CN210623061U - Oil inlet device of oil pump for preventing pin tools from acting halfway - Google Patents
Oil inlet device of oil pump for preventing pin tools from acting halfway Download PDFInfo
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- CN210623061U CN210623061U CN201921659543.9U CN201921659543U CN210623061U CN 210623061 U CN210623061 U CN 210623061U CN 201921659543 U CN201921659543 U CN 201921659543U CN 210623061 U CN210623061 U CN 210623061U
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- well
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Abstract
An oil inlet device of an oil well pump for preventing a pin tool from moving halfway is characterized in that well fluid can flow upwards from the lower part of a check valve and cannot flow downwards from the upper part of the check valve, a communicating groove is arranged in the middle of a communicating joint, a sliding sleeve is arranged in the communicating joint and covers the communicating groove, the sliding sleeve is fixed in the communicating joint through a pin, a piston of the oil well pump which enters from the back can be pushed to the bottom of the communicating joint after the oil well pump is put in place, the bottom of the communicating joint is closed, a thread connected with a pump cylinder of the oil well pump is arranged on the upper part of the communicating joint, the upper part of a connecting pipe is connected with the communicating joint, a connecting point is positioned above the communicating groove, the lower part of the connecting pipe is the check valve, a circulating channel is arranged between the outer wall of the communicating joint and the inside of the connecting pipe, the oil well fluid is arranged below the pump cylinder of the oil well, when the oil pumping pipe is put into the well, the pin on the pin tool cannot be sheared, so that the success of putting the oil pumping pipe column into the well is ensured.
Description
Technical Field
The utility model relates to a device that oil field oil pumping well was used with the oil-well pump is supporting, is an oil-well pump oil feed device that prevents pin class instrument midway effect.
Background
Sometimes, a pin-type tool is put into an oil pumping pipe column, for example, a Chinese patent 200410039801.5 "tubing anchor", a sealing cylinder is fixed by an anti-moving pin, belongs to the pin-type tool, and is installed on an oil well pump. The tools have larger outer diameter and small difference with the inner diameter of the casing, and the tools walk in the casing like pistons when going down in the casing, because the casing is filled with well fluid, when the walking speed is higher, pressure difference is formed between two ends of a pin type tool with large diameter, namely the pressure of the lower end of the tool with large diameter is higher than that of the upper end, the lower end of the tool with large diameter is communicated with an oil pipe on a pump through an oil inlet valve of an oil well pump, namely high pressure formed when the tool with large diameter goes down the well quickly can be transmitted into the oil pipe on the pump, an oil pipe column is formed by connecting oil pipes with the length of more than 9 meters, the tool is lifted to be in a vertical state by an operating machine and is put into the well, after one oil pipe is put down, the other oil pipe is lifted to be in a vertical state by the operating machine and is connected with the oil pipe which has gone down the well, the oil pipe column has a pause state in the process, the pressure at the lower end of the tool is reduced, the pressure in the oil pipe on the pump can not be reduced under the action of an oil inlet valve on the oil well pump, so that a pressure difference is formed between the inside and the outside of the large-diameter pin tool, the pressure difference is increased along with the increase of the well descending depth, when the pressure difference is increased to exceed the bearing capacity of a pin on the pin tool, the pin on the pin tool can be sheared off, the middle action of the pin tool is realized, when the pin tool acts midway, the oil pumping pipe column can not be descended, and the oil pumping pipe column can not be descended to the designed position, so that the operation can not be successful if the pin tool acts midway, and the great economic loss is caused.
Disclosure of Invention
The utility model aims at designing an oil-well pump oil feed device that prevents pin class instrument midway action, when making it have the oil-well pump tubular column of pin class instrument under, the internal pressure of pin class instrument is not higher than external pressure, prevents that the pin from being cut off, guarantees that the oil pumping pipe tubular column is gone into the well successfully.
The purpose of the utility model is realized like this: the well fluid can flow upwards from the lower part of the check valve and cannot flow downwards from the upper part of the check valve, a communicating groove is formed in the middle of the communicating joint, the sliding sleeve is installed in the communicating joint and covers the communicating groove, the sliding sleeve is fixed in the communicating joint through the pin, after the well is put in place, a piston of an oil well pump which goes in from the back down can be pushed to the bottom of the communicating joint, the bottom of the communicating joint is closed, the upper part of the communicating joint is provided with a thread connected with a pump cylinder of the oil well pump, the upper part of the connecting pipe is connected with the communicating joint, a connecting point is located above the communicating groove, the lower part of the connecting pipe is the check valve, a loop channel is formed between the outer wall of the communicating joint and the inner part of the connecting pipe, the upper part of the loop channel is communicated with the communicating groove, and the lower part of the loop channel is communicated.
The bottom of the communicating joint is sealed by a plug, and the plug is connected with the bottom of the communicating joint.
The lower part of the sliding sleeve is provided with a clamping shaft, the upper part of the screwed plug is provided with a clamping hole, the clamping shaft is matched and fixed into a whole with the clamping hole after the sliding sleeve falls down under the action of axial force, and the clamping shaft is connected with the clamping hole in a static matching way.
The utility model has the advantages that: the utility model discloses install under the pump barrel of oil-well pump, in the well liquid can not get into the pump when going into the well, the internal pressure of the pin class instrument of connecting on the tubular column can not be higher than external pressure, and the pin on the pin class instrument can not cut off when going into the well, can prevent that pin class instrument from moving midway, guarantees that the oil pumping tubular column is gone into the well successfully.
Drawings
Fig. 1 is a structural diagram of the present invention.
Detailed Description
The following describes an embodiment of the present invention in detail with reference to fig. 1.
As shown in figure 1, the embodiment of the utility model comprises a communicating joint 1, a connecting pipe 2, a pin 3, a sliding sleeve 4 and a check valve 6, well fluid can flow upwards from the lower part of the check valve 6 and can not flow downwards from the upper part of the check valve 6, the middle part of the communicating joint 1 is provided with a communicating groove 1-1, the sliding sleeve 4 is arranged in the communicating joint 1, the sliding sleeve 4 covers the communicating groove 1-1, the sliding sleeve 4 is fixed in the communicating joint 1 by the pin 3, the well can be pushed to the bottom of the communicating joint 1 by an oil well pump piston which enters from the bottom after the well is put in place, the bottom of the communicating joint 1 is closed, the upper part of the communicating joint 1 is provided with a thread connected with a pump cylinder of an oil well pump, the upper part of the connecting pipe 2 is connected with the communicating joint 1, the connecting point is positioned above the communicating groove 1-1, the lower part of the connecting pipe 2 is provided with the, a circulation channel 7 is arranged between the outer wall of the communication joint 1 and the inside of the connecting pipe 2, the upper part of the circulation channel 7 is communicated with the communication groove 1-1, and the lower part of the circulation channel 7 is communicated with the upper part of the check valve 6.
The bottom of the communicating joint 1 is sealed by a plug 5, and the plug 5 is connected with the bottom of the communicating joint 1.
The lower part of the sliding sleeve 4 is provided with a clamping shaft 4-1, the upper part of the plug 5 is provided with a clamping hole 5-1, the clamping shaft 4-1 and the clamping hole 5-1 are matched and fixed into a whole under the action of axial force after the sliding sleeve 4 falls down, and the clamping shaft 4-1 and the clamping hole 5-1 are in static matching connection.
The utility model discloses install under the pump barrel of oil-well pump, in the well liquid can not get into the pump when going into the well, the internal pressure of connecting the pin class instrument on the pump barrel of oil-well pump can not be higher than external pressure, and pin class instrument can not move midway.
After the oil pumping pipe column is lowered to a designed position, a piston of an oil well pump is connected to the lower portion of the oil pumping rod and then is put into the pump barrel, after the lower portion of the piston of the oil well pump touches the sliding sleeve 4, the sliding sleeve 4 is pressed away under the action of the weight of the oil pumping rod, so that the sliding sleeve is not covered on the communicating groove 1-1, well fluid can enter the pump through the communicating groove 1-1, an oil inlet channel is opened, the clamping shaft 4-1 at the lower portion of the sliding sleeve 4 is pressed into the clamping hole 5-1 on the plug 5 by the gravity of the oil pumping rod column, the sliding sleeve 4 is fixed on the plug 5, the sliding sleeve 4 cannot be pushed by well fluid with bypass flow to rise and then cover the communicating groove 1-1, and. The check valve 6 is an oil inlet valve of the existing oil well pump, and the check valve 6 also plays a role in the oil inlet valve of the oil well pump when working.
Claims (3)
1. The utility model provides a prevent that pin class instrument from moving oil-well pump oil feed device of effect midway, connects (1), connecting pipe (2), pin (3), sliding sleeve (4), single current valve (6) including the UNICOM, well fluid can follow the lower part upflow of single current valve (6), can not follow the upper portion downflow of single current valve (6), characterized by: the middle part of the communication joint (1) is provided with a communication groove (1-1), the sliding sleeve (4) is arranged in the communication joint (1), the sliding sleeve (4) covers the communication groove (1-1), the sliding sleeve (4) is fixed in the communication joint (1) through a pin (3), after the well is put in place, an oil well pump piston which is put in the well can be pushed to the bottom of the communication joint (1), the bottom of the communication joint (1) is closed, the upper part of the communication joint (1) is provided with a thread connected with an oil well pump barrel, the upper part of the connecting pipe (2) is connected with the communication joint (1), a connecting point is positioned above the communication groove (1-1), the lower part of the connecting pipe (2) is provided with a check valve (6), a circulation channel (7) is arranged between the outer wall of the communication joint (1) and the inner part of the connecting pipe (2), and the upper part of the circulation channel (7) is communicated with the, the lower part of the circulation channel (7) is communicated with the upper part of the check valve (6).
2. The oil inlet device of the oil pump for preventing the midway action of the pin tool according to claim 1, which is characterized in that: the bottom of the communicating joint (1) is sealed by a plug (5), and the plug (5) is connected with the bottom of the communicating joint (1).
3. The oil inlet device of the oil pump for preventing the midway action of the pin tool according to claim 2, which is characterized in that: the lower part of the sliding sleeve (4) is provided with a clamping shaft (4-1), the upper part of the plug (5) is provided with a clamping hole (5-1), the clamping shaft (4-1) and the clamping hole (5-1) are matched and fixed into a whole after the sliding sleeve (4) falls down under the action of axial force, and the clamping shaft (4-1) and the clamping hole (5-1) are in static matching connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921659543.9U CN210623061U (en) | 2019-10-01 | 2019-10-01 | Oil inlet device of oil pump for preventing pin tools from acting halfway |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921659543.9U CN210623061U (en) | 2019-10-01 | 2019-10-01 | Oil inlet device of oil pump for preventing pin tools from acting halfway |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210623061U true CN210623061U (en) | 2020-05-26 |
Family
ID=70759553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921659543.9U Active CN210623061U (en) | 2019-10-01 | 2019-10-01 | Oil inlet device of oil pump for preventing pin tools from acting halfway |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210623061U (en) |
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2019
- 2019-10-01 CN CN201921659543.9U patent/CN210623061U/en active Active
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