CN116006092B - Anti-rotation load shedding device suitable for lining oil pipe - Google Patents
Anti-rotation load shedding device suitable for lining oil pipeInfo
- Publication number
- CN116006092B CN116006092B CN202111237454.7A CN202111237454A CN116006092B CN 116006092 B CN116006092 B CN 116006092B CN 202111237454 A CN202111237454 A CN 202111237454A CN 116006092 B CN116006092 B CN 116006092B
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- oil pipe
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- inner hole
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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Abstract
本发明公开了一种适用于内衬油管的防转式减载装置，包括外部结构和内部结构；所述外部结构顶端设有油管接头，内部结构顶端设有出油接头；出油接头的径向外周表面上设有两上部防转结构，两上部防转结构沿出油接头内孔的中轴线对称；油管接头的内孔上设有两下部防转结构，两下部防转结构沿油管接头内孔的中轴线对称；工作时，通过下降出油接头，使其上的上部防转结构进入油管接头的下部防转结构，防止出油接头相对油管接头转动，从而能够确保拆卸管柱时油管不转动，便于拆卸油管。利用本发明减载装置的防转机构，可防止在施工过程中发生管柱旋转，施工安全性大大提高。
This invention discloses an anti-rotation unloading device suitable for lined oil tubing, comprising an external structure and an internal structure. The external structure has an oil tubing connector at its top, and the internal structure has an oil outlet connector at its top. Two upper anti-rotation structures are symmetrically arranged along the central axis of the oil outlet connector's inner bore on its radially outer circumferential surface. Two lower anti-rotation structures are symmetrically arranged along the central axis of the oil tubing connector's inner bore on its inner bore. During operation, by lowering the oil outlet connector, its upper anti-rotation structures enter the lower anti-rotation structures of the oil tubing connector, preventing the oil outlet connector from rotating relative to the oil tubing connector. This ensures that the oil tubing does not rotate during tubing string disassembly, facilitating tubing disassembly. Utilizing the anti-rotation mechanism of this unloading device, tubing string rotation can be prevented during construction, significantly improving construction safety.
Description
Technical Field
The invention relates to an improvement of a deep pumping lifting load-shedding device for an oil field sucker-rod pump, in particular to an anti-rotation load-shedding device applicable to a lining oil pipe.
Background
The low-permeability oil reservoir is a main array of oil field development, is generally buried deeply, and achieves the purposes of improving the oil well yield and the development benefit by deep pumping and amplifying the production pressure difference in order to improve the development effect. The deepening of the pump hanging deep pumping will increase the load of the hanging point and reduce the service life of the pole, so that the researchers invent several load reducing devices. Through the load relief device, not only can the beam-pumping unit suspension point load be reduced, but also the cyclic stress ratio of the pole can be reduced, and the purposes of reducing cost and efficiency and prolonging the service life of the pole are achieved.
The patent with publication number CN201714351U discloses a deep pumping booster device of a sucker rod pump, which comprises a sucker rod, a small pump cylinder, a small plunger, a large plunger, a bearing pipe and a large pump cylinder. The bearing pipe is internally provided with a large pump cylinder, a small plunger, a large plunger and a liquid inlet connector in sequence, the upper end of the small plunger, the lower end of the large plunger and the liquid inlet connector are connected with an oil pumping rod, and the small plunger, the large plunger and the liquid inlet connector are connected together. The invention has the characteristics of unlimited pump hanging depth, cantilever Liang Zhuangtai formed by the pump cylinders, elimination of the problem of difficult descending of the pole column caused by the concentricity of the plunger, improvement of application reliability, alleviation of horsehead suspension point load, reduction of the influence of pole column expansion on the oil pump, improvement of pump efficiency, remarkable energy-saving effect and the like, and is widely applied to the deep pumping process of the oil extraction of the oil pump with the pole in petroleum exploitation
The patent with publication number CN202971147U discloses a drainage type deep drawing load-reducing device, which comprises a bearing pipe and a large pump cylinder which are connected up and down, wherein a small plunger and a large plunger are arranged in the center of the inside of a pipe cavity formed by the bearing pipe and the large pump cylinder, the small pump cylinder is sleeved outside the small plunger, and the small plunger is suspended in the bearing pipe through a suspension joint sleeved at the upper end of the outer side of the small pump cylinder. The large plunger is connected with the lower end of the small plunger through an upper coupling at the upper end of the large plunger. The upper end of the small plunger is connected with the sucker rod through an oil outlet connector, and the lower coupling at the lower end of the large plunger is connected with the sucker rod through a liquid inlet connector. The oil outlet connector is provided with a liquid outlet hole, and the liquid inlet connector is provided with a liquid inlet hole. The lower end of the bearing tube is provided with an oil drain hole. The invention solves the problem of difficult descending of the pole column caused by the concentricity of the plunger, deepens the pump hanging, reduces the stroke loss of the inner pipe and the pole column of the well, improves the liquid yield of the oil well, reduces the energy consumption and avoids pollution in the operation process.
The patent with publication number CN202971146U discloses an insertion sealing type deep drawing booster device, which comprises a sealing sleeve, a bearing pipe and a large pump cylinder which are sequentially connected together, wherein the center of the inside of a pipe cavity formed by the sealing sleeve, the bearing pipe and the large pump cylinder is sleeved with a small plunger and a large plunger which are connected together through a conversion joint, and the outer side of the small plunger is sleeved with a sealing core pipe and a small pump cylinder which are connected together through a reducing joint from top to bottom. The two groups of sealing components sleeved on the sealing core pipe comprise sealing rings, lantern rings, spacing rings and sealing copper rings which are matched and sealed together from top to bottom. The upper end of the small plunger is connected with the sucker rod through a liquid outlet connector, and the lower end of the large plunger is connected with the sucker rod through a sucker rod connector. The liquid outlet connector is provided with a liquid outlet hole, and the sucker rod connector is provided with a liquid inlet hole. The sealing sleeve is connected with the bearing pipe through a bearing pipe joint, and the bearing pipe is connected with the large pump cylinder through a large pump cylinder joint. The large pump cylinder joint is provided with a breathing hole. The invention thoroughly solves the problems of limited depth of the lower pump, oil drainage only by an oil drainage device and the like in the prior art.
The prior art has the prominent defects that the prior art plays a role in reducing the suspension point load, but has some problems. Because the load shedding device disclosed in the patent requires a mating disjointer during application. The disjointer is also experiencing structural improvement for field applications. At first, the disjointer adopts a lowering butt joint and lifting type disconnecting technology, and the technology has the defects that the disjointer can be automatically disconnected with the load reducing device in the using process, and the reliability of the pipe column is problematic.
In order to overcome the problem of disconnection of the disjointer and the load shedding device in the using process, a pipe column which is not disconnected and is only used for load shedding is designed, the pipe column overcomes the defect of disconnection of the load shedding device and the disjointer in the using process, and the problem of inapplicability to a lining pipe column exists.
Along with the exploitation of high water content of the oil field, the corrosion and the eccentric wear of the oil pipe are serious, and a plurality of oil wells use lining oil pipes, so that the use of the existing load shedding device is restricted, and in order to overcome the defects of the two points, designers improve the disjointer and design the disjointer into a rotary disjointer. The disjointer is abutted by a rotating and load relieving device. If the original load shedding device is used again, the rotation of the tubular column can occur in the using process, so that an operator is very bad to operate, and serious potential safety hazards exist. Therefore, it is an urgent need to invent an anti-rotation load shedding device suitable for lining oil pipes.
Disclosure of Invention
The invention aims to provide a novel load shedding device suitable for deep pumping and lifting of a rod pump, in particular to an anti-rotation load shedding device suitable for an oil well lined with an oil pipe.
The technical scheme adopted by the invention is as follows.
The anti-rotation load shedding device suitable for the lining oil pipe is characterized by comprising an external structure and an internal structure.
The oil pipe joint is arranged at the top end of the outer structure, the oil outlet joint is arranged at the top end of the inner structure, two upper anti-rotation structures are arranged on the radial outer peripheral surface of the oil outlet joint and are symmetrical along the central axis of the inner hole of the oil outlet joint, two lower anti-rotation structures are arranged on the inner hole of the oil pipe joint and are symmetrical along the central axis of the inner hole of the oil pipe joint, and when the oil pipe joint is in operation, the upper anti-rotation structures on the oil pipe joint enter the lower anti-rotation structures of the oil pipe joint through descending the oil outlet joint, so that the oil outlet joint is prevented from rotating relative to the oil pipe joint, and therefore the oil pipe is prevented from rotating when a pipe column is disassembled, and the oil pipe is convenient to disassemble.
The oil pipe joint comprises an oil pipe joint body, an oil pipe joint, a lower anti-rotation structure, a step inner hole, an upper anti-rotation structure, an arc-shaped long protruding strip and an arc-shaped groove strip, wherein the aperture of the top end of the inner hole of the oil pipe joint body is larger than the inner diameter of the remaining part of the inner hole of the oil pipe joint body, so that a step inner hole is formed below the top end of the inner hole of the oil pipe joint body, the upper anti-rotation structure is an arc-shaped long protruding strip which is arranged on the radial outer peripheral surface of the lower part of the oil pipe joint body at a certain height and has an arc-shaped horizontal section, the lower anti-rotation structure is an arc-shaped groove strip which is arranged on the step inner hole of the oil pipe joint body and has an upward opening, and when the oil pipe joint descends, each arc-shaped long protruding strip can respectively enter the arc-shaped groove strip of the oil pipe joint body, and the oil pipe joint body is prevented from rotating relative to the oil joint body.
As the preferable technical scheme, the arc length of any horizontal section of each arc-shaped groove strip is longer than that of each horizontal section of each arc-shaped long convex strip.
As the preferable technical scheme, the left side surface and the right side surface of each arc-shaped long raised strip are intersected with the radial outer circumferential surface of the oil outlet joint to form two curves, and the distance between the upper ends of the two curves is larger than the distance between the lower ends of the two curves.
As the preferable technical scheme, the distances between the upper ends of the two curves are equal, and the distances between the lower ends of the two curves are gradually reduced from top to bottom or are gradually reduced from top to bottom.
As a preferable technical scheme, the left side surface and the right side surface of the arc-shaped long raised strip are intersected with the bottoms of two curves formed by the intersection of the radial outer peripheral surfaces of the oil outlet joint, so that a downward pointed head is formed at the bottom end of the arc-shaped long raised strip.
According to the technical scheme, the widths of the left end and the right end of the horizontal section of the upper part of the separation part of two adjacent arc-shaped groove strips on the step inner hole are gradually narrowed from bottom to top to form an upward pointed head, and when the oil outlet joint descends, one side face of the arc-shaped long raised strip is tangent to one side wall of the arc-shaped groove strip below the oil outlet joint, so that the arc-shaped long raised strip can conveniently enter the arc-shaped groove strip below the oil outlet joint.
As a preferred embodiment, the diameter of the radially inner peripheral surface of the top end of each arcuate groove strip of the oil pipe joint is larger than the diameter of the radially inner peripheral surface of the bottom end thereof.
As a preferred embodiment, the diameter of the radially inner peripheral surface of each arcuate groove strip of the pipe joint becomes gradually smaller or stepwise smaller from top to bottom.
As the preferable technical scheme, the external structure comprises an oil pipe joint, an oil pipe nipple, a large pump cylinder joint, a large pump cylinder and an oil pipe lower joint which are sequentially connected through threads from top to bottom, wherein the central axes of the inner holes are on the same straight line.
The internal structure comprises an oil outlet joint, a small plunger, a large plunger joint, a large plunger and a sucker rod joint which are sequentially connected through threads from top to bottom, wherein the central axis of the inner hole of the oil pipe joint and the central axis of the inner hole of the oil pipe joint are on the same straight line.
The radial outer peripheral surface of the small plunger is sleeved with a small pump cylinder, the radial outer peripheral surface of the small pump cylinder is not in contact with the oil pipe nipple, the upper end of the small plunger is positioned in an inner hole at the lower end of the oil pipe joint, the lower end of the small plunger is positioned in an inner hole of the large pump cylinder, the upper end of the large plunger joint is positioned in an inner hole of the large pump cylinder, the lower end of the large plunger joint is positioned in an inner hole of the oil pipe lower joint, the large plunger is inlaid on the radial outer peripheral surface of the middle part, and the radial outer peripheral surface of the large plunger is in contact with the radial inner peripheral surface of the large pump cylinder.
The upper end of the oil pipe nipple is sleeved on an inner hole at the lower end of the oil pipe joint, the lower end of the oil pipe nipple is sleeved on an inner hole at the top end of the large pump barrel joint, the upper end of the large pump barrel is sleeved on an inner hole at the bottom end of the large pump barrel joint, and the lower end of the large pump barrel is sleeved on an inner hole at the top end of the oil pipe lower joint.
The anti-rotation structure design is respectively carried out at the oil outlet joint and the oil pipe joint, wherein the oil outlet joint is provided with an upper anti-rotation structure, the oil pipe joint is provided with a lower anti-rotation structure, and the upper anti-rotation structure and the lower anti-rotation structure are mutually matched in the use process to complete the anti-rotation function of the dismantling pipe column. The upper anti-rotation mechanism and the lower anti-rotation mechanism are not contacted in the normal oil pumping process, and only in the operation process, the upper anti-rotation mechanism and the lower anti-rotation mechanism are contacted, so that the rotation of the pipe column is prevented, and the construction safety is ensured. By using the load shedding device, deep pumping of the low-permeability reservoir can be successfully implemented, and the yield of an oil well is improved. The load reducing device expands the application range, and is not only suitable for the load reducing deep drawing process of the common oil pipe, but also suitable for the load reducing deep drawing process of the lining oil pipe. By utilizing the anti-rotation mechanism of the load shedding device, the rotation of the pipe column in the construction process is prevented, and the construction safety is greatly improved.
Drawings
FIG. 1 is a schematic diagram of an anti-rotation load shedding device suitable for lining an oil pipe.
Fig. 2 is a schematic structural view of a portion a of fig. 1.
Fig. 3 is a partial enlarged view of a portion D of fig. 2.
Fig. 4 is a partial enlarged view of a portion B of fig. 1.
Fig. 5 is a partial enlarged view of a portion C of fig. 1.
Fig. 6 is a schematic perspective view of an oil outlet joint.
Fig. 7 is a top view of fig. 6.
Fig. 8 is a schematic perspective view of an oil pipe joint.
Fig. 9 is a top view of fig. 8.
Fig. 10 is a schematic view of the oil outlet fitting in combination with the tubing fitting.
Fig. 11 is a sectional view taken along E-E' of fig. 10.
The oil pipe joint comprises an oil outlet joint body-1, an oil pipe joint body-2, a step inner hole-21, an arc long convex strip-101, an arc groove strip-201, a separation part-202, a small plunger-3, an oil pipe nipple-4, a small pump cylinder-5, a large pump cylinder joint body-6, a large pump cylinder-7, a large plunger joint body-8, a large plunger-9, an oil pipe lower joint body-10 and an oil pumping rod joint body-11.
Detailed Description
The invention will be further described with reference to the drawings and examples.
Example 1. As shown in figures 1-11, the anti-rotation load shedding device is suitable for lining oil pipes and is characterized by comprising an outer structure and an inner structure.
The oil pipe joint is characterized in that the top end of the outer structure is provided with an oil pipe joint 2, the top end of the inner structure is provided with an oil outlet joint 1, the radial outer peripheral surface of the oil outlet joint 1 is provided with two upper anti-rotation structures, the two upper anti-rotation structures are symmetrical along the central axis of the inner hole of the oil outlet joint 1, the inner hole of the oil pipe joint 2 is provided with two lower anti-rotation structures, the two lower anti-rotation structures are symmetrical along the central axis of the inner hole of the oil pipe joint 2, and in operation, the upper anti-rotation structures on the lower anti-rotation structures enter the lower anti-rotation structures of the oil pipe joint 2 by descending the oil outlet joint 1, so that the oil pipe is prevented from rotating relative to the oil pipe joint 2, and the oil pipe is convenient to detach when a pipe column is detached.
The bore diameter of the top end of the inner bore of the oil pipe joint 2 is larger than the bore diameter of the rest part of the inner bore of the oil pipe joint 2 so as to form a step inner bore 21 below the top end of the inner bore of the oil pipe joint 2, the upper anti-rotation structure is an arc-shaped long protruding strip 101 with an arc-shaped horizontal section, the arc-shaped long protruding strip is arranged on the radial outer peripheral surface of the lower part of the oil outlet joint 1, the lower anti-rotation structure is an arc-shaped groove strip 201 with an arc-shaped horizontal section, the opening of the arc-shaped long protruding strip is arranged on the step inner bore of the oil pipe joint 2, and when the oil outlet joint 1 descends, each arc-shaped long protruding strip 101 on the lower anti-rotation structure can enter the arc-shaped groove strip 201 of the oil pipe joint 2 respectively, so that the oil outlet joint 1 is prevented from rotating relative to the oil pipe joint 2.
Any one of the horizontal cross-section arc lengths of the arc-shaped groove strips 201 is longer than the horizontal cross-section arc length of the arc-shaped long convex strips 101.
The left and right side surfaces of each arc-shaped long convex strip 101 intersect with the radial outer circumferential surface of the oil outlet joint 1 to form two curves, and the upper end spacing of the two curves is larger than the lower end spacing of the two curves.
The upper end spacing of the two curves is equal to the line, and the lower end spacing of the two curves is gradually reduced from top to bottom or is gradually reduced from top to bottom.
The left and right sides of the arc-shaped long protruding strip 101 intersect with the bottoms of two curves formed by the intersection of the radial outer circumferential surfaces of the oil outlet joint 1, so that a downward pointed tip is formed at the bottom end of the arc-shaped long protruding strip 101.
The widths of the left and right ends of the horizontal cross section of the upper part of the separation part 202 of the adjacent two arc-shaped groove strips 201 on the step inner hole 21 gradually narrow from bottom to top to form an upward tip, and when the oil outlet joint 1 descends, one side surface of the arc-shaped long convex strip 101 is tangent with one side wall of the arc-shaped groove strip 201 below the arc-shaped long convex strip 101, so that the arc-shaped long convex strip 101 can conveniently enter the arc-shaped groove strip 201 below the arc-shaped long convex strip.
The diameter of the radially inner peripheral surface of the top end of each arcuate groove strip 201 of the oil pipe joint 2 is larger than the diameter of the radially inner peripheral surface of the bottom end thereof.
The diameter of the radially inner peripheral surface of each arcuate groove strip 201 of the pipe joint 2 becomes gradually smaller or stepwise smaller from top to bottom.
The external structure comprises an oil pipe joint 2, an oil pipe nipple 4, a large pump barrel joint 6, a large pump barrel 7 and an oil pipe lower joint 10 which are sequentially connected through threads from top to bottom, wherein the central axes of the inner holes are on the same straight line.
The internal structure comprises an oil outlet connector 1, a small plunger 3, a large plunger connector 8, a large plunger 9 and a sucker rod connector 11 which are sequentially connected through threads from top to bottom, wherein the central axis of the inner hole is in the same straight line with the central axis of the inner hole of the oil pipe connector 2.
The small pump cylinder 5 is sleeved on the radial outer peripheral surface of the small plunger 3, the radial outer peripheral surface of the small pump cylinder 5 is not in contact with the oil pipe nipple 4, the upper end of the small plunger 3 is positioned in an inner hole at the lower end of the oil pipe joint 2, the lower end of the small plunger 3 is positioned in an inner hole of the large pump cylinder 7, the upper end of the large plunger joint 8 is positioned in an inner hole of the large pump cylinder 7, the lower end of the large plunger joint 8 is positioned in an inner hole of the oil pipe lower joint 10, the large plunger 9 is inlaid on the radial outer peripheral surface of the middle part, and the radial outer peripheral surface of the large plunger 9 is in contact with the radial inner peripheral surface of the large pump cylinder 7.
The upper end of the oil pipe nipple 4 is sleeved on an inner hole at the lower end of the oil pipe joint 2, the lower end of the oil pipe nipple 4 is sleeved on an inner hole at the top end of the large pump barrel joint 6, the upper end of the large pump barrel 7 is sleeved on an inner hole at the bottom end of the large pump barrel joint 6, and the lower end of the large pump barrel 7 is sleeved on an inner hole at the top end of the oil pipe lower joint 10.
During the use, the deep pumping load shedding pipe column is put into in a subsection mode, the depth of the pump is 2500m, and the load shedding device is designed to be 1200m for illustration. Firstly, the oil pump and the 1300m pipe column above are put into the well, and then the 1300m sucker rod is put into the well, and at the moment, the sucker rod joint 11 and the oil pipe lower joint 10 of the load reducing device are respectively in butt joint with the put sucker rod and the oil pipe. The lower part of the disjointer is connected with the oil outlet joint 1, and the rest 1200m oil pipe and the rest 1200m sucker rod are put in, and the bottom of the sucker rod is provided with the upper part of the disjointer. Is disjointed after being put down to the position the device is in rotary butt joint. The upper part of the invention point anti-rotation mechanism and the lower part of the anti-rotation mechanism are not contacted in the use process. Only when carrying out the operation, with upper portion anti-rotation mechanism's arch down in concave type structure, concave type structure can prevent the tubular column rotation, ensures construction safety.
The anti-rotation structure is designed at the positions of the oil outlet connector and the oil pipe connector respectively, wherein the oil outlet connector is designed with an upper anti-rotation structure, the oil pipe connector is designed with a lower anti-rotation structure, and the upper anti-rotation structure and the lower anti-rotation structure are mutually matched in the use process to complete the anti-rotation function of the disassembly pipe column. The upper anti-rotation mechanism and the lower anti-rotation mechanism are not contacted in the normal oil pumping process, and only in the operation process, the upper anti-rotation mechanism and the lower anti-rotation mechanism are contacted, so that the rotation of the pipe column is prevented, and the construction safety is ensured. By using the load shedding device, deep pumping of the low-permeability reservoir can be successfully implemented, and the yield of an oil well is improved. The load reducing device expands the application range, and is not only suitable for the load reducing deep drawing process of the common oil pipe, but also suitable for the load reducing deep drawing process of the lining oil pipe. By utilizing the anti-rotation mechanism of the load shedding device, the rotation of the pipe column in the construction process is prevented, and the construction safety is greatly improved.
In example 2, the difference between the outer side surfaces of the two arc-shaped long protruding strips 101 and the plane passing through the central axis thereof is that two curves are formed, the upper end interval of the two curves is equal, and the lower end interval of the two curves is reduced from the upper section to the lower section. The diameter of the radially inner peripheral surface of each arcuate groove strip 201 of the pipe joint 2 becomes gradually smaller or stepwise smaller from top to bottom.
The above-mentioned embodiments are only for understanding the present invention, and are not intended to limit the technical solutions described in the present invention, and a person skilled in the relevant art may make various changes or modifications based on the technical solutions described in the claims, and all equivalent changes or modifications are intended to be included in the scope of the present invention. The present invention is not described in detail in the present application, and is well known to those skilled in the art.
Claims (4)
1. The anti-rotation load shedding device suitable for the lining oil pipe is characterized by comprising an external structure and an internal structure;
The oil pipe joint (2) is arranged at the top end of the outer structure, the oil outlet joint (1) is arranged at the top end of the inner structure, two upper anti-rotation structures are arranged on the radial outer peripheral surface of the oil outlet joint (1) and are symmetrical along the central axis of the inner hole of the oil outlet joint (1), two lower anti-rotation structures are arranged on the inner hole of the oil pipe joint (2) and are symmetrical along the central axis of the inner hole of the oil pipe joint (2), and when the oil pipe joint is in operation, the upper anti-rotation structures on the lower anti-rotation structures enter the lower anti-rotation structures of the oil pipe joint (2) through descending the oil outlet joint (1), so that the oil pipe is prevented from rotating relative to the oil pipe joint (2), and the oil pipe is prevented from rotating when a pipe column is disassembled, and the oil pipe is convenient to disassemble;
The diameter of the top end of the inner hole of the oil pipe joint (2) is larger than the inner diameter of the rest part of the inner hole of the oil pipe joint (2) so as to form a step inner hole (21) below the top end of the inner hole of the oil pipe joint (2), the upper anti-rotation structure is an arc-shaped long convex strip (101) with an arc-shaped horizontal section, which is arranged on the radial outer peripheral surface at a certain height of the lower part of the oil outlet joint (1), the lower anti-rotation structure is an arc-shaped groove strip (201) with an arc-shaped horizontal section, which is arranged on the step inner hole of the oil pipe joint (2) and is upwards opened, when the oil outlet joint (1) descends, each arc-shaped long convex strip (101) can respectively enter the arc-shaped groove strip (201) of the oil pipe joint (2) to prevent the oil outlet joint (1) from rotating relative to the oil pipe joint (2);
Any horizontal section arc length of each arc-shaped groove strip (201) is longer than each horizontal section arc length of each arc-shaped long convex strip (101);
The left side surface and the right side surface of each arc-shaped long convex strip (101) are intersected with the radial outer circumferential surface of the oil outlet joint (1) to form two curves, and the distance between the upper ends of the two curves is larger than the distance between the lower ends of the two curves;
the upper end interval of the two curves is equal to the interval of the two curves, and the interval of the lower ends of the two curves is gradually reduced from top to bottom or is gradually reduced from top to bottom;
The left side surface and the right side surface of the arc-shaped long protruding strip (101) are intersected with the bottoms of two curves formed by the intersection of the radial outer circumferential surfaces of the oil outlet joint (1) so as to form a downward pointed end at the bottom end of the arc-shaped long protruding strip (101);
the widths of the left and right ends of the horizontal cross sections of the upper parts of the separation parts (202) of two adjacent arc-shaped groove strips (201) on the step inner hole (21) are gradually narrowed from bottom to top so as to form an upward pointed head, and when the oil outlet joint (1) descends, one side surface of the arc-shaped long raised strip (101) is tangent to one side wall of the arc-shaped groove strip (201) below the arc-shaped long raised strip, so that the arc-shaped long raised strip (101) can conveniently enter the arc-shaped groove strip (201) below the arc-shaped long raised strip.
2. An anti-rotation load shedding apparatus for lined tubing as claimed in claim 1, wherein the diameter of the radially inner peripheral surface of the top end of each arcuate groove strip (201) of the tubing connector (2) is greater than the diameter of the radially inner peripheral surface of the bottom end thereof.
3. An anti-rotation load shedding device suitable for lining oil pipes as claimed in claim 2, wherein the diameter of the radial inner peripheral surface of each arc-shaped groove strip (201) of the oil pipe joint (2) is gradually reduced or stepwise reduced from top to bottom.
4. The anti-rotation load shedding device suitable for the lining oil pipe is characterized in that the external structure comprises an oil pipe joint (2), an oil pipe nipple (4), a large pump cylinder joint (6), a large pump cylinder (7) and an oil pipe lower joint (10) which are sequentially connected from top to bottom through the central axes of inner holes in a threaded connection on the same straight line;
the internal structure comprises an oil outlet joint (1), a small plunger (3), a large plunger joint (8), a large plunger (9) and a sucker rod joint (11) which are sequentially connected from top to bottom through threads, wherein the central axis of the inner hole is in the same straight line with the central axis of the inner hole of the oil pipe joint (2);
the radial outer peripheral surface of the small plunger (3) is sleeved with a small pump cylinder (5), the radial outer peripheral surface of the small pump cylinder (5) is not in contact with the oil pipe nipple (4), the upper end of the small plunger (3) is positioned in an inner hole at the lower end of the oil pipe joint (2), the lower end of the small plunger (3) is positioned in an inner hole of the large pump cylinder (7), the upper end of the large plunger joint (8) is positioned in an inner hole of the large pump cylinder (7), the lower end of the large plunger joint (8) is positioned in an inner hole of the oil pipe lower joint (10), the large plunger (9) is inlaid on the radial outer peripheral surface of the middle part, and the radial outer peripheral surface of the large plunger (9) is in contact with the radial inner peripheral surface of the large pump cylinder (7);
the upper end of the oil pipe nipple (4) is sleeved on an inner hole at the lower end of the oil pipe joint (2), the lower end of the oil pipe nipple (4) is sleeved on an inner hole at the top end of the large pump barrel joint (6), the upper end of the large pump barrel (7) is sleeved on an inner hole at the bottom end of the large pump barrel joint (6), and the lower end of the large pump barrel (7) is sleeved on an inner hole at the top end of the oil pipe lower joint (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111237454.7A CN116006092B (en) | 2021-10-22 | 2021-10-22 | Anti-rotation load shedding device suitable for lining oil pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111237454.7A CN116006092B (en) | 2021-10-22 | 2021-10-22 | Anti-rotation load shedding device suitable for lining oil pipe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116006092A CN116006092A (en) | 2023-04-25 |
| CN116006092B true CN116006092B (en) | 2025-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111237454.7A Active CN116006092B (en) | 2021-10-22 | 2021-10-22 | Anti-rotation load shedding device suitable for lining oil pipe |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4477104A (en) * | 1981-01-15 | 1984-10-16 | Ava International Corporation | Releasable latching apparatus |
| CN202971147U (en) * | 2012-12-13 | 2013-06-05 | 中国石油化工股份有限公司 | Oil leakage type deep pumping and deloading device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632092B (en) * | 2015-02-16 | 2017-05-10 | 中国石油天然气股份有限公司 | Oil pipe |
| CN107725008B (en) * | 2017-09-05 | 2024-03-08 | 中国石油化工股份有限公司 | Anti-blocking sieve tube column integrating oil extraction and sand washing |
| CN209670915U (en) * | 2018-12-28 | 2019-11-22 | 东营百华石油技术开发有限公司 | A kind of oil pipe compensator |
| CN212583677U (en) * | 2020-07-27 | 2021-02-23 | 东营市汇诚石油工程技术有限责任公司 | Hydraulic load-reducing oil pumping device |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4477104A (en) * | 1981-01-15 | 1984-10-16 | Ava International Corporation | Releasable latching apparatus |
| CN202971147U (en) * | 2012-12-13 | 2013-06-05 | 中国石油化工股份有限公司 | Oil leakage type deep pumping and deloading device |
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| CN116006092A (en) | 2023-04-25 |
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