CN211397844U - Hydraulic feedback oil well pump for shallow horizontal well - Google Patents
Hydraulic feedback oil well pump for shallow horizontal well Download PDFInfo
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- CN211397844U CN211397844U CN201921907655.1U CN201921907655U CN211397844U CN 211397844 U CN211397844 U CN 211397844U CN 201921907655 U CN201921907655 U CN 201921907655U CN 211397844 U CN211397844 U CN 211397844U
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Abstract
The utility model relates to a shallow layer horizontal well is with oil recovery device of hydraulic feedback oil-well pump. A hydraulic feedback oil well pump for a shallow horizontal well comprises an upper pump cylinder and a lower pump cylinder which are connected with each other through a pump cylinder adapter and a hollow connecting rod; the upper pump cylinder is connected with an upper rotating joint, and the lower pump cylinder is connected with a lower rotating joint; the upper pump cylinder is internally and movably provided with an upper plunger and an oil outlet valve assembly which are connected with each other, and the lower pump cylinder is internally and movably provided with a lower plunger and an oil inlet valve assembly which are connected with each other; and channels communicated with the hollow connecting rod are arranged in the upper plunger and the lower plunger. The utility model discloses a principle of lower stroke imbibition, upstroke flowing back for the delivery valve body is closed during the lower stroke, and the liquid column gravity on oil-well pump upper portion is whole to be acted on the last plunger, for the plunger provides hydraulic feedback power down, has increased the down power of plunger, can fine solve the problem of the down difficulty of plunger when using.
Description
Technical Field
The utility model relates to a shallow layer horizontal well is with oil recovery device of hydraulic feedback oil-well pump.
Background
With the increasing demand of petroleum, the exploration and development of low-permeability and ultra-low-permeability oil reservoirs are paid more and more attention, and a large number of oil reservoirs enter the exploitation stage. When such oil reservoirs are exploited, a horizontal well is mainly adopted, the liquid production amount at the initial stage of production is considerable, but the liquid production amount is reduced rapidly, the liquid production amount of the oil well is small when the oil reservoir enters the middle and later stages, and when a three-pumping system consisting of an oil pumping unit, an oil pumping rod and an oil pumping pump is adopted for oil extraction, the oil pumping pump needs to be put into an inclined well section or a horizontal section. Especially shallow oil deposit, exposed many difficult problems of solving when using ordinary oil-well pump, such as valve closure untight, plunger down difficulty etc. lead to oil well operation frequently, oil recovery cost height etc..
In order to achieve sustainable development of oil fields, improve comprehensive recovery efficiency of oil fields and achieve high-efficiency and energy-saving industrial targets, new oil extraction devices suitable for shallow oil reservoirs are researched and developed, and international advanced lifting technology is introduced and popularized to become a struggle for researchers. This patent adopts hydraulic feedback principle to provide down power of sucker rod plunger and solves down difficulty, adopts direction and pressure spring reset method to solve the valve closure not tight, comes the research and development hydraulic feedback oil-well pump for shallow layer horizontal well, satisfies the oil field production demand.
Disclosure of Invention
The utility model discloses aim at to have the down difficulty of plunger, the not tight defect of valve closure to the used pump of oil recovery technology when shallow oil reservoir horizontal well development, provide one kind and can produce hydraulic feedback when the lower stroke, increase the down power of plunger, adopt direction and pressure spring reset method to guarantee that the valve is closed tight simultaneously.
The technical scheme of the utility model lies in:
a hydraulic feedback oil well pump for a shallow horizontal well comprises an upper pump cylinder and a lower pump cylinder which are connected with each other through a pump cylinder adapter and a hollow connecting rod; the upper pump cylinder is connected with an upper rotating joint, and the lower pump cylinder is connected with a lower rotating joint; the upper pump cylinder is internally and movably provided with an upper plunger and an oil outlet valve assembly which are connected with each other, and the lower pump cylinder is internally and movably provided with a lower plunger and an oil inlet valve assembly which are connected with each other; and channels communicated with the hollow connecting rod are arranged in the upper plunger and the lower plunger.
The oil outlet valve assembly comprises an oil outlet valve cover, an oil outlet valve guide and an oil outlet valve seat which are sequentially arranged from top to bottom; the oil outlet valve guide is fixed between the oil outlet valve cover and the oil outlet valve seat in a T shape; an oil outlet valve pressure spring is wound on the T-shaped longitudinal axis guided by the oil outlet valve; the inner bottom surface of the oil outlet valve seat is fixedly provided with an oil outlet valve body; an oil outlet cone valve is arranged on the oil outlet valve body in a sitting mode, the upper portion of the oil outlet cone valve is sleeved on a T-shaped longitudinal axis guided by the oil outlet valve and pressed by a pressure spring of the oil outlet valve; the bottom end of the oil outlet valve seat is connected with a channel communicated with the hollow connecting rod.
The oil inlet valve assembly comprises an oil inlet valve cover, an oil inlet valve guide and an oil inlet valve seat which are sequentially arranged from top to bottom; the oil inlet valve is fixed between the oil inlet valve cover and the oil inlet valve seat in a T-shaped guide manner; an oil inlet valve pressure spring is wound on the T-shaped longitudinal shaft guided by the oil inlet valve; an oil inlet valve body is fixedly arranged on the inner bottom surface of the oil inlet valve seat; an oil inlet cone valve is arranged on the upper seat of the oil inlet valve body, and the upper part of the oil inlet cone valve is sleeved on a T-shaped longitudinal axis guided by the oil inlet valve and pressed by a pressure spring of the oil inlet valve; the top end of the oil inlet valve bonnet is connected with a channel communicated with the hollow connecting rod.
The lower end of the upper pump cylinder and the upper end of the lower pump cylinder are respectively in threaded connection with the pump cylinder adapter.
The internal surface of pump barrel adapter is equipped with the sealing member, the sealing member forms closely cooperating with hollow connecting rod and pump barrel adapter.
The oil outlet valve further comprises a pull rod, and the pull rod is connected with the oil outlet valve cover.
The threads are pipe threads.
The technical effects of the utility model reside in that:
the oil inlet valve assembly and the oil outlet valve assembly of the utility model adopt a guiding and pressure spring resetting method, are not influenced by gravity no matter in a vertical well or a horizontal well, ensure that the oil inlet valve assembly and the oil outlet valve assembly can be closed in time and ensure tight closing, solve the problem of untight closing when in application, reduce the pump leakage and improve the efficiency; by adopting the principle of lower stroke liquid suction and upper stroke liquid discharge, the oil outlet valve body is closed during the lower stroke, and the liquid column gravity on the upper part of the oil well pump acts on the upper plunger completely, thereby providing hydraulic feedback power for the downward movement of the plunger, increasing the downward movement power of the plunger and well solving the problem of difficult downward movement of the plunger during use.
Drawings
Fig. 1 is a schematic structural diagram of a hydraulic feedback oil pump for a shallow horizontal well according to the present invention.
Reference numerals: 1-pull rod, 2-upper rotary joint, 3-oil outlet valve bonnet, 4-oil outlet valve guide, 5-oil outlet valve pressure spring, 6-oil outlet cone valve, 7-oil outlet valve body, 8-oil outlet valve seat, 9-upper pump barrel, 10-upper plunger, 11-hollow connecting rod, 12-sealing piece, 13-pump barrel adapter, 14-lower pump barrel, 15-lower plunger, 16-oil inlet valve bonnet, 17-oil inlet valve guide, 18-oil inlet valve pressure spring, 19-oil inlet cone valve, 20-oil inlet valve body, 21-oil inlet valve seat and 22-lower rotary joint.
Detailed Description
Example 1
A hydraulic feedback oil well pump for shallow horizontal wells comprises an upper pump barrel 9 and a lower pump barrel 14 which are connected with each other through a pump barrel adapter 13 and a hollow connecting rod 11; the upper pump barrel 9 is connected with an upper joint 2, and the lower pump barrel 14 is connected with a lower joint 22; an upper plunger 10 and an oil outlet valve assembly which are connected with each other are movably arranged in the upper pump barrel 9, and a lower plunger 15 and an oil inlet valve assembly which are connected with each other are movably arranged in the lower pump barrel 14; and channels communicated with the hollow connecting rod 11 are arranged in the upper plunger 10 and the lower plunger 15.
Example 2
On the basis of the embodiment 1, the oil outlet valve assembly comprises an oil outlet valve cover 3, an oil outlet valve guide 4 and an oil outlet valve seat 8 which are sequentially arranged from top to bottom; the oil outlet valve guide 4 is fixed between the oil outlet valve cover 3 and the oil outlet valve seat 8 in a T shape; an oil outlet valve pressure spring 5 is wound on the T-shaped longitudinal axis of the oil outlet valve guide 4; an oil outlet valve body 7 is fixedly arranged on the inner bottom surface of the oil outlet valve seat 8; an oil outlet cone valve 6 is arranged on the oil outlet valve body 7 in a sitting mode, the upper portion of the oil outlet cone valve 6 is sleeved on a T-shaped longitudinal axis of the oil outlet valve guide 4 and is pressed through an oil outlet valve pressure spring 5; the bottom end of the oil outlet valve seat 8 is connected with a channel communicated with the hollow connecting rod 11. The oil inlet valve assembly comprises an oil inlet valve cover 16, an oil inlet valve guide 17 and an oil inlet valve seat 21 which are sequentially arranged from top to bottom; the oil inlet valve guide 17 is fixed between the oil inlet valve cover 16 and the oil inlet valve seat 21 in a T shape; an oil inlet valve pressure spring 18 is wound on the T-shaped longitudinal axis of the oil inlet valve guide 17; an oil inlet valve body 20 is fixedly arranged on the inner bottom surface of the oil inlet valve seat 21; an oil inlet cone valve 19 is arranged on the upper seat of the oil inlet valve body 20, and the upper part of the oil inlet cone valve 19 is sleeved on a T-shaped longitudinal axis of the oil inlet valve guide 17 and pressed by an oil inlet valve pressure spring 18; the top end of the oil inlet valve cover 16 is connected with a channel communicated with the hollow connecting rod 11.
Example 3
On the basis of embodiment 2, the lower end of the upper pump barrel 9 and the upper end of the lower pump barrel 14 are respectively in threaded connection with the pump barrel adapter 13. The internal surface of pump barrel adapter 13 is equipped with sealing member 12, sealing member 12 forms closely cooperating with hollow connecting rod 11 and pump barrel adapter 13. Still include the pull rod 1, pull rod 1 is connected with delivery valve bonnet 3. The threads are pipe threads.
The working process of the embodiment is as follows: during the lower stroke, the oil outlet valve assembly, the upper plunger 10, the hollow connecting rod 11, the lower plunger 15 and the oil inlet valve assembly move downwards; the space formed by the lower plunger 15, the hollow connecting rod 11 and the lower pump cylinder 14 is gradually increased, the pressure is reduced, under the action of pressure difference, the oil inlet cone valve 19 compresses the oil inlet valve pressure spring 18 and moves upwards on the oil inlet valve guide 17, the oil inlet cone valve 19 is separated from the oil inlet valve body 20 to form an oil inlet channel, and external liquid enters until the bottom dead center to finish liquid suction; at the moment, the oil inlet cone valve 19 is reset under the action of the oil inlet valve pressure spring 18, and the oil inlet channel is closed.
During the upward stroke, the oil outlet valve assembly, the upper plunger 10, the hollow connecting rod 11, the lower plunger 15 and the oil inlet valve assembly move upwards in the pump cylinder; the space formed by the lower plunger 15, the hollow connecting rod 11 and the lower pump cylinder 14 is gradually reduced, the pressure is increased, the oil outlet cone valve 6 compresses the oil outlet valve pressure spring 5 under the action of the pressure, the oil outlet cone valve moves upwards on the oil outlet valve guide 4, the oil outlet cone valve 6 is separated from the oil outlet valve body 7 to form an oil discharge channel, and liquid in the pump is discharged until the upper dead point to finish liquid discharge; at the moment, the oil outlet cone valve 6 is reset under the action of the oil inlet valve pressure spring 18, and the liquid drainage channel is closed. The working principle is that liquid is absorbed in the lower stroke and discharged in the upper stroke.
Claims (7)
1. A hydraulic feedback oil well pump for shallow horizontal wells comprises an upper pump cylinder (9) and a lower pump cylinder (14) which are connected with each other through a pump cylinder adapter (13) and a hollow connecting rod (11); the upper pump cylinder (9) is connected with an upper joint (2), and the lower pump cylinder (14) is connected with a lower joint (22); the method is characterized in that: an upper plunger (10) and an oil outlet valve assembly which are connected with each other are movably arranged in the upper pump barrel (9), and a lower plunger (15) and an oil inlet valve assembly which are connected with each other are movably arranged in the lower pump barrel (14); and channels communicated with the hollow connecting rod (11) are arranged in the upper plunger (10) and the lower plunger (15).
2. The hydraulic feedback oil-well pump for the shallow horizontal well according to claim 1, characterized in that: the oil outlet valve assembly comprises an oil outlet valve cover (3), an oil outlet valve guide (4) and an oil outlet valve seat (8) which are sequentially arranged from top to bottom; the oil outlet valve guide (4) is fixed between the oil outlet valve cover (3) and the oil outlet valve seat (8) in a T shape; an oil outlet valve pressure spring (5) is wound on a T-shaped longitudinal shaft of the oil outlet valve guide (4); an oil outlet valve body (7) is fixedly arranged on the inner bottom surface of the oil outlet valve seat (8); an oil outlet cone valve (6) is arranged on the oil outlet valve body (7) in a sitting mode, the upper portion of the oil outlet cone valve (6) is sleeved on a T-shaped longitudinal axis of the oil outlet valve guide (4) and pressed through an oil outlet valve pressure spring (5); the bottom end of the oil outlet valve seat (8) is connected with a channel communicated with the hollow connecting rod (11).
3. The hydraulic feedback oil-well pump for the shallow horizontal well according to claim 2, characterized in that: the oil inlet valve assembly comprises an oil inlet valve cover (16), an oil inlet valve guide (17) and an oil inlet valve seat (21) which are sequentially arranged from top to bottom; the oil inlet valve guide (17) is fixed between the oil inlet valve cover (16) and the oil inlet valve seat (21) in a T shape; an oil inlet valve pressure spring (18) is wound on a T-shaped longitudinal shaft of the oil inlet valve guide (17); an oil inlet valve body (20) is fixedly arranged on the inner bottom surface of the oil inlet valve seat (21); an oil inlet cone valve (19) is arranged on the upper seat of the oil inlet valve body (20), and the upper part of the oil inlet cone valve (19) is sleeved on a T-shaped longitudinal axis of the oil inlet valve guide (17) and pressed by an oil inlet valve pressure spring (18); the top end of the oil inlet valve cover (16) is connected with a through channel of the hollow connecting rod (11).
4. The hydraulic feedback oil-well pump for the shallow horizontal well according to claim 3, characterized in that: the lower end of the upper pump barrel (9) and the upper end of the lower pump barrel (14) are respectively in threaded connection with the pump barrel adapter (13).
5. The hydraulic feedback oil-well pump for the shallow horizontal well according to claim 4, characterized in that: the internal surface of pump barrel adapter (13) is equipped with sealing member (12), sealing member (12) and hollow connecting rod (11) and pump barrel adapter (13) form closely to cooperate.
6. The hydraulic feedback oil-well pump for the shallow horizontal well according to claim 5, characterized in that: still include pull rod (1), pull rod (1) are connected with delivery valve bonnet (3).
7. The hydraulic feedback oil-well pump for the shallow horizontal well according to claim 6, characterized in that: the threads are pipe threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921907655.1U CN211397844U (en) | 2019-11-07 | 2019-11-07 | Hydraulic feedback oil well pump for shallow horizontal well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921907655.1U CN211397844U (en) | 2019-11-07 | 2019-11-07 | Hydraulic feedback oil well pump for shallow horizontal well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211397844U true CN211397844U (en) | 2020-09-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921907655.1U Active CN211397844U (en) | 2019-11-07 | 2019-11-07 | Hydraulic feedback oil well pump for shallow horizontal well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211397844U (en) |
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2019
- 2019-11-07 CN CN201921907655.1U patent/CN211397844U/en active Active
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