CN210919407U - Circulation gas-proof oil-well pump - Google Patents
Circulation gas-proof oil-well pump Download PDFInfo
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- CN210919407U CN210919407U CN201921143580.4U CN201921143580U CN210919407U CN 210919407 U CN210919407 U CN 210919407U CN 201921143580 U CN201921143580 U CN 201921143580U CN 210919407 U CN210919407 U CN 210919407U
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- fixed valve
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- pump barrel
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Abstract
The utility model relates to a circulation gas-tight oil well pump, which comprises an upper pump barrel, an upper coupling, a pull rod, a middle annular mechanism, a lower pump barrel, a plunger assembly, an upper movable valve, a lower cavity, a lower coupling, a fixed valve outer cover and a fixed valve joint; the pull rod is arranged in the center of the upper pump barrel; the plunger assembly is arranged in the lower pump barrel; a lower cavity is formed inside the lower pump cylinder; the fixed valve outer cover is fixedly connected with the lower coupling; the fixed valve joint is fixedly connected with the fixed valve outer cover; the middle annular mechanism comprises a middle cylinder, a lining pipe and a round hole; the lining pipe is arranged on the inner layer of the middle cylinder; the circular holes are arranged on the lining pipe and are provided with a plurality of rows; an annular chamber is arranged in the middle cylinder. The utility model discloses can be used for the circulation to prevent the oil-well pump of gas, simple structure is reasonable, and the preparation is convenient, and the gas-liquid ratio is low in the pump, and work efficiency is high.
Description
Technical Field
The utility model relates to an oil-well pump especially relates to a circulation gas-tight oil-well pump.
Background
The oil well pump is a common underground device driven by oil pumping machine to pump crude oil in well to ground, and is generally composed of pump barrel, suction valve, piston and discharge valve, and can be divided into tubular pump and rod pump according to the fixing mode of oil well pump in well. The tubular pump is characterized by that the external cylinder, bush and suction valve are assembled on the ground, and connected on the lower portion of oil pipe, and firstly placed in the well, then the piston with discharge valve is placed in the pump by means of sucker rod through the oil pipe.
In the oil well at the middle and later stages of oil field exploitation or the oil well with low dynamic liquid level, especially in the oil well with high gas-liquid ratio, gas is one of the main factors influencing the pumping efficiency of an oil well pump, and because the gas occupies a part of the volume of a pump cavity, the fullness and the pumping efficiency are greatly reduced in the whole secondary pumping process of the movable valve. When the volume occupied by the gas in the pump cavity is large enough, the floating valve is opened in a lagging mode or cannot be opened in a downstroke, even the fixed valve cannot be opened due to gas separation and expansion in an upstroke, the gas in the cavity is expanded and compressed in the whole upstroke and downstroke, liquid lifting is not carried out, the oil well pump has an air lock phenomenon and cannot work normally, and liquid impact is often caused in the air lock process, so that the vibration of the rod oil pumping system is caused, and the damage is accelerated. Therefore, a circulating gas-tight oil well pump is needed, which increases the filling coefficient of liquid in a pump cylinder, reduces the gas-liquid ratio in the pump, eliminates the interference of gas, improves the pump efficiency, and avoids the occurrence of gas lock and liquid impact.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a circulation gas-tight oil-well pump of simple structure is reasonable, the preparation is convenient, the gas-liquid ratio is low in the pump, work efficiency is high.
The utility model provides an above-mentioned technical problem's technical scheme as follows: a circular flow gas-proof oil well pump comprises an upper pump barrel, an upper coupling, a pull rod, a middle circular mechanism, a lower pump barrel, a plunger assembly, an upper traveling valve, a lower chamber, a lower coupling, a fixed valve outer cover and a fixed valve joint; the upper coupling is fixedly connected with the upper pump barrel; the pull rod is arranged in the center of the upper pump barrel; the upper end of the middle annular mechanism is connected with the upper pump barrel, and the lower end of the middle annular mechanism is connected with the lower pump barrel; the plunger assembly is arranged in the lower pump barrel; the upper movable valve is arranged at the upper end of the lower pump barrel; the lower traveling valve is arranged at the lower end of the lower pump cylinder; a lower cavity is formed inside the lower pump cylinder; the lower hoop is arranged at the lowest end of the lower pump barrel; the fixed valve is provided with the fixed valve outer cover; the fixed valve outer cover is fixedly connected with the lower coupling; the fixed valve joint is arranged at the lowest end of the fixed valve and is fixedly connected with the fixed valve outer cover.
According to the circulating gas-proof oil well pump, the upper pump cylinder and the lower pump cylinder are formed by dividing the integral pump cylinder into two sections, so that the circulating gas-proof oil well pump is convenient to manufacture and install, the plunger assembly is guaranteed to operate easily and without stagnation in the whole stroke by means of high-precision straightness, and the working efficiency is high.
According to the annular flow gas-proof oil well pump, the length of the plunger assembly is far longer than the whole length of the middle annular mechanism, so that when the plunger assembly is in an up stroke, the pull rod drives the plunger assembly to move upwards, the upstream movable valve and the downstream movable valve are closed, the fixed valve is opened to feed oil, when the lower end of the plunger assembly enters the middle annular mechanism, the annular chamber is communicated with the lower chamber, liquid in the annular chamber with certain pressure flows into the lower chamber, and part of gas escaping from the lower chamber enters the annular chamber through the circular hole; during the down stroke, the plunger assembly descends, the fixed valve is closed, gas in the lower cavity is compressed, most of the gas enters the annular cavity, liquid is pressed in a small part of the gas, when the pressure of the liquid in the lower part is greater than that of the liquid in the upper part, the upper movable valve and the lower movable valve are opened to feed oil, when the upper end of the plunger assembly enters the annular cavity, the gas in the annular cavity escapes upwards, meanwhile, the annular cavity is filled with the liquid until the down stroke is finished, the structure is more reasonable, the gas ratio in the pump is low, the phenomena of air lock and liquid impact are effectively avoided, the working efficiency is higher, and the economic benefit is.
The annular flow gas-proof oil well pump comprises a middle cylinder, a lining pipe and a circular hole, wherein the middle annular mechanism comprises a middle cylinder body; the lining pipe is arranged on the inner layer of the middle cylinder; the round hole is arranged on the lining pipe, so that the structure is more reasonable and compact, and the manufacture is more convenient.
As above a circulation gas-tight oil-well pump, the round hole be equipped with a plurality of rows, a plurality of rows the round hole be evenly distributed and be in the circumferencial direction of interior bushing pipe, it is more convenient that the gas-liquid of being convenient for passes through more smoothly, and the gas-liquid ratio is lower in the pump, can effectively avoid appearing airlock and liquid attack phenomenon, work efficiency is higher, and life is longer.
As the annular cavity is arranged in the middle barrel, the circular-flow gas-proof oil well pump is convenient to use, reasonable and compact in structure, capable of effectively forming gas-liquid exchange between the annular cavity and the lower cavity, reducing the gas-liquid ratio in the pump, eliminating the interference of gas, improving the pump efficiency and avoiding the occurrence of gas lock and liquid impact.
According to the circulation air-proof oil well pump, the aperture of the lining pipe is larger than the outer diameter of the plunger assembly, so that the plunger assembly can easily run in the whole stroke without stagnation, the structure is simpler and more reasonable, and the working efficiency is higher.
As the preferable scheme of the circulation gas-proof oil well pump, the two ends of the middle cylinder are provided with the cylinder joints which are respectively and fixedly connected with the upper pump cylinder and the lower pump cylinder, so that the circulation gas-proof oil well pump is convenient to install, firmer and more stable in connection and safer and more reliable in use.
As the preferable scheme of the circulation gas-proof oil well pump, the inner wall of the middle cylinder is provided with the sealing ring, so that the sealing effect is better, the energy consumption is lower and the efficiency is higher.
As the preferable scheme of the circulation gas-proof oil well pump, the outer wall of the plunger assembly is provided with the sand scraping groove, so that sand blockage is prevented conveniently, the failure rate is reduced, the working efficiency is higher, and the service life is longer.
The utility model has the advantages that: the upper coupling of the utility model is fixedly connected with the upper pump barrel; the pull rod is arranged in the center of the upper pump barrel; the upper end of the middle annular mechanism is connected with an upper pump barrel, and the lower end of the middle annular mechanism is connected with a lower pump barrel; the plunger assembly is arranged in the lower pump barrel; the upper traveling valve is arranged at the upper end of the lower pump barrel; the lower traveling valve is arranged at the lower end of the lower pump barrel; a lower cavity is formed inside the lower pump cylinder; the lower coupling is arranged at the lowest end of the lower pump barrel; the fixed valve is provided with a fixed valve outer cover; the fixed valve outer cover is fixedly connected with a lower coupling; the fixed valve joint is arranged at the lowest end of the fixed valve and is fixedly connected with the fixed valve outer cover; the upper pump cylinder and the lower pump cylinder are formed by dividing the integral pump cylinder into two sections; the length of the plunger assembly is far longer than the whole length of the middle annular mechanism; the middle annular mechanism comprises a middle cylinder, a lining pipe and a round hole; the lining pipe is arranged on the inner layer of the middle cylinder; the circular hole is arranged on the inner liner tube; the circular holes are provided with a plurality of rows of circular holes which are uniformly distributed in the circumferential direction of the lining pipe; an annular cavity is arranged in the middle cylinder; the aperture of interior bushing pipe is greater than the external diameter of plunger assembly, the utility model discloses can be used for the circulation to prevent the oil-well pump of gas, simple structure is reasonable, and the preparation is convenient, and the gas-liquid ratio is low in the pump, and work efficiency is high.
Drawings
Fig. 1 is a schematic structural diagram of the circulation gas-proof oil well pump in the embodiment.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
As shown in fig. 1, a circulation gas-tight oil well pump comprises an upper pump barrel 1, an upper coupling 2, a pull rod 3, a middle annular mechanism, a lower pump barrel 4, a plunger assembly 5, an upper traveling valve 6, a lower traveling valve 7, a lower chamber 8, a lower coupling 9, a standing valve 10, a standing valve housing 11 and a standing valve joint 12; the upper coupling 2 is fixedly connected with the upper pump barrel 1; the pull rod 3 is arranged in the center of the upper pump barrel 1; the upper end of the middle annular mechanism is connected with the upper pump barrel 1, and the lower end of the middle annular mechanism is connected with the lower pump barrel 4; the plunger assembly 5 is arranged in the lower pump barrel 4; the upper movable valve 6 is arranged at the upper end of the lower pump barrel 4; the downstream valve 7 is arranged at the lower end of the lower pump barrel 4; a lower cavity 8 is formed inside the lower pump barrel 4; the lower ferrule 9 is arranged at the lowest end of the lower pump barrel 4; the fixed valve 10 is provided with a fixed valve outer cover 11; the fixed valve outer cover 11 is fixedly connected with the lower hoop 9; the fixed valve joint 12 is arranged at the lowest end of the fixed valve 10, and the fixed valve joint 12 is fixedly connected with the fixed valve outer cover 11.
In one embodiment of the circulation gas-proof oil well pump, the upper pump cylinder 1 and the lower pump cylinder 4 are formed by dividing the integral pump cylinder into two sections, so that the circulation gas-proof oil well pump is convenient to manufacture and install, the plunger assembly 5 is guaranteed to run easily and without stagnation in the whole stroke by means of high-precision straightness, and the working efficiency is high.
In one embodiment of the circulation gas-proof oil-well pump, the length of the plunger assembly 5 is far longer than the whole length of the middle annular mechanism, so that during an upstroke, the pull rod 3 drives the plunger assembly 5 to move upwards, the upstream movable valve 6 and the downstream movable valve 7 are closed, the fixed valve 10 is opened to feed oil, when the lower end of the plunger assembly 5 enters the middle annular mechanism, the annular chamber 16 is communicated with the lower chamber 8, liquid in the annular chamber 16 with certain pressure flows into the lower chamber 8, and part of gas escaping from the lower chamber 8 enters the annular chamber 16 through the round hole 15; during the down stroke, the plunger assembly 5 descends, the fixed valve 10 is closed, the gas in the lower cavity is compressed, most of the gas enters the annular chamber 16, and a small part of the gas is pressed into the liquid, when the pressure of the liquid in the lower part is greater than that of the liquid in the upper part, the upper movable valve 6 and the lower movable valve 7 are opened to feed the oil, when the upper end of the plunger assembly 5 enters the annular chamber 16, the gas in the annular chamber 16 escapes upwards, and meanwhile, the annular chamber 16 is filled with the liquid until the down stroke is finished, the structure is more reasonable, the gas-liquid ratio in the pump is low, the phenomena of air lock and liquid impact are effectively avoided, the working efficiency is higher.
In one embodiment of the circulation gas-proof oil well pump, the middle annular mechanism comprises a middle cylinder 13, a lining pipe 14 and a circular hole 15; the lining pipe 14 is arranged on the inner layer of the middle cylinder 13; the round hole 15 is arranged on the lining pipe 14, so that the structure is more reasonable and compact, and the manufacture is more convenient.
In one embodiment of the circulation gas-proof oil-well pump, the circular holes 15 are provided with a plurality of rows, the circular holes 15 are uniformly distributed in the circumferential direction of the inner lining pipe 14, so that gas and liquid can pass more smoothly and conveniently, the gas-liquid ratio in the pump is lower, the phenomena of gas lock and liquid impact can be effectively avoided, and the working efficiency is higher.
In one embodiment of the circulation gas-proof oil-well pump, the middle cylinder 13 is internally provided with the annular chamber 16, so that the structure is more reasonable and compact, gas-liquid exchange between the annular chamber 16 and the lower chamber 8 can be effectively formed, the gas-liquid ratio in the pump is reduced, the interference of gas is eliminated, the pump efficiency is improved, and the phenomena of gas lock and liquid impact are avoided.
In one embodiment of the circulation gas-proof oil-well pump, the bore diameter of the liner tube 14 is larger than the outer diameter of the plunger assembly 5, so that the plunger assembly 5 can easily run without stagnation in the whole stroke, the structure is simpler and more reasonable, and the working efficiency is higher.
In one embodiment of the circulation gas-proof oil-well pump, the two ends of the middle cylinder 13 are provided with cylinder joints, and the cylinder joints are respectively and fixedly connected with the upper pump cylinder 1 and the lower pump cylinder 4, so that the circulation gas-proof oil-well pump is convenient to mount, firm and stable in connection, and safe and reliable in use.
In one embodiment of the circulation gas-proof oil well pump, the inner wall of the middle cylinder 13 is provided with the sealing ring, so that the sealing effect is better, the energy consumption is lower, and the efficiency is higher.
In one embodiment of the circulation gas-proof oil well pump, the outer wall of the plunger assembly 5 is provided with a sand scraping groove, so that sand blockage is prevented conveniently, the failure rate is reduced, the working efficiency is higher, and the service life is longer.
The upper coupling 2 of the utility model is fixedly connected with the upper pump barrel 1; the pull rod 3 is arranged in the center of the upper pump barrel 1; the upper end of the middle annular mechanism is connected with the upper pump barrel 1, and the lower end of the middle annular mechanism is connected with the lower pump barrel 4; the plunger assembly 5 is arranged in the lower pump barrel 4; the upper movable valve 6 is arranged at the upper end of the lower pump barrel 4; the downstream valve 7 is arranged at the lower end of the lower pump barrel 4; a lower cavity 8 is formed inside the lower pump barrel 4; the lower coupling 9 is arranged at the lowest end of the lower pump barrel 4; the fixed valve 10 is provided with a fixed valve housing 11; the fixed valve outer cover 11 is fixedly connected with a lower coupling 9; the fixed valve joint 12 is arranged at the lowest end of the fixed valve 10, and the fixed valve joint 12 is fixedly connected with the fixed valve outer cover 11; the upper pump cylinder 1 and the lower pump cylinder 4 are formed by dividing an integral pump cylinder into two sections; the length of the plunger assembly 5 is far longer than the whole length of the middle annular mechanism; the middle annular mechanism comprises a middle cylinder body 13, a lining pipe 14 and a round hole 15; the lining pipe 14 is arranged on the inner layer of the middle cylinder 13; the circular hole 15 is arranged on the inner liner tube 14; the circular holes 15 are provided with a plurality of rows of circular holes 15 which are uniformly distributed in the circumferential direction of the lining tube 14; an annular chamber 16 is arranged in the middle cylinder body 13; when the plunger assembly is used, during an upward stroke, the pull rod 3 drives the plunger assembly 5 to move upwards, the upstream movable valve 6 and the downstream movable valve 7 are closed, the fixed valve 10 is opened to feed oil, when the lower end of the plunger assembly 5 enters the middle annular mechanism, the annular chamber 16 is communicated with the lower chamber 8, liquid in the annular chamber 16 with certain pressure flows into the lower chamber 8, and part of gas escaping from the lower chamber 8 enters the annular chamber 16 through the round hole 15; on the down stroke, the plunger assembly 5 moves downwards, the fixed valve 10 is closed, the gas in the lower cavity is compressed, the majority enters the annular chamber 16, the minority is pressed into the liquid, when the pressure of the lower liquid is greater than that of the upper liquid, the upper movable valve 6 and the lower movable valve 7 are opened to feed oil, when the upper end of the plunger assembly 5 enters the annular chamber 16, the gas in the annular chamber 16 escapes upwards, and meanwhile, the annular chamber 16 is filled with the liquid until the down stroke is finished, and a pumping process is completed. The utility model discloses can be used for the circulation to prevent the oil-well pump of gas, simple structure is reasonable, and the preparation is convenient, and the gas-liquid ratio is low in the pump, and work efficiency is high.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (7)
1. The utility model provides a circulation gas-tight oil-well pump which characterized in that: the device comprises an upper pump cylinder (1), an upper coupling (2), a pull rod (3), a middle annular mechanism, a lower pump cylinder (4), a plunger assembly (5), an upper movable valve (6), a lower movable valve (7), a lower chamber (8), a lower coupling (9), a fixed valve (10), a fixed valve housing (11) and a fixed valve joint (12); the upper coupling (2) is fixedly connected with the upper pump barrel (1); the pull rod (3) is arranged in the center of the upper pump barrel (1); the upper end of the middle annular mechanism is connected with the upper pump barrel (1), and the lower end of the middle annular mechanism is connected with the lower pump barrel (4); the plunger assembly (5) is arranged in the lower pump barrel (4); the upper movable valve (6) is arranged at the upper end of the lower pump barrel (4); the downstream valve (7) is arranged at the lower end of the lower pump barrel (4); a lower chamber (8) is formed inside the lower pump cylinder (4); the lower hoop (9) is arranged at the lowest end of the lower pump barrel (4); the fixed valve (10) is provided with a fixed valve outer cover (11); the fixed valve outer cover (11) is fixedly connected with the lower coupling (9); the fixed valve joint (12) is arranged at the lowest end of the fixed valve (10), and the fixed valve joint (12) is fixedly connected with the fixed valve outer cover (11).
2. The circulation gas-proof oil-well pump according to claim 1, characterized in that: the upper pump cylinder (1) and the lower pump cylinder (4) are formed by dividing an integral pump cylinder into two sections.
3. The circulation gas-proof oil-well pump according to claim 1, characterized in that: the length of the plunger assembly (5) is far longer than the whole length of the middle annular mechanism.
4. The circulation gas-proof oil-well pump according to claim 1, characterized in that: the middle annular mechanism comprises a middle cylinder body (13), a lining pipe (14) and a round hole (15); the lining pipe (14) is arranged on the inner layer of the middle cylinder (13); the round hole (15) is arranged on the lining pipe (14).
5. The circulation gas-proof oil-well pump according to claim 4, characterized in that: the circular holes (15) are provided with a plurality of rows, and the circular holes (15) in the rows are uniformly distributed in the circumferential direction of the lining pipe (14).
6. The circulation gas-proof oil-well pump according to claim 4, characterized in that: an annular chamber (16) is arranged in the middle cylinder body (13).
7. The circulation gas-proof oil-well pump according to claim 4, characterized in that: the bore diameter of the lining pipe (14) is larger than the outer diameter of the plunger assembly (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921143580.4U CN210919407U (en) | 2019-07-20 | 2019-07-20 | Circulation gas-proof oil-well pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921143580.4U CN210919407U (en) | 2019-07-20 | 2019-07-20 | Circulation gas-proof oil-well pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210919407U true CN210919407U (en) | 2020-07-03 |
Family
ID=71345237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921143580.4U Expired - Fee Related CN210919407U (en) | 2019-07-20 | 2019-07-20 | Circulation gas-proof oil-well pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210919407U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112594174A (en) * | 2020-11-26 | 2021-04-02 | 中国石油天然气股份有限公司 | Oil-well pump for oil pumping machine to exploit petroleum and natural gas |
-
2019
- 2019-07-20 CN CN201921143580.4U patent/CN210919407U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112594174A (en) * | 2020-11-26 | 2021-04-02 | 中国石油天然气股份有限公司 | Oil-well pump for oil pumping machine to exploit petroleum and natural gas |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200703 Termination date: 20210720 |
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| CF01 | Termination of patent right due to non-payment of annual fee |