CN212479124U - Well flushing device - Google Patents
Well flushing device Download PDFInfo
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- CN212479124U CN212479124U CN202021060599.5U CN202021060599U CN212479124U CN 212479124 U CN212479124 U CN 212479124U CN 202021060599 U CN202021060599 U CN 202021060599U CN 212479124 U CN212479124 U CN 212479124U
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- valve
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- well
- switching rod
- seat
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Abstract
The utility model relates to a well-flushing device belongs to oil field downhole tool. The variable-diameter joint is in threaded connection with the top end of the outer cylinder, the lower end of the outer cylinder is in threaded connection with the valve cover, the lower joint is in threaded connection with the valve cover, the valve seat is located between the valve cover and the lower joint, the valve ball is located on the valve seat, the magnet is arranged in the magnet seat in an interference fit mode, the magnet seat is tightly fixed at the lower end of the switching rod through a tight nail, the spring is sleeved on the upper portion of the switching rod and arranged in the valve cover, the sliding pin is in threaded connection with the valve cover, and the sliding pin is arranged in a reversing groove of the switching rod. The magnetic force structure is adopted, so that the oil field well washing operation is facilitated, and the workload is reduced; and when the well is repaired and the pipe is lifted, the liquid in the oil pipe column can be discharged through the bottom valve, so that the environmental pollution is avoided.
Description
Technical Field
The utility model relates to an oil field is instrument in pit, especially indicates an oil well tubular pump bottom well washer that is used for oil extraction of oil pumping well.
Background
At present, most of oil-well pumps commonly used in oil wells of various oil fields are tube-type oil-well pumps, and a one-way valve, namely a bottom valve, is arranged at the bottom of the pump. The valve mainly comprises a valve cover, a valve ball, a valve seat and a lower connector. When the plunger of the oil well pump moves upwards, the floating valve is opened, the bottom valve ball leaves the valve ball seat, the oil flow channel is opened, and liquid in the oil well ring sleeve can enter the pump cylinder and the oil pipe through the valve. When the plunger moves downwards, the traveling valve is closed, the valve ball is seated on the valve ball seat under the action of liquid pressure and gravity, and the oil flow channel is closed, so that the liquid in the oil pipe and the pump cylinder cannot return to the ring sleeve through the valve. Heretofore, the above-described bottom valve has been widely used because of its simple structure. However, this valve has the following problems due to its unidirectionality: firstly, liquid can only enter the oil pipe through the oil well ring sleeve at the lower part, but can not enter the ring sleeve through the oil pipe at the upper part, so that the normal well-flushing operation can not be implemented; secondly, when the well is repaired and the pipe is lifted, the liquid in the oil pipe column can not be discharged through the bottom valve, and the environmental pollution is easily caused.
Disclosure of Invention
The utility model provides a well washer to solve the unable well washing operation of implementing of existing at present, when the workover plays the pipe operation, can not unload the liquid in the oil pipe tubular column through bottom valve, cause environmental pollution's problem easily.
The utility model adopts the technical proposal that: the variable-diameter joint is in threaded connection with the top end of the outer cylinder, the lower end of the outer cylinder is in threaded connection with the valve cover, the lower joint is in threaded connection with the valve cover, the valve seat is positioned between the valve cover and the lower joint, the valve ball is positioned on the valve seat, the magnet is arranged in the magnet seat in an interference fit mode, the magnet seat is tightly fixed at the lower end of the switching rod through a tight nail, the spring is sleeved on the upper portion of the switching rod and arranged in the valve cover, the sliding pin is in threaded connection with the valve cover and is arranged in a reversing groove of the switching rod;
the reversing groove of the switching rod comprises a long slideway and a short slideway;
the upper cavity of the valve cover is provided with a valve ball limiting block.
The utility model has the advantages of novel structure, convenient oil field well washing operation by adopting a magnetic structure, and reduced workload; and when the well is repaired and the pipe is lifted, the liquid in the oil pipe column can be discharged through the bottom valve, so that the environmental pollution is avoided.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic structural diagram of the switching lever of the present invention.
Detailed Description
The reducer union 1 is in threaded connection with the top end of the outer cylinder 2, the lower end of the outer cylinder 2 is in threaded connection with the valve cover 11, the lower joint 12 is in threaded connection with the valve cover 11, the valve seat 10 is located between the valve cover 11 and the lower joint 12, the valve ball 9 is located on the valve seat 10, the magnet 8 is arranged in the magnet seat 6 in an interference fit mode, the magnet seat 6 is tightly fixed at the lower end of the switching rod 3 through a fastening nail 7, the spring 4 is sleeved on the upper portion of the switching rod 3 and is arranged in the valve cover 11, the sliding pin 5 is in threaded connection with the valve cover 11, and the sliding pin 5 is arranged in a reversing groove 301 of the switching rod 3 and can freely slide up and down;
the reversing slot 301 of the switching rod 3 comprises a long slideway and a short slideway;
the upper cavity of the valve cover 11 is provided with a valve ball limiting block 1101.
The working principle is as follows:
the reducer union 1 at the upper end is connected with an oil well pump through a pump barrel coupling, and the lower joint 12 is connected with a sand prevention device;
1. when oil pumping is needed, the sliding pin 5 is arranged in the long slideway of the reversing groove 301 of the switching rod 3;
when the plunger of the oil well pump moves upwards, the traveling valve is opened, the valve ball 9 leaves the valve seat 10, the oil flow channel is opened, and liquid in the oil well ring sleeve can enter the outer cylinder through the hole on the valve seat 10;
when the plunger moves downwards, the traveling valve is closed, the valve ball 9 sits back on the valve seat 10 under the action of liquid pressure and gravity, and the oil flow channel is closed, so that the liquid in the oil pipe and the pump cylinder cannot return to the ring sleeve through the valve ball 9 and the valve seat 10;
2. when a well needs to be cleaned, a sucker rod is lowered for a certain distance, a plunger is enabled to be arranged on the top end of a switching rod 3, the switching rod 3 is pressed by the plunger, the switching rod 3 descends to the position of a valve ball 9 through a reversing groove, the switching rod 3 is reversed in a short slideway of the reversing groove 301, the magnet 8 at the lower end sucks up the valve ball 9, the valve ball moves upwards to open the valve, well cleaning liquid descends to the position of a valve seat through an annular space between a pump barrel and an oil pipe, the well cleaning liquid in an outer barrel flows back into a ring sleeve through a hole in the valve seat 10, and therefore the valve seat 10, the valve cover 11, the lower connector 12 and the like are cleaned;
after the flushing is finished, the plunger is lifted up to leave the switching rod, the spring 4 is reset to lift the switching rod 3, the valve ball 9 and the magnet 8 are forcibly separated under the action of the valve ball limiting block 1101 in the upper cavity of the valve cover 11, the valve ball 9 is reset to be positioned on the valve seat 10 under the action of liquid pressure and gravity, and the sliding pin 5 is reversed in the long slide way of the switching rod 3; after the plunger returns to the original working position, the oil pumping operation can be continued;
3. when the well is required to be repaired and the pipe is lifted, the operation of well washing is carried out, so that the liquid in the oil pipe column can be discharged through the well washing valve, and the environmental pollution is avoided.
Claims (3)
1. The utility model provides a well washer, reducer union and urceolus top threaded connection, urceolus lower extreme and valve bonnet threaded connection, lower clutch and valve bonnet threaded connection, valve seat are located between valve bonnet and the lower clutch, and the valve ball is located valve seat, its characterized in that: the magnet is arranged in the magnet seat in an interference fit mode, the magnet seat is tightly fixed at the lower end of the switching rod through a tight nail, the spring is sleeved on the upper portion of the switching rod and arranged in the valve cover, the sliding pin is in threaded connection with the valve cover, and the sliding pin is arranged in the reversing groove of the switching rod.
2. A well-flushing device as claimed in claim 1, wherein: the reversing groove of the switching rod comprises a long slideway and a short slideway.
3. A well-flushing device as claimed in claim 1, wherein: the upper cavity of the valve cover is provided with a valve ball limiting block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021060599.5U CN212479124U (en) | 2020-06-10 | 2020-06-10 | Well flushing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021060599.5U CN212479124U (en) | 2020-06-10 | 2020-06-10 | Well flushing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212479124U true CN212479124U (en) | 2021-02-05 |
Family
ID=74417413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021060599.5U Active CN212479124U (en) | 2020-06-10 | 2020-06-10 | Well flushing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212479124U (en) |
-
2020
- 2020-06-10 CN CN202021060599.5U patent/CN212479124U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |