CN218953535U - Forced opening and closing rod type anti-corrosion oil pump - Google Patents
Forced opening and closing rod type anti-corrosion oil pump Download PDFInfo
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- CN218953535U CN218953535U CN202223064734.5U CN202223064734U CN218953535U CN 218953535 U CN218953535 U CN 218953535U CN 202223064734 U CN202223064734 U CN 202223064734U CN 218953535 U CN218953535 U CN 218953535U
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Abstract
The utility model provides a forced opening and closing rod type anti-corrosion oil pump which comprises a mechanical top locking and supporting assembly, a mechanical top locking and supporting joint, a plunger assembly, a pump cylinder and a fixed valve assembly, wherein the plunger assembly is positioned in the pump cylinder and is internally provided with a plurality of oil outlet valves, the upper part of the pump cylinder is connected with the mechanical top locking and supporting assembly, and the lower part of the pump cylinder is connected with the fixed valve assembly; the mechanical top locking support joint comprises an upper oil pipe coupling, a support pump seat and a lower oil pipe coupling, wherein the upper part of the upper oil pipe coupling is connected with an oil pipe, and the lower part of the upper oil pipe coupling is connected with the support pump seat, the lower oil pipe coupling and the oil pipe. The plunger assembly of the pump adopts a double-plunger structure, so that the leakage of the pump can be effectively reduced, and the pump efficiency is improved; the traveling valve adopts a mechanical opening type forced valve structure, so that the possibility of air lock and sand clamp is effectively reduced; the pump is suitable for the exploitation of crude oil in sand-containing and gas-containing highly-inclined wells or horizontal wells, and has the advantages of flexible opening and closing of ball valves, high pump efficiency, good sand prevention and gas prevention effects and strong bearing capacity.
Description
Technical Field
The utility model relates to the technical field of oil pumps, in particular to a forced opening and closing rod type anti-corrosion oil pump.
Background
At present, a forced opening and closing rod type pump mostly adopts a single plunger, and a fixed valve adopts a conventional structure. If the forced ring valve fails, the whole pump fails, and the reliability is low; the valve ball can not be used in a highly-inclined or horizontal well, and the fixed valve ball is easy to fall off, lag in closing and even not closing, so that the production is seriously influenced. The pump can solve the problems effectively, can improve the reliability of the pump, and has wider application range and application working condition.
Disclosure of Invention
The utility model mainly aims to provide a forced opening and closing rod type anti-corrosion oil pump, which solves the problems in the background technology.
In order to solve the technical problems, the utility model adopts the following technical scheme: the hydraulic pump comprises a mechanical top locking support assembly, a mechanical top locking support joint, a plunger assembly, a pump cylinder and a fixed valve assembly, wherein the plunger assembly is positioned in the pump cylinder, a plurality of oil outlet valves are arranged in the plunger assembly, the upper part of the pump cylinder is connected with the mechanical top locking support assembly, and the lower part of the pump cylinder is connected with the fixed valve assembly;
the mechanical top locking support joint comprises an upper oil pipe coupling, a support pump seat and a lower oil pipe coupling, wherein the upper part of the upper oil pipe coupling is connected with an oil pipe, and the lower part of the upper oil pipe coupling is connected with the support pump seat, the lower oil pipe coupling and the oil pipe.
In a preferred embodiment, the plunger assembly includes a sucker rod joint, a valve stem joint, a center rod, a short plunger, an annular valve seat, and an annular valve ball.
In the preferred scheme, the sucker rod is connected to sucker rod joint upper portion, and annular disk seat supports and leans on annular valve ball, and the stub upper portion is connected with plunger uide bushing, and annular disk seat is connected to the lower part, and the stub supports and leans on pump cylinder inner wall to slide.
In the preferred scheme, the upper part of the valve rod is connected with a sucker rod joint, the lower part of the valve rod is connected with a central rod joint at the upper part of a central rod through the valve rod joint, and the lower part of the central rod is connected with an annular valve ball;
the short plunger slides between the annular valve ball and the center rod joint.
In the preferred scheme, two groups of center rod joints, center rods and annular valve balls are connected in series below the valve rod, and the two groups are connected with the annular valve balls through the center rod joints;
plunger guide sleeves, short plungers and annular valve seats are arranged above the two groups of annular valve balls.
In a preferred embodiment, the stationary valve assembly comprises a stationary valve housing, a spring, an oil inlet valve, and a liquid inlet small screen.
In the preferred embodiment, the liquid inlet small sieve tube is connected to the bottom of the pump cylinder and is used for filtering larger impurities and foreign matters in the well.
The utility model provides a forced opening and closing rod type anti-corrosion oil pump, which has the beneficial effects that:
1. the plunger assembly of the pump adopts a double-plunger structure, so that the leakage of the pump can be effectively reduced, and the pump efficiency is improved;
2. the traveling valve adopts a mechanical opening type forced valve structure, and when the traveling valve works, the forced valve is driven to be opened or closed by a valve rod instead of being opened or closed by pressure difference, so that the traveling valve is opened and closed rapidly and reliably, the interference of gas can be effectively reduced, an air lock is prevented, the fullness of a pump is effectively improved, and meanwhile, the forced valve can reduce sand blocking of a ball valve to play a sand prevention role;
3. the fixed valve adopts a strong closing structure with a return spring, the upper part of the fixed valve is designed to be acted by the elastic force of the spring, the spring or the spring is always attached to the surface of the valve ball, the pretightening force of the spring is larger than the weight of the valve ball, so that the valve ball can be reset under any well inclination angle, when the ball valve is closed, the valve ball can be timely seated on the valve seat under the action of the spring force, and the phenomena of falling off, closing lag, even non-closing and the like of the valve ball under the influence of gravity in a highly-inclined well or a horizontal well are reduced;
4. because the top fixed rod type pump structure is adopted, the oil pump can lift and lower the oil well along with the sucker rod, the oil pump can not move the oil pipe column when overhauling the oil pump, the operation of lifting and lowering the oil pump is convenient, the oil can be automatically drained and the well can be washed forward when lifting the well, and the operation cost is low;
5. pumps with serial pump diameters can be simultaneously adapted to the same pump seat, so that integrated operation is realized, the process cost is reduced, the well lifting and descending operations are simple, time and labor are saved, and the working efficiency is improved;
6. the key parts of the series of products such as the plunger, the pump barrel, the valve housing, the ball valve and the like are all made of materials with strong corrosion resistance and excellent mechanical properties, have excellent wear resistance and corrosion resistance, are suitable for being used in deep wells containing H2S, CO2 and brine corrosion mediums, and all the parts adopt mature heat treatment and surface treatment processes, so that the wear resistance and corrosion resistance are enhanced, the reliability of the pump is improved, and the service life of the pump is prolonged;
7. the pump is designed with the special protection piece, so that the working surfaces such as the sealing surface, the threaded surface and the like can be well protected in various links such as test, transportation, field installation and the like, and the installation effect is guaranteed;
in combination, the pump is suitable for oil exploitation in sand-containing and gas-containing highly-inclined wells or horizontal wells, and has the characteristics of flexible opening and closing of ball valves, high pump efficiency, good sand prevention and gas prevention effects, strong bearing capacity, long service life and the like.
Drawings
The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:
FIG. 1 is a front cross-sectional view of the overall structure of the present utility model;
FIG. 2 is an up-stroke schematic of the present utility model;
FIG. 3 is a down stroke schematic of the present utility model;
in the figure: a valve rod guide sleeve 1; an upper tubing collar 2; a support pump base 3; a mechanical top locking support assembly 4; a lower tubing collar 5; a plunger guide sleeve 6; a pump cylinder 7; a fixed valve cover 8; a spring 9; an oil inlet valve 10; a liquid inlet small sieve tube 11; sucker rod joint 12; a valve stem 13; a valve stem union 14; a center rod joint 15; a central rod 16; a short plunger 17; an annular valve seat 18; an annular valve ball 19; and an oil inlet chamber 20.
Detailed Description
Example 1
As shown in fig. 1-3, the forced opening and closing rod type anti-corrosion oil pump comprises a mechanical top locking support assembly 4, a mechanical top locking support joint, a plunger assembly, a pump cylinder 7 and a fixed valve assembly, wherein the plunger assembly is positioned in the pump cylinder 7, a plurality of oil outlet valves are arranged in the plunger assembly, the upper part of the pump cylinder 7 is connected with the mechanical top locking support assembly 4, and the lower part of the pump cylinder is connected with the fixed valve assembly;
the mechanical top locking support joint comprises an upper oil pipe coupling 2, a support pump seat 3 and a lower oil pipe coupling 5, wherein the upper part of the upper oil pipe coupling 2 is connected with an oil pipe, and the lower part is connected with the support pump seat 3, the lower oil pipe coupling 5 and the oil pipe.
Preferably, the plunger assembly includes a sucker rod joint 12, a valve stem 13, a valve stem joint 14, a center rod joint 15, a center rod 16, a short plunger 17, an annular valve seat 18, and an annular valve ball 19.
In the preferred scheme, the upper part of the sucker rod joint 12 is connected with a sucker rod, an annular valve seat 18 is abutted against an annular valve ball 19, the upper part of a short plunger 17 is connected with a plunger guide sleeve 6, the lower part of the short plunger 17 is connected with the annular valve seat 18, and the short plunger 17 is abutted against the inner wall of the pump barrel 7 to slide. With this structure, the annular valve seat 18 and the annular valve ball 19 are oil outlet valves.
In the preferred scheme, the upper part of the valve rod 13 is connected with the sucker rod joint 12, the lower part is connected with the central rod joint 15 at the upper part of the central rod 16 through the valve rod joint 14, and the lower part of the central rod 16 is connected with the annular valve ball 19;
the short plunger 17 slides between the annular valve ball 19 and the center rod joint 15.
In the preferred scheme, two groups of center rod joints 15, center rods 16 and annular valve balls 19 are connected in series below the valve rod 13, and the two groups are connected with the annular valve balls 19 through the center rod joints 15;
the plunger guide sleeve 6, the short plunger 17 and the annular valve seat 18 are arranged above the annular valve balls 19 of the two groups. With the structure, the plunger assembly adopts a double-plunger structure, so that the leakage of the pump can be effectively reduced, and the pump efficiency is improved.
Preferably, the fixed valve assembly comprises a fixed valve housing 8, a spring 9, an oil inlet valve 10 and a liquid inlet small sieve tube 11. From this structure, the fixed valve assembly adopts the strong structure of closing of taking reset spring, and fixed valve upper portion has been designed and has been received spring elasticity effect, and the spring or laminate with the valve ball surface all the time, and the pretightning force of spring is greater than the weight of valve ball, makes its under arbitrary well inclination angle, and the valve ball can both reset, when the ball valve is closed, under the effect of spring force, the valve ball can in time be seated on the disk seat, has reduced in highly deviated well or horizontal well that the valve ball appears the phenomenon such as fall, close hysteresis, even do not close by gravity influence.
In the preferred embodiment, a small liquid feed screen 11 is attached to the bottom of the pump cylinder 7 for filtering larger impurities and foreign matter from the well.
The key parts of the series of products, such as the plunger, the pump cylinder 7, the fixed valve cover 8, the oil inlet valve 10 and the like, are all made of materials with strong corrosion resistance and excellent mechanical properties, have excellent wear-resistant and corrosion-resistant properties, are suitable for being used in deep wells containing H2S, CO2 and brine corrosion mediums, and all parts adopt mature heat treatment and surface treatment processes, so that the wear-resistant and corrosion-resistant properties are enhanced, and the reliability and the service life of the pump are improved.
The upper part of the sucker rod joint 12 is connected with a sucker rod, when the ground pumping unit is in an upward stroke, the pumping unit drives the sucker rod, the valve rod 13, the center rod 16, the short plunger 17, the annular valve seat 18 and the annular valve ball 19 to move upwards, the upper annular oil outlet valve and the lower annular oil outlet valve are closed, the volume of the oil inlet cavity 20 is increased, the pressure is reduced, and the oil inlet valve is opened.
When the ground pumping unit is in the down stroke, the sucker rod, the valve rod 13, the center rod 16, the short plunger 17, the annular valve seat 18 and the annular valve ball 19 are downwards moved, the volume of the oil inlet cavity 20 is reduced, the pressure is increased, the oil inlet valve is closed, the upper oil outlet valve and the lower oil outlet valve are opened, at the moment, the external pressure of the pump is low, crude oil is pumped to the ground through the upper oil outlet valve and the lower oil outlet valve, the upper oil outlet valve and the lower oil outlet valve are forcedly opened and closed under the action of the pulling force of the sucker rod, and the opening and closing hysteresis of the valve ball caused by thick oil, well inclination and airlock can be effectively reduced.
And the oil pump is put into a design position in a lower oil well of the oil pump, oil pipes are connected to two ends of an upper oil pipe coupling and a lower oil pipe coupling, and a tail pipe is connected to the lower part of the liquid inlet small sieve tube 11. The upper end of the plunger assembly is connected with the sucker rod, and the plunger assembly is driven by the sucker rod to reciprocate up and down in the pump cylinder assembly.
Example 2
As shown in fig. 1 to 3, further description is given in connection with example 1: after the oil pump seat is sealed at the position of the supporting pump seat 3 on the oil pipe, the plunger assembly moves together with the oil pumping rod;
during the up stroke, the valve rod 13 drives the plunger to move upwards, the plunger pulls the annular valve ball 19 to abut against the annular valve seat 18 so as to forcibly close the oil outlet valve, the liquid column at the upper part of the plunger is driven by the plunger assembly to be discharged out of the pump cylinder 7, meanwhile, the volume of the oil inlet cavity 20 is increased, the pressure is reduced, the fixed valve is opened under the action of sinking pressure, and oil enters the oil inlet cavity 20 through the fixed valve;
during the down stroke, the valve rod 13 drives the plunger to move downwards, the plunger pushes the annular valve ball 19 to separate from the annular valve seat 18, so that the oil outlet valve is forcedly opened, the volume of the oil inlet cavity 20 is reduced, the pressure is increased, the fixed valve is closed under the action of the cavity pressure, and liquid in the oil inlet cavity 20 enters an oil pipe above the plunger through the oil outlet valve.
The above embodiments are only preferred embodiments of the present utility model, and should not be construed as limiting the present utility model, and the scope of the present utility model should be defined by the claims, including the equivalents of the technical features in the claims. I.e., equivalent replacement modifications within the scope of this utility model are also within the scope of the utility model.
Claims (7)
1. A forced opening and closing rod type anti-corrosion oil pump is characterized in that: the hydraulic pump comprises a mechanical top locking support assembly (4), a mechanical top locking support joint, a plunger assembly, a pump cylinder (7) and a fixed valve assembly, wherein the plunger assembly is positioned in the pump cylinder (7), a plurality of oil outlet valves are arranged in the plunger assembly, the upper part of the pump cylinder (7) is connected with the mechanical top locking support assembly (4), and the lower part of the pump cylinder is connected with the fixed valve assembly;
the mechanical top locking support joint comprises an upper oil pipe coupling (2), a support pump seat (3) and a lower oil pipe coupling (5), wherein the upper part of the upper oil pipe coupling (2) is connected with an oil pipe, and the lower part of the upper oil pipe coupling is connected with the support pump seat (3), the lower oil pipe coupling (5) and the oil pipe.
2. The forced opening and closing rod type anti-corrosion oil pump according to claim 1, wherein: the plunger assembly comprises a sucker rod joint (12), a valve rod (13), a valve rod joint (14), a central rod joint (15), a central rod (16), a short plunger (17), an annular valve seat (18) and an annular valve ball (19).
3. The forced opening and closing rod type anti-corrosion oil pump according to claim 2, wherein: the upper part of the sucker rod joint (12) is connected with a sucker rod, the annular valve seat (18) is abutted against the annular valve ball (19), the upper part of the short plunger (17) is connected with the plunger guide sleeve (6), the lower part is connected with the annular valve seat (18), and the short plunger (17) is abutted against the inner wall of the pump cylinder (7) to slide.
4. A forced opening and closing rod type anti-corrosive oil pump according to claim 3, characterized in that: the upper part of the valve rod (13) is connected with the sucker rod joint (12), the lower part of the valve rod is connected with a central rod joint (15) at the upper part of the central rod (16) through a valve rod joint (14), and the lower part of the central rod (16) is connected with an annular valve ball (19);
a short plunger (17) is slidably positioned between the annular valve ball (19) and the center rod fitting (15).
5. The forced opening and closing rod type anti-corrosion oil pump according to claim 4, wherein: two groups of center rod joints (15), center rods (16) and annular valve balls (19) are connected in series below the valve rod (13), and the two groups are connected with the annular valve balls (19) through the center rod joints (15);
plunger guide sleeves (6), short plungers (17) and annular valve seats (18) are arranged above the annular valve balls (19) of the two groups.
6. The forced opening and closing rod type anti-corrosion oil pump according to claim 1, wherein: the fixed valve assembly comprises a fixed valve cover (8), a spring (9), an oil inlet valve (10) and a liquid inlet small sieve tube (11).
7. The forced opening and closing rod type anti-corrosion oil pump according to claim 6, wherein: the liquid inlet small sieve tube (11) is connected to the bottom of the pump cylinder (7) and is used for filtering larger impurities and foreign matters in the well.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223064734.5U CN218953535U (en) | 2022-11-18 | 2022-11-18 | Forced opening and closing rod type anti-corrosion oil pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223064734.5U CN218953535U (en) | 2022-11-18 | 2022-11-18 | Forced opening and closing rod type anti-corrosion oil pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218953535U true CN218953535U (en) | 2023-05-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223064734.5U Active CN218953535U (en) | 2022-11-18 | 2022-11-18 | Forced opening and closing rod type anti-corrosion oil pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218953535U (en) |
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2022
- 2022-11-18 CN CN202223064734.5U patent/CN218953535U/en active Active
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