pipe 4, and when rod collar was back and forth passed through, oil pipe 1 and following oil pipe 4 were not worn in the protection, as long as regularly replace grommet 3, prolongs the application life of oil pipe tubing string.The external diameter of grommet 3 conforms to the internal diameter of tubing coupling 2 or smaller 0.5 millimeter-1 millimeter, as long as can put into tubing coupling 2.The little 4-6 millimeter of the aspect ratio oil conduit seam of grommet 3.Above oil pipe 1 of the height of grommet 3 and following oil pipe 4 are tightened the back and are advisable with the gap minimum of two oil pipe end faces.
[0013] in the construction that is lowered to tubing string, be with an end of tubing couplings 2 to put in oil pipe 1 on another root of screwing on again from following oil pipe 4 grommet 3.The junction of oil pipe 1 and following oil pipe 4 just forms a transition on two like this, and rod collar just can avoid card to run into oil pipe 1 and following oil pipe 4 therefrom through out-of-date, has both protected the screw thread of last oil pipe 1 and following oil pipe 4, has protected rod collar again.
Claims (4)
1. the method for the anti-eccentric wear of filling oil conduit seam is to add filling member in the oil conduit seam of down-hole oil tube junction, dwindles the oil pipe gap, and filling member can freely rotate in oil conduit seam.
2. one kind is used for the oil conduit seam bushing ring that claim 1 filling oil conduit seam is prevented the eccentric wear method, filling member comprises grommet (3), grommet (3) is a cylindrical shell, circle is provided with chamfering in the two ends, its internal diameter is equal to or less than the internal diameter of oil pipe (1) and following oil pipe (4), its external diameter conforms to the internal diameter of tubing coupling (2), and the height that it is characterized in that grommet (3) is less than oil conduit seam.
3. the oil conduit seam bushing ring of the anti-eccentric wear method of filling oil conduit seam according to claim 2 is characterized in that the internal diameter of grommet (3) is littler 0.5 millimeter-1.5 millimeters than the internal diameter of last oil pipe (1) and following oil pipe (4).
4. filling oil conduit seam according to claim 2 is prevented the oil conduit seam bushing ring of eccentric wear method, it is characterized in that the little 4-6 millimeter of aspect ratio oil conduit seam of grommet (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102378550A CN101435523B (en) | 2008-12-05 | 2008-12-05 | Bias-wearing-proof method of filling oil conduit seam and oil conduit seam bushing ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008102378550A CN101435523B (en) | 2008-12-05 | 2008-12-05 | Bias-wearing-proof method of filling oil conduit seam and oil conduit seam bushing ring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101435523A CN101435523A (en) | 2009-05-20 |
| CN101435523B true CN101435523B (en) | 2011-04-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008102378550A Expired - Fee Related CN101435523B (en) | 2008-12-05 | 2008-12-05 | Bias-wearing-proof method of filling oil conduit seam and oil conduit seam bushing ring |
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| CN (1) | CN101435523B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113323594B (en) * | 2021-05-27 | 2024-05-28 | 中煤科工集团沈阳研究院有限公司 | Drill rod with ultrahigh-pressure axial sealing structure |
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- 2008-12-05 CN CN2008102378550A patent/CN101435523B/en not_active Expired - Fee Related
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| CN101435523A (en) | 2009-05-20 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110427 Termination date: 20111205 |