CN213298230U - Suspended long plunger antiscale sand-proof oil-well pump - Google Patents
Suspended long plunger antiscale sand-proof oil-well pump Download PDFInfo
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- CN213298230U CN213298230U CN202022040348.7U CN202022040348U CN213298230U CN 213298230 U CN213298230 U CN 213298230U CN 202022040348 U CN202022040348 U CN 202022040348U CN 213298230 U CN213298230 U CN 213298230U
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Abstract
The utility model discloses a suspension type long plunger scale control sand control oil-well pump relates to oil field oil recovery technical field, include: the anti-scaling connecting pipe is characterized by comprising a short pump barrel and a long plunger positioned in the short pump barrel, the lower part of the short pump barrel is connected with the anti-scaling connecting pipe, the length of the long plunger is greater than the sum of the total length of the short pump barrel and the anti-scaling connecting pipe, outer pipes are arranged outside the short pump barrel and the anti-scaling connecting pipe, and the outer pipes are fixedly connected with the lower end of the anti-scaling. The utility model discloses install the scale control connecting pipe in short pump barrel lower part, the length of long plunger be greater than short pump barrel with scale control connecting pipe total length sum to make can whole cooperation friction between oil pumping in-process long plunger and the short pump barrel, thereby avoided the inside scale deposit problem of short pump barrel. The oil-well pump adopts a suspension type structure, the short pump barrel and the long plunger are suspended in the outer pipe, the tail pipe carries the tail pipe, and external extrusion, impact and the like are all acted on the outer pipe, so that the internal short pump barrel is protected, the stress deformation of the short pump barrel is avoided, the pump clamping phenomenon is reduced, and the pump efficiency is improved.
Description
Technical Field
The utility model relates to an oil field oil recovery technical field, in particular to suspension type long plunger scale control sand control oil-well pump.
Background
After development of oil fields enters a medium-high water-cut period or ternary composite injection and polymerization, the mineralization degree and the corrosion capability of oil wells are greatly enhanced, the conditions of sand production, scaling, corrosion and the like are increasingly serious, corrosion and scaling blockage can be easily caused, and the conditions are commonly existed in oil fields all over the country. When the conventional oil well pump is used for pumping oil in the oil wells, the defects of sand blocking, low pump efficiency and the like often occur. Meanwhile, in the exploitation of an oil well which needs to be provided with an underground tool for technical measures and an oil well which needs to be lengthened with a tail pipe, the pump cylinder is subjected to larger tension due to the longer tail pipe under the pump or the action of a packer, and the pump cylinder is easy to reduce and deform under the action of the larger tension, so that the downward resistance of the plunger is increased, and the pump clamping phenomenon can occur in severe cases, so that the oil well pump fails early, the production of the oil well is stopped, the operation is frequent, and the production cost of crude oil is greatly improved.
SUMMERY OF THE UTILITY MODEL
To above defect, the utility model aims at providing a suspension type long plunger scale control sand control oil-well pump, this suspension type long plunger scale control sand control oil-well pump can not lead to the oil-well pump inefficacy because of scale deposit problem and pump barrel warp, cause the oil well to stop production.
In order to realize the purpose, the technical scheme of the utility model is that:
a suspended long-plunger antiscale sand-proof oil well pump comprises: the anti-scaling device comprises a short pump barrel and a long plunger positioned in the short pump barrel, wherein the lower part of the short pump barrel is connected with an anti-scaling connecting pipe, the length of the long plunger is greater than the sum of the total lengths of the short pump barrel and the anti-scaling connecting pipe, outer pipes are arranged outside the short pump barrel and the anti-scaling connecting pipe, and the lower ends of the outer pipes and the anti-scaling connecting pipe are fixedly connected.
The top of the long plunger is sequentially connected with an upper traveling valve assembly and an upper oil outlet joint, the upper traveling valve assembly extends out of the short pump barrel and comprises an upper traveling valve seat and an upper traveling valve ball, the top end of the upper oil outlet joint is provided with a sucker rod connecting port, the side face of the upper oil outlet joint is provided with an oil outlet, and the oil outlet is a left-spiral oil outlet.
The bottom of the long plunger is connected with a downstream valve assembly, the downstream valve assembly comprises a downstream valve seat, a downstream valve ball located on the downstream valve seat, and a downstream valve cover for guiding the downstream valve ball.
And a pump cylinder centralizing sleeve is arranged between the short pump cylinder and the outer pipe.
The anti-scale connecting pipe is fixedly connected with the short pump barrel through a pump barrel centralizing joint, and the inner diameter of the anti-scale connecting pipe is slightly larger than that of the short pump barrel.
The lower ends of the outer pipe and the anti-scale connecting pipe are fixedly connected through a pump cylinder lower coupling, a through hole is formed in the middle of the pump cylinder lower coupling, and the lower traveling valve assembly can shuttle in the through hole.
The large flow channel fixed valve assembly comprises a fixed valve seat, a fixed valve ball located on the fixed valve seat, and a fixed valve cover for guiding the fixed valve ball.
The oil passage is arranged in the middle of the fixed valve cover, the oil passage is similar to a petal shape, a guide rib is formed at the junction between every two adjacent petals, the guide ribs jointly enclose a guide passage, and the fixed valve ball is located in the guide passage.
The upper end of the fixed valve cover is provided with an inclined hole, and the inclined hole corresponds to the oil liquid channel.
The lower end of the large flow channel fixed valve assembly is fixedly connected with a fixed valve compression joint, and the top end of the outer pipe is connected with an oil pipe coupling.
After the technical scheme is adopted, the beneficial effects of the utility model are that:
because the utility model discloses suspension type long plunger scale control sand control oil-well pump, include: the anti-scaling connecting pipe is characterized by comprising a short pump barrel and a long plunger positioned in the short pump barrel, the lower part of the short pump barrel is connected with the anti-scaling connecting pipe, the length of the long plunger is greater than the sum of the total length of the short pump barrel and the anti-scaling connecting pipe, outer pipes are arranged outside the short pump barrel and the anti-scaling connecting pipe, and the outer pipes are fixedly connected with the lower end of the anti-scaling. The utility model discloses install the scale control connecting pipe in short pump barrel lower part, the length of long plunger be greater than short pump barrel with scale control connecting pipe total length sum to make can whole cooperation friction between oil pumping in-process long plunger and the short pump barrel, thereby avoided the inside scale deposit problem of short pump barrel. The oil-well pump adopts a suspension type structure, the short pump barrel and the long plunger are suspended in the outer pipe, only by fixedly connecting the lower end of the outer pipe and the lower end of the anti-scaling connecting pipe, the tail pipe carries and external extrusion, impact and the like are all acted on the outer pipe, so that the internal short pump barrel is protected, the short pump barrel is prevented from being stressed and deformed, the service life of the short pump barrel is prolonged, the pump clamping phenomenon is reduced, and the pump efficiency is improved. Meanwhile, an annular sand setting structure is formed among the outer pipe, the short pump barrel and the anti-scaling connecting pipe, gravel in oil flowing out of the short pump barrel can be set in an annular space, and accumulation of the gravel on the top of the pump is avoided.
To sum up, the utility model discloses suspension type long plunger scale control sand control oil-well pump has solved among the prior art pump barrel and has appeared the scale deposit easily and lead to the pump efficiency low with the pump barrel warp the technical problem that the pump became invalid that leads to, the utility model discloses suspension type long plunger scale control sand control oil-well pump is high wear-resisting, corrosion-resistant, the not scale deposit of pump barrel, and the pump barrel is indeformable in the oil recovery process moreover, and the pump efficiency is high.
Drawings
FIG. 1 is a schematic structural view of a suspended long-plunger anti-scaling and sand-proof oil well pump of the present invention;
FIG. 2 is a schematic structural view of the upper oil outlet joint of FIG. 1;
in the figure: 10. the oil pipe coupling comprises an oil pipe coupling 11, an outer pipe 12, a short pump barrel 13, a pump barrel centering sleeve 14, a long plunger 15, a pump barrel centering joint 16, an anti-scale connecting pipe 17, a pump barrel lower coupling 18, a downstream valve assembly 181, a downstream valve seat 182, a downstream valve ball 183, a downstream valve cover 19, a fixed valve pressing joint 21, an upper oil outlet joint 210, a sucker rod connecting port 211, an oil outlet 22, an upstream valve assembly 220, an upstream valve seat 221, an upper traveling valve ball 30, a large flow passage fixed valve assembly 31, a fixed valve seat 32, a fixed valve ball 33, a fixed valve cover 330, an inclined hole 331 and a guide rib.
Detailed Description
The invention is further explained below with reference to the drawings and examples.
All the orientations referred to in the present specification are based on the orientations shown in the drawings, and only represent relative positional relationships, not absolute positional relationships.
As shown in fig. 1, a suspended long plunger antiscale sand control oil well pump comprises: a short pump barrel 12 and a long plunger 14 positioned in the short pump barrel 12, wherein the short pump barrel 12 adopts a thickened pump barrel. The lower part of the short pump barrel 12 is connected with an anti-scale connecting pipe 16, the short pump barrel 12 and the anti-scale connecting pipe 16 are fixedly connected through a pump barrel centralizing joint 15, the inner diameter of the anti-scale connecting pipe 16 is slightly larger than that of the short pump barrel 12, and preferably, the inner diameter of the anti-scale connecting pipe 16 is 2-3 mm larger than that of the short pump barrel 12. The inner surface of the anti-scaling connecting pipe 16 is made of special nano materials with high wear resistance, corrosion resistance and no scaling, the inner surface of the anti-scaling connecting pipe 16 cannot be scaled in the oil extraction process, and the nano materials also have the advantages of strong adhesive force, convenience in processing, environmental friendliness and the like.
As shown in fig. 1, the length of the long plunger 14 is greater than the sum of the total length of the short pump barrel 12 and the scale prevention coupling pipe 16. The top of the long plunger 14 is connected with an upper traveling valve assembly 22 and an upper oil outlet joint 21 in sequence, because the length of the long plunger 14 is greater than the sum of the total length of the short pump cylinder 12 and the anti-scale connecting pipe 16, the upper traveling valve assembly 22 and the upper oil outlet joint 21 extend out of the short pump cylinder 12 all the time, the design reduces the friction area, thereby increasing the pump efficiency, and the upper oil outlet joint 21 extends out of the short pump cylinder 12, the overflow area of an oil outlet is increased, and the oil resistance is reduced. The upper traveling valve assembly 22 comprises an upper traveling valve seat 220 and an upper traveling valve ball 221, a sucker rod connecting port 210 is arranged at the top end of the upper oil outlet joint 21, an oil outlet 211 is arranged on the side face of the upper traveling valve seat, the oil outlet 211 is a left-spiral oil outlet, the oil flows spirally through the left-spiral oil outlet, gravel carrying is facilitated, and meanwhile the left-spiral oil outlet structure enables the upper oil outlet joint 21 and a sucker rod (not shown in the figure) to generate a screwing trend, so that tripping is prevented.
As shown in FIG. 1, an outer tube 11 is arranged outside the short pump barrel 12 and the anti-scale connecting tube 16, and a pump barrel centering sleeve 13 is arranged between the short pump barrel 12 and the outer tube 11. The outer pipe 11 is made of anticorrosive material. The lower ends of the outer pipe 11 and the anti-scale connecting pipe 16 are fixedly connected through a pump cylinder lower coupling 17, a through hole is formed in the middle of the pump cylinder lower coupling 17, and a lower movable valve assembly 18 can shuttle in the through hole. The outer pipe 11, the short pump barrel 12 and the anti-scale connecting pipe 16 form a sand settling channel, and gravel carried in the oil liquid flowing out from the upper oil outlet joint 21 can be settled in the sand settling channel.
As shown in fig. 1, the bottom of the long plunger 14 is connected to the downstream valve assembly 18, and the downstream valve assembly 18 includes a lower traveling valve seat 181, a lower traveling valve ball 182 seated on the lower traveling valve seat 181, and a downstream valve cover 183 for guiding the downstream valve ball 182.
As shown in fig. 1, a large flow passage fixed valve assembly 30 is connected below the pump barrel lower collar 17, and the large flow passage fixed valve assembly 30 includes a fixed valve seat 31, a fixed valve ball 32 seated on the fixed valve seat 31, and a fixed valve cover 33 guiding the fixed valve ball 32. A sand washing groove (not shown in the figure) is designed at the upper part of the fixed valve seat 31, sand grains on the upper part of the fixed valve seat 31 are prevented from being accumulated through the washing of oil, the problem that the fixed valve ball 32 and the fixed valve seat 31 are not sealed tightly and leakage occurs is solved, and therefore the pump efficiency is improved.
As shown in fig. 1, an oil passage is arranged in the middle of the fixed valve cover 33, the oil passage is in a petal-like structure, a guide rib 331 is formed at the junction between every two adjacent petals, the guide rib 331 encloses a guide passage together, the fixed valve ball 32 is located in the guide passage, and the guide passage plays a good role in guiding the fixed valve ball 32, so that the fixed valve ball can return quickly in an inclined well, and the pump efficiency is improved.
As shown in fig. 1, the upper end of the fixed valve housing 33 is provided with an inclined hole 330, and the inclined hole 330 corresponds to the oil passage, thereby ensuring a sufficient flow area. The lower end of the large flow passage fixed valve assembly 30 is fixedly connected with a fixed valve compression joint 19, and the top end of the outer tube 11 is connected with an oil tube coupling 10.
All the fittings of the valve cover are made of special high-strength stainless steel materials, so that the corrosion resistance of the whole pump is improved.
As shown in fig. 1 and fig. 2, the utility model discloses suspension type long plunger anti-scaling sand control oil well pump's work flow as follows:
first step, upstroke. The sucker rod is lifted upwards, the sucker rod drives the long plunger 14 to move upwards along the short pump barrel 12 and the anti-scale connecting pipe 16, the long plunger 14 and the short pump barrel 12 are in sealed friction, the sealing space is gradually increased along with the ascending of the long plunger 14, so that the pressure in the short pump barrel 12 is smaller than the external pressure, oil enters the large-flow-channel fixed valve assembly 30 from the fixed valve compression joint 19, the oil jacks up the fixed valve ball 32, the fixed valve ball 32 ascends along the fixed valve cover 33, and the oil enters the anti-scale connecting pipe 16 and the short pump barrel 12 from the position between the guide ribs 331.
The second step, the down stroke. The sucker rod is pressed down, the sucker rod drives the long plunger 14 to move downwards along the short pump barrel 12 and the anti-scale connecting pipe 16, the long plunger 14 and the short pump barrel 12 are in sealed friction, the sealing space is gradually reduced along with the downward movement of the long plunger 14, the lower movable valve assembly 18 is opened by oil liquid, the oil liquid enters the inside of the long plunger 14, then the upper movable valve assembly 22 is opened by the oil liquid, and the oil outlet 211 on the side face of the upper oil outlet joint 21 flows out. Gravel and the like carried in the oil are heavier and fall under the action of gravity to enter a sand setting channel.
The utility model discloses suspension type long plunger anti scale sand control oil-well pump adopts the long plunger structure, and at the oil pumping in-process, the pump barrel is whole cooperation friction all the time to avoid pump barrel scale deposit problem, adopt the suspension type structure simultaneously, pump barrel outside increases an outer tube, and the outer tube protects the pump barrel, makes pump barrel non-deformable, thereby has improved the life of pump barrel, makes the oil recovery cost reduce.
The present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes without creative labor from the above conception, and all the changes fall within the protection scope of the present invention.
Claims (9)
1. A suspended long-plunger antiscale sand-proof oil well pump comprises: the anti-scaling device comprises a short pump barrel and a long plunger positioned inside the short pump barrel, and is characterized in that an anti-scaling connecting pipe is connected to the lower portion of the short pump barrel, the length of the long plunger is larger than the sum of the total length of the short pump barrel and the anti-scaling connecting pipe, outer pipes are arranged outside the short pump barrel and the anti-scaling connecting pipe, and the lower ends of the outer pipes and the anti-scaling connecting pipe are fixedly connected.
2. The suspended long-plunger antiscale sand-control oil-well pump according to claim 1, wherein an upper traveling valve assembly and an upper oil outlet joint extending out of the short pump cylinder are sequentially connected to the top of the long plunger, the upper traveling valve assembly comprises an upper traveling valve seat and an upper traveling valve ball, a sucker rod connector is arranged at the top end of the upper oil outlet joint, an oil outlet is arranged on the side surface of the upper traveling valve assembly, and the oil outlet is a left-handed oil outlet.
3. The suspended long-plunger antiscale sand-control oil-well pump according to claim 2, wherein a downstream valve assembly is connected to the bottom of the long plunger, the downstream valve assembly comprises a downstream valve seat, a downstream valve ball seated on the downstream valve seat, and a downstream valve cover guiding the downstream valve ball.
4. The suspended long-plunger antiscaling and sand-preventing oil-well pump according to claim 1, wherein a pump cylinder centering sleeve is arranged between the short pump cylinder and the outer pipe.
5. The suspended long-plunger antiscale sand-control oil-well pump according to claim 3, wherein the lower ends of the outer tube and the antiscale connecting tube are fixedly connected through a pump cylinder lower coupling, a through hole is formed in the middle of the pump cylinder lower coupling, and the downstream valve assembly can shuttle in the through hole.
6. The suspended long-plunger antiscale sand-control oil-well pump according to claim 5, wherein a large flow passage fixed valve assembly is connected below the lower coupling of the pump barrel, and comprises a fixed valve seat, a fixed valve ball seated on the fixed valve seat and a fixed valve cover for guiding the fixed valve ball.
7. The suspended long-plunger antiscaling and sand-preventing oil-well pump according to claim 6, wherein an oil passage is arranged in the middle of the fixed valve cover, the oil passage is shaped like a petal, a guide rib is formed at a junction between every two adjacent petals, the guide ribs jointly enclose a guide passage, and the fixed valve ball is located in the guide passage.
8. The suspended long-plunger antiscaling and sand-preventing oil-well pump according to claim 7, wherein an inclined hole is formed in the upper end of the fixed valve cover, and the inclined hole corresponds to the oil passage.
9. The suspended long-plunger antiscale sand-control oil-well pump according to claim 6, wherein the lower end of the large-flow-channel standing valve assembly is fixedly connected with a fixed valve compression joint, and the top end of the outer tube is connected with a tubing coupling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022040348.7U CN213298230U (en) | 2020-09-17 | 2020-09-17 | Suspended long plunger antiscale sand-proof oil-well pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022040348.7U CN213298230U (en) | 2020-09-17 | 2020-09-17 | Suspended long plunger antiscale sand-proof oil-well pump |
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| Publication Number | Publication Date |
|---|---|
| CN213298230U true CN213298230U (en) | 2021-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022040348.7U Active CN213298230U (en) | 2020-09-17 | 2020-09-17 | Suspended long plunger antiscale sand-proof oil-well pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213298230U (en) |
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2020
- 2020-09-17 CN CN202022040348.7U patent/CN213298230U/en active Active
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