CN219509598U - Oil well lifting pipe column - Google Patents
Oil well lifting pipe column Download PDFInfo
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- CN219509598U CN219509598U CN202320562344.6U CN202320562344U CN219509598U CN 219509598 U CN219509598 U CN 219509598U CN 202320562344 U CN202320562344 U CN 202320562344U CN 219509598 U CN219509598 U CN 219509598U
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Abstract
The utility model relates to an oil well lifting pipe column, which comprises an oil pipe column and a sucker rod column; the tubing string comprises a hydraulic anchor connected to the upper end of the under-pump aggravated anticorrosion oil pump cylinder, a lining tubing connected to the upper end of the hydraulic anchor, and a tail pipe, a screen pipe and a plug connected to the lower end of the under-pump aggravated anticorrosion oil pump cylinder; the sucker rod column comprises a sucker rod plunger arranged in a weighted anti-corrosion sucker rod barrel below the pump, a sucker rod safety joint connected to the upper end of the sucker rod plunger, a continuous sucker rod connected to the upper end of the sucker rod safety joint, and a weighted rod connected to the lower end of the sucker rod plunger. In the oil well lifting pipe column, the lining oil pipe, the hydraulic anchor, the under-pump weighting anti-corrosion oil pump cylinder, the tail pipe, the screen pipe and the plug are sequentially connected from top to bottom from the oil well wellhead, so that the problem of creeping of the oil well pipe column in the well is effectively solved. Meanwhile, in the oil well lifting pipe column, a lining oil pipe is further arranged, so that the problem of eccentric wear of a rod pipe is solved.
Description
Technical Field
The utility model relates to an oil well lifting pipe column, and belongs to the field of oil field exploitation.
Background
The lifting pipe column of the sucker rod pump of the oil well is generally formed by connecting a steel sucker rod and a weighting rod on the piston of the sucker rod pump, and in the lifting process, the sucker rod column is easy to break and fall off due to the fact that the sucker rod column is subjected to the combined action of alternating pulling and pressing load and stratum water corrosive medium for a long time. Especially in the oil well that stratum water corrodes seriously, because of corroding and causing the pole to break and take off, the oil well examines pump operation cycle short, causes frequent operation, influences the oil well production effect.
Disclosure of Invention
The utility model aims to provide an oil well lifting pipe column which is used for solving the problem that in the prior art, an oil well sucker rod column is easy to corrode and break under the combined action of alternating pulling and pressing load and stratum water corrosion medium for a long time.
In order to achieve the above object, the present utility model provides a method comprising:
an oil well lifting string comprises a tubing string and a sucker rod string; the tubing string comprises a hydraulic anchor connected to the upper end of the under-pump aggravated anticorrosion oil pump barrel, a lining tubing connected to the upper end of the hydraulic anchor, and a tail pipe, a screen pipe and a plug connected to the lower end of the under-pump aggravated anticorrosion oil pump barrel; the sucker rod plunger comprises a sucker pump plunger arranged in the pump lower weighting anti-corrosion sucker pump barrel, a sucker rod safety joint connected to the upper end of the sucker pump plunger, a continuous sucker rod connected to the upper end of the sucker rod safety joint, and a weighting rod connected to the lower end of the sucker pump plunger.
The utility model has the beneficial effects that: in the oil well lifting pipe column, the lining oil pipe, the hydraulic anchor, the under-pump weighting anti-corrosion oil pump cylinder, the tail pipe, the screen pipe and the plug are sequentially connected from top to bottom from the oil well wellhead, so that the problem of creeping of the oil well pipe column in the well is effectively solved. Meanwhile, in the oil well lifting pipe column, a lining oil pipe is further arranged, so that the problem of eccentric wear of a rod pipe is solved.
Further, the plunger of the oil pump comprises a ball valve inlet and outlet mechanism and a positioning sealing mechanism arranged outside the ball valve inlet and outlet mechanism.
The utility model has the beneficial effects that: the oil pump plunger adopts a two-stage plunger and an auxiliary sealing structure, realizes the inlet and outlet of petroleum through a ball valve inlet and outlet mechanism and a positioning sealing mechanism, and realizes the positioning and sealing functions.
Further, the ball valve inlet and outlet mechanism adopts a two-stage plunger structure, and the upper plunger structure comprises an upper plunger, an upper and lower traveling valve cover, a valve ball valve seat and a diversion connector which are sequentially connected; the lower plunger structure comprises a plunger upper joint, a lower plunger and a plunger lower liquid inlet joint which are sequentially connected and arranged and are used for connecting a valve seat; the positioning sealing mechanism is arranged outside the lower plunger.
Further, the plunger lower liquid inlet connector is provided with a lateral liquid inlet channel, and the lower end of the lateral liquid inlet channel is connected with a weighting rod in a threaded manner, so that the weighting of the lower part of the plunger structure is realized.
The beneficial effects of the utility model are as follows: the plunger lower liquid inlet connector is provided with a lateral liquid inlet channel, the lower end of the plunger lower liquid inlet connector is connected with a weighting rod in a threaded manner, so that the lower part of a lower plunger structure is weighted, the weighting rod can be thickened and does not bear tensile load, and the self corrosion-resistant service life of the steel rod can be prolonged.
Further, the positioning sealing mechanism comprises a positioning lock catch arranged outside the lower plunger and a lock catch sleeve arranged outside the positioning lock catch, the lower end of the positioning lock catch is connected with a sealing core pipe, the lower end of the sealing core pipe is connected with a sealing core pipe lower joint, sealing sleeves are sleeved outside the sealing core pipe and the sealing core pipe lower joint, and a lantern ring and a sealing ring are arranged between the sealing core pipe and the sealing sleeves.
The beneficial effects of the utility model are as follows: the positioning sealing mechanism adopts a lock catch to realize plunger positioning, and adopts a sealing ring to realize the sealing of the oil flow of the movable chamber between the pump cylinder and the plunger.
Further, the sucker rod safety joint and the sucker rod are made of carbon fiber composite materials.
The beneficial effects of the utility model are as follows: by utilizing the advantages of high strength, light weight and corrosion resistance of the carbon fiber composite material, the under-pump aggravated anti-corrosion oil pump is arranged, and the under-pump aggravated anti-corrosion oil pump is matched with the carbon fiber composite material continuous sucker rod, so that the full coverage of the composite material sucker rod column on the pump is realized, the under-pump steel aggravated rod is not subjected to tension and compression load in the up-and-down stroke process, and the self anti-corrosion service life of the steel rod is prolonged.
Drawings
FIG. 1 is a schematic diagram of an oil well lifting string of the present utility model;
FIG. 2 is a cross-sectional view of the upper plunger portion of the ball valve inlet and outlet mechanism of the oil well lifting string of the present utility model;
FIG. 3 is a cross-sectional view of a positioning and sealing mechanism of an oil well lifting string of the present utility model.
Reference numerals illustrate:
1. lining an oil pipe; 2. a hydraulic anchor; 3. under-pump weighting anti-corrosion oil pump cylinder; 4. a tail pipe; 5. a screen pipe; 6. plugging; 7. a continuous sucker rod; 8. a sucker rod safety joint; 9. a pull rod and an oil pump plunger; 10. a weight bar; 11. pump barrel coupling; 12. a thick-walled pump cylinder; 13. a liquid outlet joint is arranged; 14. an upper traveling valve seat joint; 15. a plunger; 16. an upper traveling valve cover; 17. a first valve ball; 18. a first valve seat; 19. a diversion joint; 20. a downstream valve housing; 21. a second valve ball; 22. a second valve seat; 23. a plunger upper joint; 24. a long plunger; 25. a lock catch sleeve; 26. positioning a lock catch; 27. sealing the core tube; 28. a collar; 29. a seal ring; 30. a spacer bush; 31. sealing sleeve; 32. a copper ring; 33. sealing the lower joint of the core tube; 34. a pump cylinder; 35. a plunger lower liquid inlet joint; 36. an oil layer; 37. sucker rod threads.
Detailed Description
The present utility model will be further described in detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent.
Aiming at the oil well with serious corrosion, the utility model adopts the carbon fiber continuous pumping rod under-pump weighting corrosion-proof technology to realize that the carbon rod is adopted on the pump and the steel weighting rod is adopted under the pump, thereby avoiding the pump-checking operation caused by corrosion and fracture of the steel rod, prolonging the pump-checking period of the oil well and realizing the aims of corrosion resistance and life prolonging of the oil well.
The utility model provides an oil well lifting pipe column. The lifting pipe column is mainly used for solving the problems of corrosion, disconnection and short pump detection period of the steel sucker rod caused by high mineralization degree of stratum water in the lifting process of an oil well, and comprises an oil pipe column and a sucker rod column; the tubing string comprises lining tubing, a hydraulic anchor, a pump-down weighting anti-corrosion oil pump cylinder, a tail pipe, a screen pipe and a plug from top to bottom; the sucker rod string comprises a polished rod, a quick connecting joint, a continuous sucker rod, a sucker rod safety joint, a pull rod, an oil pump plunger and a weighting rod from top to bottom. The continuous sucker rod and the sucker rod safety joint are made of carbon fiber composite materials, the advantages of high strength, light weight and corrosion resistance of the carbon fiber composite materials are fully utilized by the process pipe column, the under-pump weighting anti-corrosion oil pump is arranged, the continuous sucker rod made of the carbon fiber composite materials is matched, the full coverage of the upper composite material sucker rod column on the pump is realized, the under-pump steel weighting rod is not under tension and compression load in the up-down stroke process, and the self anti-corrosion service life of the steel rod is prolonged.
The utility model relates to an oil well lifting pipe column, which comprises an oil pipe column and a sucker rod column; the tubing string is shown in fig. 1, is arranged in an oil well casing and comprises a lining tubing 1, a hydraulic anchor 2, a weighted anti-corrosion oil pump cylinder 3 under a pump, a tail pipe 4, a screen pipe 5 and a plug 6 which are connected in sequence from top to bottom; the sucker rod column is arranged in the tubing column, and comprises a polished rod, a quick connection joint, a continuous sucker rod 7 made of carbon fiber composite materials, a sucker rod safety joint 8 made of carbon fiber materials, a pull rod, an oil pump plunger 9 and a weighting rod 10 which are sequentially connected from top to bottom. The hydraulic anchor 2 is arranged at the upper end of the weighting anti-corrosion oil pump cylinder 3 under the pump, and the lining oil pipe 1 is arranged at the upper end of the hydraulic anchor 2, wherein the lining oil pipe 1 is an oil pipe with the outer diameter of 88.9mm and the inner diameter of 76 mm. The lower end of the weighted anti-corrosion oil pump cylinder 3 arranged under the pump is sequentially provided with a tail pipe 4, a screen pipe 5 and a plug 6, wherein the tail pipe 4 is a flat oil pipe with the outer diameter of 73mm and the inner diameter of 62 mm. The upper end of the pull rod and the oil pump plunger 9 is provided with a sucker rod safety joint 8 made of carbon fiber materials, and the upper end of the sucker rod safety joint 8 is provided with a carbon fiber composite continuous sucker rod 7 with the diameter of 22mm; the lower ends of the pull rod and the oil pump plunger 9 are connected with a weighting rod 10.
The under-pump weighting anti-corrosion oil pump plunger adopts a two-stage plunger+auxiliary sealing structure, as shown in fig. 2 and 3. Fig. 2 shows a ball valve liquid inlet and outlet mechanism, fig. 3 shows a positioning sealing mechanism, and a part b of fig. 2 is connected with a part a of fig. 3. Fig. 2 includes: the pump barrel coupling 11, the chromed thick-wall pump barrel 12, the upper liquid outlet joint 13, the upper floating valve seat joint 14, the plunger 15, the upper floating valve cover 16 and the first valve ball 17 are respectively in specification of S phi 42.88mm, the first valve seat 18 is respectively in specification of phi 55mm, the flow guide joint 19, the lower floating valve cover 20 and the second valve ball 21 are respectively in specification of S phi 34.93mm, and the second valve seat 22 is respectively in specification of phi 44mm, phi 44mm and phi 44mm, and the plunger upper joint 23 and the plunger 24 are respectively in specification of phi 44 mm. The ball valve liquid inlet and outlet mechanism adopts a two-stage plunger structure, the upper liquid outlet mechanism mainly comprises a phi 70mm plunger, an upper and lower moving valve cover, an S phi 45mm valve ball valve seat, a flow guiding joint, an S phi 35mm valve ball valve seat and other parts, and the lower liquid inlet mechanism mainly comprises a phi 44mm plunger upper joint, a phi 44mm plunger, a plunger lower liquid inlet joint and other parts. The outside of the phi 44mm plunger is provided with a positioning sealing mechanism. The ball valve liquid inlet and outlet mechanism is characterized in that a lateral liquid inlet duct is arranged on a liquid inlet joint 35 under a phi 44mm plunger, the lower end of the liquid inlet joint is connected with a weighting rod in a threaded manner, the weighting of the lower part of the lower plunger is realized, the weighting rod can be thickened and does not bear tensile load, and the self corrosion-resistant service life of the steel rod is prolonged. The positioning sealing mechanism mainly comprises a positioning lock catch 26, a lock catch sleeve 25, a sealing core tube 27, a lantern ring 28, a sealing ring 29, a sealing sleeve 31, a sealing core tube lower joint 33 and other parts. The positioning sealing mechanism is used for realizing the positioning of the plunger and the sealing of the movable chamber oil flow between the pump cylinder and the plunger.
In the well logging operation process of the oil well lifting pipe column provided by the embodiment, the under-pump weighting anti-corrosion oil pump barrel (comprising the pump barrel coupling 11, the thick-wall pump barrel 12, the lock grabbing sleeve 25 and the sealing sleeve 31) is lowered into the well along with the oil pipe column, and the weighting rod, the two-stage plunger of the oil pump and the positioning sealing piece (the rest parts of the oil pump are assembled according to an assembly drawing) are lowered into the well along with the oil pumping pipe column.
The lining oil pipe, the hydraulic anchor, the under-pump weighting anti-corrosion oil pump cylinder, the tail pipe, the screen pipe and the plug are connected through screw threads. In the sucker rod column, the upper end of the polish rod is connected with a ground pumping unit rope hanger, and the lower end of the polish rod is connected with the upper end of the quick connecting joint; the lower end of the quick connecting joint is connected with the upper end of the carbon fiber composite continuous sucker rod; the lower end of the carbon fiber composite continuous sucker rod is connected with the upper end of the carbon fiber sucker rod safety joint; the lower end of the carbon fiber sucker rod safety joint is connected with the upper end of the pull rod; the lower end of the pull rod is connected with the upper end of the oil pump plunger; the lower end of the oil pump plunger is connected with a weighting rod.
The polished rod is phi 28mm polished rod; the quick connecting joint is a connecting nipple of a polished rod and a carbon fiber composite continuous sucker rod; the outer diameter of the carbon fiber composite material continuous sucker rod is 22mm; the outer diameter of the pull rod is phi 22mm; the outer diameter of the weighting rod is phi 38mm or phi 45 mm. The carbon fiber sucker rod safety joint is used for realizing the safety disconnection of the sucker rod and the plunger of the oil pump when the pump is clamped.
In the tubing string, the upper end of the lining tubing is connected with a tubing hanger of the wellhead of the oil well, and the bottommost end of the lining tubing is connected with the upper end of the hydraulic anchor; the lower end of the hydraulic anchor is connected with the upper end of the pump cylinder of the heavy-duty anticorrosion oil pump; the lower end of the under-pump weighting anti-corrosion oil pump cylinder is connected with the upper end of the tail pipe; the lower end of the tail pipe is connected with the upper end of the screen pipe; the lower end of the screen pipe is connected with a plug.
The outer diameter of the lining oil pipe is 88.9mm, and the inner diameter is 76mm; the hydraulic anchor is a HYYM-115 hydraulic anchor; the upper end of the under-pump aggravated anticorrosion oil pump cylinder is provided with 31/2TBG standard threads, and the lower end is provided with 27/8TBG standard threads; the tail pipe is a common oil pipe with phi 73 mm; the screen pipe is a screen pipe with phi 73 mm; the plug is a phi 73mm plug.
The polished rod, the quick connecting joint, the carbon fiber composite material continuous sucker rod, the carbon fiber sucker rod safety joint, the pull rod, the oil pump plunger and the weighting rod are sequentially connected from top to bottom through screw threads; the sucker rod column on the pump adopts the carbon fiber composite material continuous sucker rod, so that the problems of broken and broken sucker rod column and the like caused by the fact that the strength of the sucker rod column is reduced due to corrosion of stratum water by the steel sucker rod column are effectively solved. Simultaneously, fully consider the pole safety problem, set up carbon fiber sucker rod safety joint, the continuous harmless play of carbon pole when solving the card pump.
In the oil well lifting pipe column provided by the embodiment of the utility model, the lining oil pipe, the hydraulic anchor, the under-pump weighting anti-corrosion oil pump cylinder, the tail pipe, the screen pipe and the plug are sequentially connected from top to bottom of the oil well wellhead through the screw threads, so that the problem of creeping of the oil well lifting pipe column in the well is effectively solved. Meanwhile, in the oil well lifting pipe column provided by the embodiment of the utility model, the lining oil pipe is further arranged, so that the problem of eccentric wear of the rod pipe is solved.
In the oil well lifting pipe column provided by the embodiment of the utility model, the polish rod, the quick connecting joint, the carbon fiber composite continuous sucker rod, the carbon fiber sucker rod safety joint, the pull rod, the oil pump plunger and the weighting rod are sequentially connected from top to bottom from the oil well wellhead, so that the problems of broken and disconnected of the pipe column and the like caused by the reduction of the strength of the pipe column due to the corrosion of stratum water on the steel sucker rod column on the pump are effectively solved. Meanwhile, the safety joint of the carbon fiber sucker rod is further arranged in the oil well lifting pipe column provided by the embodiment of the utility model, so that the problem of continuous and nondestructive lifting of the carbon rod during pump clamping is solved.
Claims (6)
1. An oil well lifting pipe column is characterized by comprising a tubing string and a sucker rod string; the tubing string comprises a hydraulic anchor connected to the upper end of the under-pump aggravated anticorrosion oil pump barrel, a lining tubing connected to the upper end of the hydraulic anchor, and a tail pipe, a screen pipe and a plug connected to the lower end of the under-pump aggravated anticorrosion oil pump barrel; the sucker rod plunger comprises a sucker pump plunger arranged in the pump lower weighting anti-corrosion sucker pump barrel, a sucker rod safety joint connected to the upper end of the sucker pump plunger, a continuous sucker rod connected to the upper end of the sucker rod safety joint, and a weighting rod connected to the lower end of the sucker pump plunger.
2. The oil well lifting string as recited in claim 1, wherein the pump plunger includes an internally disposed ball valve inlet and outlet mechanism and a locating seal mechanism disposed externally of the ball valve inlet and outlet mechanism.
3. The oil well lifting pipe column according to claim 2, wherein the ball valve inlet and outlet mechanism adopts a two-stage plunger structure, and the upper plunger structure comprises an upper plunger, an upper and lower traveling valve cover, a valve ball valve seat and a diversion joint which are sequentially connected; the lower plunger structure comprises a plunger upper joint, a lower plunger and a plunger lower liquid inlet joint which are sequentially connected and arranged and are used for connecting a valve seat; the positioning sealing mechanism is arranged outside the lower plunger.
4. The oil well lifting string according to claim 3, wherein the positioning sealing mechanism comprises a positioning lock catch arranged outside the lower plunger and a lock catch sleeve arranged outside the positioning lock catch, the lower end of the positioning lock catch is connected with a sealing core tube, the lower end of the sealing core tube is connected with a sealing core tube lower joint, a sealing sleeve is sleeved outside the sealing core tube and the sealing core tube lower joint, and a collar and a sealing ring are arranged between the sealing core tube and the sealing sleeve.
5. A lifting string for an oil well according to claim 3, wherein the plunger lower liquid inlet joint is provided with a lateral liquid inlet passage, and the lower end of the lateral liquid inlet passage is connected with a weighting rod in a threaded manner, so that the lower part of the lower plunger structure is weighted.
6. The oil well lifting string of claim 1, wherein the sucker rod safety joint and sucker rod are both made of carbon fiber composite materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320562344.6U CN219509598U (en) | 2023-03-21 | 2023-03-21 | Oil well lifting pipe column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320562344.6U CN219509598U (en) | 2023-03-21 | 2023-03-21 | Oil well lifting pipe column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219509598U true CN219509598U (en) | 2023-08-11 |
Family
ID=87522989
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320562344.6U Active CN219509598U (en) | 2023-03-21 | 2023-03-21 | Oil well lifting pipe column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219509598U (en) |
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2023
- 2023-03-21 CN CN202320562344.6U patent/CN219509598U/en active Active
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