CN210218063U - Double-function gas-proof reinforced oil-well pump - Google Patents
Double-function gas-proof reinforced oil-well pump Download PDFInfo
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- CN210218063U CN210218063U CN201921251118.6U CN201921251118U CN210218063U CN 210218063 U CN210218063 U CN 210218063U CN 201921251118 U CN201921251118 U CN 201921251118U CN 210218063 U CN210218063 U CN 210218063U
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- 239000003129 oil well Substances 0.000 title claims abstract description 22
- 238000003860 storage Methods 0.000 claims abstract description 37
- 238000007789 sealing Methods 0.000 claims abstract description 17
- 238000010168 coupling process Methods 0.000 claims abstract description 16
- 238000005859 coupling reaction Methods 0.000 claims abstract description 16
- 230000008878 coupling Effects 0.000 claims abstract description 15
- 229910001220 stainless steel Inorganic materials 0.000 claims description 9
- 239000010935 stainless steel Substances 0.000 claims description 9
- 230000006835 compression Effects 0.000 claims description 8
- 238000007906 compression Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 5
- 230000000712 assembly Effects 0.000 abstract 1
- 238000000429 assembly Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 description 14
- 238000000605 extraction Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910001105 martensitic stainless steel Inorganic materials 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
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Abstract
The utility model discloses a difunctional gas-proof reinforced oil well pump, which comprises an upper pump cylinder and a lower pump cylinder, wherein a hollow air storage cylinder is connected between the upper pump cylinder and the lower pump cylinder, and a hollow air storage cavity is formed between the hollow air storage cylinder and the upper pump cylinder; the upper end of the upper pump cylinder is connected with a sealing cylinder, and the upper end of the sealing cylinder is hermetically connected with an air-tight slide valve assembly communicated with the hollow air storage cavity; the upper pump barrel and the lower pump barrel are internally provided with plungers in a sliding way, and the upper ends of the plungers are connected with pull rods through traveling valve assemblies; the upper end of the hollow air cylinder is connected with an upper outer pipe coaxially arranged outside the upper pump cylinder, an upper coupling of the pump cylinder is connected between the upper end of the upper outer pipe and the air-proof slide valve assembly, the lower end of the hollow air cylinder is connected with a lower outer pipe coaxially arranged outside the lower pump cylinder, a lower coupling is connected between the lower end of the lower outer pipe and the lower pump cylinder, and the lower end of the lower coupling is connected with a double-fixed valve assembly; the utility model discloses structure safe and reliable, intensity height, working process safety are controllable, can effectively avoid producing airlock and card pump phenomenon.
Description
Technical Field
The utility model belongs to the technical field of oil field oil recovery oil-well pump in the pit, especially, relate to a difunctional gas-proof strenghthened type oil-well pump.
Background
In high gas to liquid ratio wells, the effect of the gas on the pumping efficiency is very severe. The air occupies part of the volume of the pump cavity, and can reduce the fullness in the pump cavity, so that the opening of a valve ball of the oil well pump is delayed, and even the air lock phenomenon occurs. The air lock can also generate liquid level impact, which causes vibration of the sucker rod pumping system, accelerates the damage of oil extraction parts, and causes frequent operation of the pumping well, thereby shortening the pump detection period and increasing the exploitation cost. Meanwhile, the whole-barrel oil well pump is adopted in a deep well, the liquid column load and the tail pipe weight in an oil pipe are all acted on the pump barrel, so that the pump barrel is deformed, the pump is seriously clamped, the well is frequently repaired, the normal operation of an oil field is seriously influenced, and the oil extraction cost is increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a difunctional gas-proof strenghthened type oil-well pump that structure safe and reliable, intensity are high, effectively prevent that airlock and card pump phenomenon from appearing, and the working process is controllable safely is provided.
In order to solve the technical problem, the technical scheme of the utility model is that: the double-function gas-proof reinforced oil well pump comprises an upper pump cylinder and a lower pump cylinder, wherein a hollow air storage cylinder is connected between the upper pump cylinder and the lower pump cylinder, and a hollow air storage cavity is formed between the hollow air storage cylinder and the upper pump cylinder; the upper end of the upper pump cylinder is connected with a sealing cylinder, and the upper end of the sealing cylinder is connected with an air-tight slide valve assembly communicated with the hollow air storage cavity in a sealing manner; a plunger is arranged in the upper pump barrel and the lower pump barrel in a sliding manner, the lower end of the plunger is connected with a lower compression joint, the upper end of the plunger is connected with a traveling valve assembly, and the upper end of the traveling valve assembly is connected with a pull rod matched with the air-tight slide valve assembly; the upper end of the hollow air cylinder is connected with an upper outer tube coaxially mounted outside the upper pump cylinder, an upper coupling of the pump cylinder is connected between the upper end of the upper outer tube and the air-proof sliding valve assembly, the lower end of the hollow air cylinder is connected with a lower outer tube coaxially mounted outside the lower pump cylinder, a lower coupling is connected between the lower end of the lower outer tube and the lower pump cylinder, and the lower end of the lower coupling is connected with a double-fixed valve assembly.
As the preferred technical scheme, be provided with between the pull rod with go up the pump barrel with the exhaust passage of cavity formula reservoir intercommunication, be provided with on the air defense slide valve assembly with the gas vent of exhaust passage intercommunication.
According to a preferable technical scheme, the lower end of the upper pump cylinder is provided with a guide exhaust extension pipe extending into the hollow air storage cylinder in an extending mode, and a gas exchange channel is arranged on the pipe wall of the guide exhaust extension pipe.
As a preferred technical scheme, an upper cylinder centering block is arranged between the upper pump cylinder and the upper outer pipe.
As a preferred technical scheme, a lower cylinder centering block is arranged between the lower pump cylinder and the lower outer pipe.
As a preferred technical scheme, the double-fixed valve assembly is arranged into a falling object prevention fixed valve structure.
As a preferred technical scheme, the plunger is a stainless steel plunger; the lower compression joint is a stainless steel joint.
Due to the adoption of the technical scheme, the dual-function gas-proof reinforced oil well pump comprises an upper pump cylinder and a lower pump cylinder, wherein a hollow gas storage cylinder is connected between the upper pump cylinder and the lower pump cylinder, and a hollow gas storage cavity is formed between the hollow gas storage cylinder and the upper pump cylinder; the upper end of the upper pump cylinder is connected with a sealing cylinder, and the upper end of the sealing cylinder is connected with an air-tight slide valve assembly communicated with the hollow air storage cavity in a sealing manner; a plunger is arranged in the upper pump barrel and the lower pump barrel in a sliding manner, the lower end of the plunger is connected with a lower compression joint, the upper end of the plunger is connected with a traveling valve assembly, and the upper end of the traveling valve assembly is connected with a pull rod matched with the air-tight slide valve assembly; the upper end of the hollow air cylinder is connected with an upper outer tube coaxially arranged outside the upper pump cylinder, a pump cylinder upper coupling is connected between the upper end of the upper outer tube and the gas-tight slide valve assembly, the lower end of the hollow air cylinder is connected with a lower outer tube coaxially arranged outside the lower pump cylinder, a lower coupling is connected between the lower end of the lower outer tube and the lower pump cylinder, and the lower end of the lower coupling is connected with a double-fixed valve assembly; the utility model has safe and reliable structure, high strength and safe and controllable working process, can effectively avoid the air lock phenomenon caused by air inclusion and the pump clamping phenomenon caused by the forced deformation of a deep well pump barrel when operating in a high-air-inclusion well, a deep well and an air lock pump clamping well; the method has the following specific beneficial effects:
(1) the upper outer pipe and the lower outer pipe are arranged, so that the overall strength of the oil well pump is improved, the acting forces such as liquid column load, tail pipe weight and external extrusion are all acted on the outer pipes, and the pressure of the inner wall and the outer wall is balanced during working;
(2) the hollow gas storage cavity can collect gas and open a channel for the gas in the pump, so that the filling coefficient of the liquid in the pump cylinder is increased, the gas-liquid ratio in the pump is reduced, the interference of the gas is eliminated, and the improvement of the pump efficiency is facilitated;
(3) the gas-proof sliding valve assembly is sealed with the sealing cylinder, and gas stored in the hollow gas storage cavity can be discharged through the gas-proof sliding valve assembly during the upstroke; during the down stroke, the air-tight slide valve assembly is closed in time, the plunger is not acted by the pressure of the liquid column any more, and the traveling valve assembly can be opened rapidly to effectively prevent the air lock phenomenon.
Drawings
The drawings are only intended to illustrate and explain the present invention and do not limit the scope of the invention. Wherein:
fig. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural view of a gas slide valve assembly according to an embodiment of the present invention;
in the figure: 1-mounting a pump barrel; 2, setting a pump barrel; 3-a hollow air cylinder; 4-hollow gas storage cavity; 5-sealing the cylinder; 6-gas-tight slide valve assembly; 7-a tie rod joint; 8-a plunger; 9-pressing the joint down; 10-traveling valve assembly; 11-a pull rod; 12-an upper outer tube; 13-coupling on the pump cylinder; 14-lower outer tube; 15-lower collar; 16-a double fixed valve assembly; 17-an exhaust channel; 18-an exhaust port; 19-a pilot exhaust extension tube; 20-a gas exchange channel; 21-mounting a cylinder centralizing block; 22-lower cylinder centralizing block.
Detailed Description
The invention is further explained below with reference to the drawings and examples. In the following detailed description, certain exemplary embodiments of the present invention have been described by way of illustration only. Needless to say, a person skilled in the art will recognize that the described embodiments can be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.
As shown in fig. 1, the dual-function gas-proof reinforced oil well pump is installed at the lower end of an oil production string, and comprises an upper pump cylinder 1 and a lower pump cylinder 2, wherein a hollow air storage cylinder 3 is connected between the upper pump cylinder 1 and the lower pump cylinder 2, and a hollow air storage cavity 4 is formed between the hollow air storage cylinder 3 and the upper pump cylinder 1; the upper end of the upper pump barrel 1 is connected with a sealing barrel 5, the upper end of the sealing barrel 5 is connected with an air-proof sliding valve assembly 6 communicated with the hollow air storage cavity 4 in a sealing manner, the air-proof sliding valve assembly 6 has an air-proof locking function, and the upper part of the air-proof sliding valve assembly 6 is tightly pressed by a pull rod connector 7; a plunger 8 is slidably mounted in the upper pump barrel 1 and the lower pump barrel 2, the lower end of the plunger 8 is connected with a lower compression joint 9, the upper end of the plunger 8 is connected with a traveling valve assembly 10, the upper end of the traveling valve assembly 10 is connected with a pull rod 11 matched with the air-tight slide valve assembly 6, the lower end of the pull rod 11 is connected with the traveling valve assembly 10 through threads, and the lower compression joint 9 compresses the traveling valve assembly 10; the upper end of the hollow air cylinder 3 is connected with an upper outer tube 12 coaxially mounted outside the upper pump cylinder 1, a pump cylinder upper coupling 13 is connected between the upper end of the upper outer tube 12 and the air-tight slide valve assembly 6, the lower end of the hollow air cylinder 3 is connected with a lower outer tube 14 coaxially mounted outside the lower pump cylinder 2, a lower coupling 15 is connected between the lower end of the lower outer tube 14 and the lower pump cylinder 2, and the lower end of the lower coupling 15 is connected with a double-fixed valve assembly 16; the upper outer pipe 12 and the lower outer pipe 14 are arranged, so that the overall strength of the oil well pump is improved, the acting forces such as liquid column load, tail pipe weight and external extrusion are all acted on the outer pipes, and the pressure of the inner wall and the outer wall is balanced during working; the hollow gas storage cavity 4 can collect gas and open a channel for the gas in the pump, so that the filling coefficient of the liquid in the pump cylinder is increased, the gas-liquid ratio in the pump is reduced, the interference of the gas is eliminated, and the improvement of the pump efficiency is facilitated; the air-proof slide valve assembly 6 is sealed with the sealing barrel 5, during down stroke, the air-proof slide valve assembly 6 is closed in time, the plunger 8 is not acted by the pressure of the liquid column any more, and the traveling valve assembly 10 can be opened rapidly to effectively prevent air lock. The utility model discloses structure safe and reliable, intensity are high, the working process is safe controllable, contain gas well, deep well, the operation of air lock card pump well in the height, can effectively avoid the card pump phenomenon that air lock phenomenon and deep well pump barrel atress that cause warp because of containing gas and cause.
An exhaust passage 17 communicated with the hollow air storage cavity 4 is arranged between the pull rod 11 and the upper pump barrel 1, referring to fig. 2, and an exhaust port 18 communicated with the exhaust passage 17 is arranged on the air-tight slide valve assembly 6. During the upstroke, the gas stored in the hollow gas storage cavity 4 can enter the gas-tight slide valve assembly 6 through the exhaust passage 17 and be exhausted from the exhaust port 18; during the down stroke, the air outlet 18 is closed in time, the plunger 8 is not acted by the pressure of the liquid column any more, the traveling valve assembly 10 can be opened rapidly, and the air lock phenomenon is effectively prevented.
The lower end of the upper pump cylinder 1 is provided with a guide exhaust extension pipe 19 extending into the hollow air storage cylinder 3 in an extending mode, and a gas exchange channel 20 is arranged on the pipe wall of the guide exhaust extension pipe 19. The guide exhaust extension pipe 19 extends to the lower end of the hollow air storage cylinder 3, the hollow air storage cylinder 3 enables the guide exhaust extension pipe 19 and the lower pump cylinder 2 to be in a butt joint state, the guide effect of the upper pump cylinder 1 and the lower pump cylinder 2 is achieved, the coaxiality of the upper pump cylinder 1 and the lower pump cylinder 2 is convenient to guarantee, blocking caused by different shafts in the movement process of the plunger 8 is prevented, and the working reliability is high; the gas exchange channel 20 is provided with a plurality of exhaust holes along the outer wall of the guide exhaust extension pipe 19; the guide exhaust extension pipe 19 is an integrally processed structure, and the shape of the exhaust hole can be a circular shape or a long groove shape, so as to be specific to effectively perform gas inlet and outlet exchange.
An upper cylinder centering block 21 is arranged between the upper pump cylinder 1 and the upper outer pipe 12; a lower barrel centering block 22 is disposed between the lower pump barrel 2 and the lower outer tube 14. By adding the upper cylinder centering block 21 and the lower cylinder centering block 22, the pump cylinder has strong deformation resistance, so that the load borne by the pump cylinder is reduced, the gap leakage is reduced, and the pump clamping phenomenon is reduced.
The double-fixed valve assembly 16 is of an anti-falling fixed valve structure, the falling space is large, and the blockage of an oil inlet caused by the falling of sand grains is avoided. The double fixed valve assembly 16 is well known to those skilled in the art, and its specific structure will not be described herein.
The plunger 8 is a stainless steel plunger 8; the lower compression joint 9 is a stainless steel joint. The stainless steel plunger 8 and the stainless steel joint are made of special stainless steel, the corrosion resistance is 3-5 times that of martensitic stainless steel, the strength and plasticity indexes are enhanced, the service life of the pump is prolonged, the pump inspection period is prolonged, and the oil extraction benefit is improved.
The utility model discloses a theory of operation does:
during the upstroke, the pull rod 11 drives the plunger 8 to move upwards, the double-fixed valve assembly 16 is opened, the traveling valve assembly 10 is closed, when the plunger 8 moves upwards to the hollow air storage cavity 4, the hollow air storage cavity 4 is communicated with the lower cavity at the moment, the air in the liquid at the lower part of the pump cylinder rises and enters the cavity of the hollow air storage cavity 4, and meanwhile, the air-proof slide valve assembly 6 is opened, the air is discharged, and the air lock phenomenon can be effectively prevented;
during the down stroke, the pull rod 11 drives the plunger 8 to move downwards, the double-fixed valve assembly 16 is closed, the air-tight slide valve assembly 6 is closed, negative pressure is formed in the cavity, the traveling valve assembly 10 is rapidly opened, when the plunger 8 moves downwards to the hollow air storage cavity 4, the upper pump cylinder 1 is communicated with the hollow air storage cavity 4, at the moment, gas stored in the hollow air storage cavity 4 is discharged through the upper pump cylinder 1, meanwhile, the oil well pump is additionally provided with an outer pipe structure, the overall strength of the oil well pump is improved, meanwhile, a centering block is additionally arranged outside the pump cylinder, acting forces such as liquid column load, tail pipe weight and external extrusion are all acted on the outer pipe, the pressure of the inner wall and the outer wall is balanced during working, the deformation resistance of the pump cylinder is high, the load borne by the pump cylinder is reduced, gap leakage is reduced.
The basic principles, main features and advantages of the present invention have been shown and described above. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. Difunctional gas-tight strenghthened type oil-well pump is including last pump barrel and lower pump barrel, its characterized in that: a hollow air storage cylinder is connected between the upper pump cylinder and the lower pump cylinder, and a hollow air storage cavity is formed between the hollow air storage cylinder and the upper pump cylinder; the upper end of the upper pump cylinder is connected with a sealing cylinder, and the upper end of the sealing cylinder is connected with an air-tight slide valve assembly communicated with the hollow air storage cavity in a sealing manner; a plunger is arranged in the upper pump barrel and the lower pump barrel in a sliding manner, the lower end of the plunger is connected with a lower compression joint, the upper end of the plunger is connected with a traveling valve assembly, and the upper end of the traveling valve assembly is connected with a pull rod matched with the air-tight slide valve assembly; the upper end of the hollow air cylinder is connected with an upper outer tube coaxially mounted outside the upper pump cylinder, an upper coupling of the pump cylinder is connected between the upper end of the upper outer tube and the air-proof sliding valve assembly, the lower end of the hollow air cylinder is connected with a lower outer tube coaxially mounted outside the lower pump cylinder, a lower coupling is connected between the lower end of the lower outer tube and the lower pump cylinder, and the lower end of the lower coupling is connected with a double-fixed valve assembly.
2. The dual-function gas-proof reinforced oil well pump of claim 1, characterized in that: the pull rod with go up between the pump barrel be provided with the exhaust passage of cavity formula gas receiver intercommunication, be provided with on the gas-tight slide valve assembly with the gas vent of exhaust passage intercommunication.
3. The dual-function gas-proof reinforced oil well pump of claim 1, characterized in that: the lower end of the upper pump cylinder is provided with a guide exhaust extension pipe extending into the hollow air storage cylinder in an extending mode, and a gas exchange channel is arranged on the pipe wall of the guide exhaust extension pipe.
4. The dual-function gas-proof reinforced oil well pump of claim 1, characterized in that: an upper cylinder righting block is arranged between the upper pump cylinder and the upper outer pipe.
5. The dual-function gas-proof reinforced oil well pump of claim 1, characterized in that: and a lower cylinder righting block is arranged between the lower pump cylinder and the lower outer pipe.
6. The dual-function gas-proof reinforced oil well pump of claim 1, characterized in that: the double-fixed valve assembly is of an anti-falling object fixed valve structure.
7. The dual-function air-proof reinforced oil well pump as defined in any one of claims 1 to 6, characterized in that: the plunger is a stainless steel plunger; the lower compression joint is a stainless steel joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921251118.6U CN210218063U (en) | 2019-08-02 | 2019-08-02 | Double-function gas-proof reinforced oil-well pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921251118.6U CN210218063U (en) | 2019-08-02 | 2019-08-02 | Double-function gas-proof reinforced oil-well pump |
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| Publication Number | Publication Date |
|---|---|
| CN210218063U true CN210218063U (en) | 2020-03-31 |
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| CN201921251118.6U Active CN210218063U (en) | 2019-08-02 | 2019-08-02 | Double-function gas-proof reinforced oil-well pump |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112065697A (en) * | 2020-10-23 | 2020-12-11 | 山东威马泵业股份有限公司 | Double-channel slide valve whole-course oil well pump and special slide valve |
-
2019
- 2019-08-02 CN CN201921251118.6U patent/CN210218063U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112065697A (en) * | 2020-10-23 | 2020-12-11 | 山东威马泵业股份有限公司 | Double-channel slide valve whole-course oil well pump and special slide valve |
| CN112065697B (en) * | 2020-10-23 | 2024-05-24 | 山东威马泵业股份有限公司 | Double-channel slide valve whole-course oil pump and special slide valve |
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