CN112196779A - Double-acting oil well pump - Google Patents
Double-acting oil well pump Download PDFInfo
- Publication number
- CN112196779A CN112196779A CN202010950192.8A CN202010950192A CN112196779A CN 112196779 A CN112196779 A CN 112196779A CN 202010950192 A CN202010950192 A CN 202010950192A CN 112196779 A CN112196779 A CN 112196779A
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- China
- Prior art keywords
- oil outlet
- valve cover
- outlet valve
- inlet valve
- oil
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B47/00—Pumps or pumping installations specially adapted for raising fluids from great depths, e.g. well pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
- F04B53/1002—Ball valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
- F04B53/12—Valves; Arrangement of valves arranged in or on pistons
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
Abstract
The invention relates to a double-acting oil well pump. The problem that current conventional oil-well pump discharge capacity is low has mainly been solved. The method is characterized in that: the upper joint is connected with an upper oil inlet valve cover, an upper oil inlet valve seat is arranged in an annular hole formed in the lower part of the upper oil inlet valve cover, and the lower end of the upper oil inlet valve cover is connected with an upper oil inlet valve seat pressing cap in a threaded manner; the bottom end of the upper oil inlet valve cover is connected with an outer connecting sleeve, and the lower end of the outer connecting sleeve is connected with a pump barrel connector; an oil outlet joint is arranged in the upper joint, and an opening is formed in the middle of the oil outlet joint; the lower end of the oil outlet joint is connected with an upper hollow pull rod, the upper hollow pull rod is connected with an inner connecting sleeve, an upper oil outlet valve cover is welded inside the inner connecting sleeve, and the lower end of the upper oil outlet valve cover is connected with an upper oil outlet valve cover joint; an oil outlet valve seat is arranged in the upper oil outlet valve cover; the inner connecting sleeve is connected with the lower hollow pull rod, and the lower end of the lower hollow pull rod is connected with the middle oil outlet valve cover through a screw thread. Compared with the common oil well pump, the double-acting oil well pump can greatly improve the single-well yield and meet the requirement of high yield of an oil well.
Description
Technical Field
The invention relates to an underground tool used in the field of oil extraction in oil fields, in particular to a double-acting oil well pump.
Background
At present, in the later stage of high water content in an oil field, the liquid production capacity of an oil well needs to be improved for keeping high and stable yield, but the conventional oil well pump used at present only completes one oil absorption and oil discharge action in one reciprocating stroke, and the pump displacement is low, so that the requirement of high yield of the oil well cannot be met.
Disclosure of Invention
The invention aims to solve the technical problem that the prior conventional oil well pump in the background technology has low discharge capacity and cannot meet the requirement of high yield of an oil well, and provides a double-acting oil well pump which can finish oil suction and oil discharge twice in one reciprocating stroke, greatly improve the yield of a single well compared with the common oil well pump and meet the requirement of high yield of the oil well.
The invention can solve the problems by the following technical scheme: the double-acting oil well pump comprises an upper connector, an upper oil inlet valve cover, a middle oil outlet valve cover and a lower oil outlet valve cover, wherein the upper connector is connected with the upper oil inlet valve cover in a threaded manner, an upper oil inlet valve seat is arranged in a ring hole formed in the lower part of the upper oil inlet valve cover, the upper part of the upper oil inlet valve seat is positioned by a shoulder in the hole of the upper oil inlet valve cover, the lower end of the upper oil inlet valve cover is connected with an upper oil inlet valve seat pressing cap in a threaded manner, the upper oil inlet valve seat pressing cap is abutted against the upper oil inlet valve seat, and an upper oil inlet valve ball is arranged on the upper part of the upper oil inlet valve seat; the external thread at the bottom end of the upper oil inlet valve cover is connected with the shoulder at the upper end of the external connecting sleeve, the lower end of the external connecting sleeve is connected with the pump barrel joint in a threaded manner, the lower end of the pump barrel joint is connected with the pump barrel in a threaded manner, the lower end of the pump barrel is connected with the pump barrel coupling in an external thread manner, a bushing is arranged in the pump barrel, the lower end of the pump barrel coupling is connected with the thread of the lower oil inlet valve cover in a threaded manner, and the lower part of the lower; a lower oil inlet valve seat is arranged in the lower oil inlet valve cover, and a lower oil inlet valve ball is arranged on the lower oil inlet valve seat; an oil outlet joint is arranged in the upper joint, and an opening is formed in the middle of the oil outlet joint; the external thread at the lower end of the oil outlet joint is connected with an upper hollow pull rod, the external circular bead thread at the lower end of the upper hollow pull rod is connected with an inner connecting sleeve, an oil outlet valve cover is welded inside the inner connecting sleeve, and the thread at the lower end of the upper oil outlet valve cover is connected with an upper oil outlet valve cover joint; an oil outlet valve seat is arranged in the upper oil outlet valve cover; an oil outlet valve ball is arranged at the upper part of the oil outlet valve seat, the lower end of the inner connecting sleeve is connected with a lower hollow pull rod through internal threads, the lower end of the lower hollow pull rod is connected with a middle oil outlet valve cover through screw threads, and the lower end of the middle oil outlet valve cover is connected with a middle oil outlet valve cover connector through screw threads; an oil outlet valve seat is arranged in the middle oil outlet valve cover, and an oil outlet valve ball is arranged at the upper part of the oil outlet valve seat; the lower end of the middle oil outlet valve cover joint is in threaded connection with the piston, the lower end of the piston is in threaded connection with the lower oil outlet valve cover, and the lower end of the lower oil outlet valve cover is in threaded connection with the lower oil outlet valve cover joint; the lower oil outlet valve cover is internally provided with an oil outlet valve seat, and the upper part of the oil outlet valve seat is provided with an oil outlet valve ball.
Compared with the background technology, the invention has the following beneficial effects: the double-acting oil well pump is mainly used in the oil pumping production of an oil pumping well, has simple structure and convenient processing, can greatly improve the yield of a single well compared with the common oil well pump, and can meet the requirement of high yield of an oil well. The oil suction and oil discharge actions can be completed twice in one reciprocating stroke, the single-well yield can be greatly improved compared with that of a common oil well pump, and the theoretical discharge capacity is increased by about 62.7%; can meet the requirement of high yield of oil wells.
Drawings
Fig. 1 is a schematic structural diagram (including an upper half a and a lower half b) of the present invention.
In the figure: 1 an upper joint, 2 an oil outlet joint, 3 a packing, 4 an upper oil inlet valve cover, 5 an upper hollow pull rod, 6 an upper oil inlet valve ball, 7 an upper oil inlet valve seat, 8 an upper oil inlet valve seat press cap, 9 an outer connecting sleeve, 10 an inner connecting sleeve, 11 an upper oil outlet valve cover, 12 an oil outlet valve ball, 13 an oil outlet valve seat A, 14 an upper oil outlet valve cover joint, 15 a lower hollow pull rod, 16 a pump barrel joint, 17 a middle oil outlet valve cover, 18 a middle oil outlet valve cover joint, 19 a lining, 20 a piston, 21 a pump barrel, 22 a lower oil outlet valve cover, 23 a lower oil outlet valve cover joint, 24 a pump barrel coupling, 25 a lower oil inlet valve cover, 26 an auxiliary valve ball, 27 a lower oil inlet valve ball, 28 a lower oil inlet valve seat, 29 a lower valve cover joint, 30 an oil outlet valve seat B and 31 an oil outlet valve seat C.
The specific implementation mode is as follows:
the invention will be further explained below with reference to the accompanying drawings:
as shown in the attached drawing 1, the double-acting oil well pump comprises an upper connector 1, an upper oil inlet valve cover 4, a middle oil outlet valve cover 17 and a lower oil outlet valve cover 22, wherein the upper connector 1 is connected with the upper oil inlet valve cover 4 in a threaded manner, an upper oil inlet valve seat 7 is arranged in a ring hole formed in the lower part of the upper oil inlet valve cover 4, the upper part of the upper oil inlet valve seat 7 is positioned by a shoulder in the hole of the upper oil inlet valve cover 4, the lower end of the upper oil inlet valve cover 4 is connected with an upper oil inlet valve seat pressure cap 8 in a threaded manner, the upper oil inlet valve seat pressure cap 8 is pressed against the upper oil inlet valve seat 7, and an upper oil inlet valve ball 6 is arranged on the upper part of the upper oil inlet valve seat 7; the outer thread at the bottom end of the upper oil inlet valve cover 4 is connected with the shoulder at the upper end of the outer connecting sleeve 9, the inner thread at the lower end of the outer connecting sleeve 9 is connected with the pump cylinder joint 16, the inner thread at the lower end of the pump cylinder joint 16 is connected with the pump cylinder 21, the outer thread at the lower end of the pump cylinder 21 is connected with the pump cylinder coupling 24, the lining 19 is arranged in the pump cylinder 21, the upper part of the lining 19 is positioned by the shoulder in the pump cylinder joint 16, the lower part of the lining 19 is positioned by the shoulder in the pump cylinder coupling 24, the lower end of the pump cylinder coupling 24 is connected with the lower oil inlet valve cover 25 in; a lower oil inlet valve seat 28 is arranged in the lower oil inlet valve cover 25, the upper part of the lower oil inlet valve seat 28 is positioned close to the inner shoulder of the lower oil inlet valve cover 25, the lower part of the lower oil inlet valve seat 28 is positioned close to the end part of the lower oil inlet valve cover joint 29, a lower oil inlet valve ball 27 and an auxiliary valve ball 26 on the upper part of the lower oil inlet valve seat 28 are arranged on the lower oil inlet valve seat 28, and the auxiliary valve ball is used for slowing down the abrasion between the lower oil inlet valve ball 27 and the lower oil inlet valve seat 28; an oil outlet joint 2 is arranged in the upper joint 1, an opening is formed in the middle of the oil outlet joint 2, and the opening is communicated with the upper joint 1, an upper oil inlet valve cover 4 and an annular space between the upper hollow pull rod 5; the external thread at the lower end of the oil outlet joint 2 is connected with an upper hollow pull rod 5, and a packing 3 is arranged between the upper hollow pull rod 5 and an upper oil inlet valve cover 4; the external shoulder thread at the lower end of the upper hollow pull rod 5 is connected with an inner connecting sleeve 10, an oil outlet valve cover 11 is welded inside the inner connecting sleeve 10, and the thread at the lower end of the upper oil outlet valve cover 11 is connected with an upper oil outlet valve cover joint 14; an oil outlet valve seat 13 is arranged in the upper oil outlet valve cover 11, the upper part of the oil outlet valve seat 13 is positioned by the shoulder of the upper oil outlet valve cover 11, and the lower part of the oil outlet valve seat 13 is positioned by the end part of the upper oil outlet valve cover joint 14; an oil outlet valve ball 12 is arranged at the upper part of the oil outlet valve seat 13, the lower end of the inner connecting sleeve 10 is connected with a lower hollow pull rod 15 through internal threads, the lower end of the lower hollow pull rod 15 is connected with a middle oil outlet valve cover 17 through screw threads, and the lower end of the middle oil outlet valve cover 17 is connected with a middle oil outlet valve cover joint 18 through screw threads; an oil outlet valve seat B30 is arranged in the middle oil outlet valve seat 17, the upper part of the oil outlet valve seat B30 is positioned by the shoulder of the middle oil outlet valve seat 17, the lower part of the oil outlet valve seat B30 is positioned by the end part of the upper middle oil outlet valve seat joint 18, and an oil outlet valve ball 12 is arranged at the upper part of the oil outlet valve seat B30; the lower end of the middle oil outlet valve cover joint 18 is connected with a piston 20 through a screw thread, the lower end of the piston 20 is connected with a lower oil outlet valve cover 22 through a screw thread, and the lower end of the lower oil outlet valve cover 22 is connected with a lower oil outlet valve cover joint 23 through a screw thread; an oil outlet valve seat C31 is arranged in the lower oil outlet valve seat 22, the upper part of the oil outlet valve seat C31 is positioned by the shoulder of the lower oil outlet valve seat 22, the lower part of the oil outlet valve seat C31 is positioned by the end part of the lower middle oil outlet valve seat joint 23, and the upper part of the oil outlet valve seat C31 is provided with an oil outlet valve ball 12.
The lower annular space between the upper oil inlet valve cover 4 and the upper hollow pull rod 5, the annular space between the outer connecting sleeve 9 and the upper hollow pull rod 5, the inner connecting sleeve 10, the lower hollow pull rod 15 and the intermediate oil outlet valve cover 17 form an upper cavity of the piston 20; the inner hole of the lower bushing 19 of the piston 20, the inner hole of the pump barrel coupling 24 and the inner hole of the lower oil inlet valve cover 25 above the lower oil inlet valve seat 28 form a lower cavity of the piston 20.
A plurality of connecting through holes which are correspondingly welded are radially arranged on the inner connecting sleeve 10 and the upper oil outlet valve cover 11; the inner diameter of the upper oil outlet valve cover 11 connecting through hole is provided with a ring groove, and the upper oil outlet valve cover joint 14 is provided with a liquid passing hole corresponding to the ring groove of the upper oil outlet valve cover 11 connecting through hole. The inner connecting sleeve 10, the upper oil outlet valve cover 11 are provided with connecting through holes in the radial direction, and the upper oil outlet valve cover joint 14 is provided with a liquid passing hole to form a communicating channel; the outside of the communication channel is communicated with the upper cavity of the piston 20; the inside of the communicating channel is communicated with an oil outlet channel at the upper part of the oil outlet valve ball 12; therefore, the upper cavity of the piston 20 can be communicated with the oil outlet channel, and an oil suction and discharge process of the upper cavity is formed by the oil outlet valve ball 12 and the oil inlet valve ball 6; thus, twice oil suction and twice oil discharge actions are completed in one reciprocating stroke, and the working efficiency is improved.
In the field use process, the upper joint 1 of the double-acting oil well pump is connected with an oil pipe, the oil outlet joint 2 is connected with an oil pumping rod, and the oil pumping production is completed together with the oil pumping unit.
The double-acting oil well pump has the use process that: when the lower stroke is performed, the volume of the lower cavity of the piston is reduced, the pressure of the crude oil is increased, the lower oil inlet valve ball 27 is closed, the oil outlet valve ball in the middle oil outlet valve cover 17 and the oil outlet valve ball in the lower oil outlet valve cover 22 are opened, and the crude oil enters the oil pipe through the inner cavity of the lower hollow pull rod 15, the annular space of the lower hollow pull rod 15, the inner connecting sleeve 10 and the upper oil outlet valve cover 11, the inner cavity of the upper hollow pull rod 5 and the opening of the oil outlet joint 2. The lower chamber of the piston is drained during the downstroke. Meanwhile, in the upper cavity of the piston, as the volume is increased and the pressure is reduced, the upper oil inlet valve ball 6 is opened, and the oil outlet valve ball in the upper oil outlet valve cover 11 is closed, at this time, crude oil enters the upper cavity of the piston from the annular space of the oil pipe and the sleeve. Therefore, when downstroke, the upper chamber of the piston performs the oil suction process.
When the piston moves upwards, the volume of the lower cavity of the piston is increased, the pressure of crude oil is reduced, the lower oil inlet valve ball 27 is opened, the oil outlet valve ball in the middle oil outlet valve cover 17 and the oil outlet valve ball in the lower oil outlet valve cover 22 are closed, and the crude oil in the sleeve enters the lower cavity. The lower chamber of the piston is the oil suction process when it is stroked. Meanwhile, in the upper cavity of the piston, as the volume is reduced and the pressure is increased, the upper oil inlet valve ball 6 is closed, and the oil outlet valve ball in the upper oil outlet valve cover 11 is opened, at this time, the crude oil in the upper cavity enters the oil pipe through the upper oil outlet valve cover 11 of the inner connecting sleeve 10, the communicating hole formed in the upper oil outlet valve cover joint 14, the inner cavity of the upper hollow pull rod 5 and the opening of the oil outlet joint 2. Therefore, the upper chamber of the piston performs an oil discharge process when it is upstroke.
Claims (10)
1. The utility model provides a double-acting oil-well pump, includes top connection (1), goes up oily valve cover (4), well oily valve cover (17), lower oily valve cover (22), its characterized in that: the upper connector (1) is connected with an upper oil inlet valve cover (4) in a threaded manner, an upper oil inlet valve seat (7) is arranged in an annular hole formed in the lower part of the upper oil inlet valve cover, the lower end of the upper oil inlet valve cover is connected with an upper oil inlet valve seat pressing cap (8) in a threaded manner, the upper oil inlet valve seat pressing cap (8) is pressed against the upper oil inlet valve seat, and an upper oil inlet valve ball (6) is arranged on the upper part of the upper oil inlet valve seat (7); the outer part of the bottom end of the upper oil inlet valve cover (4) is in threaded connection with a shoulder at the upper end of an outer connecting sleeve (9), the lower end of the outer connecting sleeve (9) is in threaded connection with a pump barrel joint (16), the lower end of the pump barrel joint is in threaded connection with a pump barrel (21), the lower end of the pump barrel (21) is in threaded connection with a pump barrel coupling (24), a lining (19) is arranged in the pump barrel (21), the lower end of the pump barrel coupling (24) is in threaded connection with a lower oil inlet valve cover (25), and the lower part of the lower oil inlet valve cover (25) is in threaded connection with a; a lower oil inlet valve seat (28) is arranged in the lower oil inlet valve cover (25), and a lower oil inlet valve ball (27) is arranged on the lower oil inlet valve seat (28);
an oil outlet joint (2) is arranged in the upper joint (1), and an opening is formed in the middle of the oil outlet joint; the external thread at the lower end of the oil outlet joint (2) is connected with an upper hollow pull rod (5), the external circular bead thread at the lower end of the upper hollow pull rod (5) is connected with an inner connecting sleeve (10), an oil outlet valve cover (11) is welded inside the inner connecting sleeve (10), and the thread at the lower end of the upper oil outlet valve cover (11) is connected with an oil outlet valve cover joint (14); an oil outlet valve seat (13) is arranged in the upper oil outlet valve cover (11); an oil outlet valve ball (12) is arranged at the upper part of the oil outlet valve seat (13), the lower end of the inner connecting sleeve (10) is connected with a lower hollow pull rod (15) through internal threads, the lower end of the lower hollow pull rod (15) is connected with a middle oil outlet valve cover (17) through screw threads, and the lower end of the middle oil outlet valve cover is connected with a middle oil outlet valve cover joint (18) through screw threads; an oil outlet valve seat B (30) is arranged in the middle oil outlet valve cover (17), and an oil outlet valve ball is arranged at the upper part of the oil outlet valve seat B (30); the lower end of the middle oil outlet valve cover joint (18) is in threaded connection with a piston (20), the lower end of the piston (20) is in threaded connection with a lower oil outlet valve cover (22), and the lower end of the lower oil outlet valve cover (22) is in threaded connection with a lower oil outlet valve cover joint (23); an oil outlet valve seat C (31) is arranged in the lower oil outlet valve cover (22), and an oil outlet valve ball is arranged at the upper part of the oil outlet valve seat C (31).
2. A double acting pump as claimed in claim 1, wherein: the upper part of the upper oil inlet valve seat (7) is positioned by the shoulder in the hole of the upper oil inlet valve cover (4).
3. A double acting pump as claimed in claim 1, wherein: an auxiliary valve ball (26) is arranged on the lower oil inlet valve seat (28); the auxiliary valve ball (26) is arranged on the upper part of the lower oil inlet valve ball (27); the upper part of the lower oil inlet valve seat (28) is positioned close to the inner shoulder of the lower oil inlet valve cover (25), and the lower part of the lower oil inlet valve seat is positioned close to the end part of the joint (29) of the lower oil inlet valve cover.
4. A double acting pump as claimed in claim 1, wherein: the upper part of the oil outlet valve seat C (31) is positioned by the shoulder of the lower oil outlet valve cover (22), and the lower part is positioned by the end part of the joint (23) of the lower middle oil outlet valve cover.
5. A double acting pump as claimed in claim 1, wherein: the upper portion of the liner (19) is positioned by an internal shoulder of the pump barrel fitting (16) and the lower portion is positioned by an internal shoulder of the pump barrel collar (24).
6. A double acting pump as claimed in claim 1, wherein: packing is arranged between the upper hollow pull rod (5) and the upper oil inlet valve cover (4).
7. A double acting pump as claimed in claim 1, wherein: the upper part of the oil outlet valve seat A (13) is positioned by the shoulder of the upper oil outlet valve cover (11), and the lower part is positioned by the end part of the upper oil outlet valve cover joint (14).
8. A double acting pump as claimed in claim 1, wherein: the upper part of the oil outlet valve seat B (30) is positioned by the shoulder of the upper middle oil outlet valve cover (17), and the lower part is positioned by the end part of the upper middle oil outlet valve cover joint (18).
9. A double acting pump as claimed in claim 1, wherein: the lower annular space between the upper oil inlet valve cover and the upper hollow pull rod, the annular space between the outer connecting sleeve and the upper hollow pull rod, the inner connecting sleeve, the lower hollow pull rod and the intermediate oil outlet valve cover form an upper cavity of the piston (20); the inner hole of the lower part lining (19) of the piston (20), the inner hole of the pump barrel coupling (24) and the inner hole of the lower oil inlet valve cover (25) above the lower oil inlet valve seat (28) form a lower cavity of the piston (20).
10. A double acting pump as claimed in claim 1, wherein: a plurality of connecting holes which are correspondingly welded are radially formed in the inner connecting sleeve (10) and the upper oil outlet valve cover (11); an annular groove is formed in the inner diameter of the upper oil outlet valve cover (11) connecting through hole, and a liquid passing hole is formed in the upper oil outlet valve cover joint (14) corresponding to the annular groove of the upper oil outlet valve cover (11) connecting through hole; a communicating channel is formed by a connecting through hole radially formed in the inner connecting sleeve (10) and the upper oil outlet valve cover (11) and a liquid passing hole formed in the upper oil outlet valve cover joint (14); the outside of the communication channel is communicated with the upper cavity of the piston (20); the interior of the communicating channel is communicated with the oil outlet channel at the upper part of the oil outlet valve ball (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010950192.8A CN112196779A (en) | 2020-09-11 | 2020-09-11 | Double-acting oil well pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010950192.8A CN112196779A (en) | 2020-09-11 | 2020-09-11 | Double-acting oil well pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112196779A true CN112196779A (en) | 2021-01-08 |
Family
ID=74014713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010950192.8A Withdrawn CN112196779A (en) | 2020-09-11 | 2020-09-11 | Double-acting oil well pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112196779A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1468988A (en) * | 1964-12-07 | 1967-02-10 | Shell Int Research | Oil well pump |
| CN2536813Y (en) * | 2002-02-09 | 2003-02-19 | 靳振伟 | High efficient large capacity sucker pump |
| CN101298867A (en) * | 2007-05-01 | 2008-11-05 | 葛慧英 | Double-work rod oil-well pump |
| CN202560526U (en) * | 2012-04-24 | 2012-11-28 | 东北石油大学 | Double-acting layering oil well pump |
| CN203906240U (en) * | 2014-06-11 | 2014-10-29 | 朱春林 | Double-action oil suction pump |
-
2020
- 2020-09-11 CN CN202010950192.8A patent/CN112196779A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1468988A (en) * | 1964-12-07 | 1967-02-10 | Shell Int Research | Oil well pump |
| CN2536813Y (en) * | 2002-02-09 | 2003-02-19 | 靳振伟 | High efficient large capacity sucker pump |
| CN101298867A (en) * | 2007-05-01 | 2008-11-05 | 葛慧英 | Double-work rod oil-well pump |
| CN202560526U (en) * | 2012-04-24 | 2012-11-28 | 东北石油大学 | Double-acting layering oil well pump |
| CN203906240U (en) * | 2014-06-11 | 2014-10-29 | 朱春林 | Double-action oil suction pump |
Non-Patent Citations (1)
| Title |
|---|
| 胜利油田采油指挥部: "双作用深井抽油泵", 《石油钻采机械情报》 * |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20210108 |
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| WW01 | Invention patent application withdrawn after publication |