CN217761288U - Gas-proof oil-well pump - Google Patents
Gas-proof oil-well pump Download PDFInfo
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- CN217761288U CN217761288U CN202222183552.3U CN202222183552U CN217761288U CN 217761288 U CN217761288 U CN 217761288U CN 202222183552 U CN202222183552 U CN 202222183552U CN 217761288 U CN217761288 U CN 217761288U
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- gas
- pump barrel
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- barrel
- plunger
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Abstract
The utility model discloses a gas-tight oil-well pump, including the pump barrel, the plunger assembly has in the pump barrel, the plunger assembly includes the plunger, the lower extreme of pump barrel even has the standing valve assembly, still including the top connection, the pump barrel outside is provided with the outer tube, be formed with annular air chamber between pump barrel and the outer tube, the lower extreme of pump barrel and outer tube is connected with the standing valve assembly through the intermediate head, the lower extreme of pump barrel and outer tube all with intermediate head thread seal connection, still including setting up the centering cover between pump barrel and outer tube upper end, thread seal connection between the upper end of pump barrel and the centering cover, the upper end of outer tube with between the top connection thread seal connection, be equipped with on the outer wall of centering cover and form the sealing washer of sealed fit between the inner wall of outer tube; the pump barrel is provided with a gas-liquid exchange middle barrel section, the length of the gas-liquid exchange middle barrel section is smaller than that of the plunger, and gas-liquid exchange holes are uniformly distributed on the barrel wall of the gas-liquid exchange middle barrel section at intervals. The utility model discloses can effectively prevent that the airlock from producing in the use.
Description
Technical Field
The utility model relates to an oil-well pump is used in oil field exploitation, and specifically speaking relates to a prevent gas oil-well pump.
Background
In oil wells in the middle and later stages of oil field development or oil wells with low dynamic liquid level, especially in oil wells with high oil-gas ratio, the influence of gas on the pumping efficiency of an oil well pump is very serious. The air occupies partial volume of the pump cavity, and can reduce the fullness of the oil well pump, lead to the delay of the opening of a valve ball of the oil well pump and even cause the phenomenon of air lock. The pneumatic lock can also generate hydraulic impact to cause the vibration of a sucker rod pumping system, accelerate the damage of underground equipment such as a sucker rod string, a valve rod, a valve cover, a pump valve, an oil pipe and the like, cause short pump detection period and frequent operation, and increase the oil extraction cost.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a can prevent effectively that the air-lock from producing, and then can improve the gas-tight oil-well pump of oil recovery efficiency.
In order to solve the technical problem, the utility model relates to a prevent gas oil-well pump, including the pump barrel, have the plunger assembly in the pump barrel, the plunger assembly includes plunger and upper and lower traveling valve, the lower extreme of pump barrel even has the standing valve assembly, and the standing valve casing of standing valve assembly even has the lower clutch, still including the top connection, its characterized in that: the outer side of the pump cylinder is provided with an outer pipe, an annular air chamber is formed between the pump cylinder and the outer pipe, the lower ends of the pump cylinder and the outer pipe are connected with the fixed valve assembly through an intermediate joint, the lower ends of the pump cylinder and the outer pipe are both in threaded sealing connection with the intermediate joint, the pump cylinder further comprises a centering sleeve arranged between the upper ends of the pump cylinder and the outer pipe, the upper end of the pump cylinder is in threaded sealing connection with the centering sleeve, the upper end of the outer pipe is in threaded sealing connection with the upper joint, and a sealing ring in sealing fit with the inner wall of the outer pipe is arranged on the outer wall of the centering sleeve; the pump barrel is provided with a gas-liquid exchange middle barrel section, the length of the gas-liquid exchange middle barrel section is smaller than that of the plunger, and gas-liquid exchange holes are uniformly distributed on the barrel wall of the gas-liquid exchange middle barrel section at intervals.
The utility model discloses in, designed an annular air chamber in the oil-well pump, swabbing in-process about the plunger, through the middle section of thick bamboo of gas-liquid exchange, can be periodic outside the gas escape pump in the pump barrel, reach the purpose of preventing gas, improve the pump efficiency, improve oil recovery efficiency, effectively reduce the possibility that "airlock" takes place.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic main sectional view of the gas-proof oil well pump of the present invention.
Fig. 2 is an enlarged view of the gas-proof oil pump of the present invention, which is divided into two parts along the linebase:Sub>A-base:Sub>A of fig. 1, from the perspective of the structure of the gas-proof oil pump.
Detailed Description
Referring to fig. 1-2, the utility model relates to a prevent gas oil-well pump, including pump barrel 1, plunger assembly 2 has in the pump barrel, and the plunger assembly includes plunger 21 and upper and lower traveling valve 22, 23, the lower extreme of pump barrel 1 even has standing valve assembly 3, and the standing valve cover 31 of standing valve assembly even has lower clutch 32, still including upper clutch 4, its characterized in that: the outer side of the pump cylinder 1 is provided with an outer pipe 5, an annular air chamber 6 is formed between the pump cylinder and the outer pipe, the lower ends of the pump cylinder and the outer pipe are connected with the fixed valve assembly 3 through an intermediate joint 7, the lower end of the pump cylinder and the intermediate joint are tightly screwed by screw threads and then sealed by end faces, the lower end of the outer pipe and the intermediate joint are tightly connected by oil pipe screw threads, the outer hydraulic pump further comprises a centering sleeve 8 arranged between the upper ends of the pump cylinder 1 and the outer pipe 5, the upper end of the pump cylinder 1 and the centering sleeve 8 are tightly screwed by screw threads and then sealed by end faces, the upper end of the outer pipe 5 and the upper joint 4 are tightly connected by oil pipe screw threads, and a sealing ring 9 which is in sealing fit with the inner wall of the outer pipe 5 is arranged on the outer wall of the centering sleeve 8; the pump barrel 1 is provided with a gas-liquid exchange middle barrel section 10, the length of the gas-liquid exchange middle barrel section is smaller than that of the plunger 21, and gas-liquid exchange holes 11 are uniformly distributed on the barrel wall of the gas-liquid exchange middle barrel section at intervals.
The working principle of the utility model is as follows: during the up stroke, the plunger moves upwards, the fixed valve is opened to feed oil, the upper and lower traveling valves are closed to discharge oil, when the lower end of the plunger enters the gas-liquid exchange middle cylinder section, the annular gas chamber is communicated with the lower pump cavity through the gas-liquid exchange hole, part of gas overflowing from the lower pump cavity enters the annular gas chamber, and the liquid in the middle annular gas chamber flows into the lower pump cavity; during the down stroke, the plunger moves downwards, the fixed valve is closed, the gas in the middle and lower pump cavity is compressed, most of the gas enters the annular gas chamber, when the pressure of the liquid at the lower part of the traveling valve is greater than that of the liquid at the upper part of the traveling valve, the upper and lower traveling valves are opened to discharge oil, when the upper end of the plunger enters the middle pump cavity, the gas in the annular gas chamber overflows, meanwhile, the annular gas chamber is filled with well liquid until the down stroke is finished, and a pumping process is completed. The annular air chamber is arranged to open a channel for well fluid gas, the exchange of liquid in the annular air chamber and gas in the lower pump cavity is realized, the filling coefficient of the liquid in the pump barrel is increased, the gas-liquid ratio in the pump is reduced, the interference of gas is eliminated, the pump efficiency is improved, and the occurrence of gas lock and liquid impact is avoided.
Claims (1)
1. The utility model provides a prevent gas-oil pump, includes pump barrel (1), has plunger assembly (2) in the pump barrel, and the plunger assembly includes plunger (21) and upper and lower traveling valve (22, 23), the lower extreme of pump barrel (1) even has standing valve assembly (3), and standing valve cover (31) of standing valve assembly even have lower clutch (32), still including top connection (4), its characterized in that: the outer pipe (5) is arranged on the outer side of the pump barrel (1), an annular air chamber (6) is formed between the pump barrel and the outer pipe, the lower ends of the pump barrel and the outer pipe are connected with the fixed valve assembly (3) through an intermediate joint (7), the lower ends of the pump barrel and the outer pipe are both in threaded sealing connection with the intermediate joint, the outer pump barrel further comprises a centering sleeve (8) arranged between the pump barrel (1) and the upper end of the outer pipe (5), the upper end of the pump barrel (1) is in threaded sealing connection with the centering sleeve (8), the upper end of the outer pipe (5) is in threaded sealing connection with the upper joint (4), and a sealing ring (9) in sealing fit with the inner wall of the outer pipe (5) is arranged on the outer wall of the centering sleeve (8); the pump barrel (1) is provided with a gas-liquid exchange middle barrel section (10), the length of the gas-liquid exchange middle barrel section is smaller than that of the plunger (21), and gas-liquid exchange holes (11) are uniformly distributed on the barrel wall of the gas-liquid exchange middle barrel section at intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222183552.3U CN217761288U (en) | 2022-08-19 | 2022-08-19 | Gas-proof oil-well pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222183552.3U CN217761288U (en) | 2022-08-19 | 2022-08-19 | Gas-proof oil-well pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217761288U true CN217761288U (en) | 2022-11-08 |
Family
ID=83880961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222183552.3U Active CN217761288U (en) | 2022-08-19 | 2022-08-19 | Gas-proof oil-well pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217761288U (en) |
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2022
- 2022-08-19 CN CN202222183552.3U patent/CN217761288U/en active Active
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