CN212716550U - Multifunctional fluid one-way injection device - Google Patents
Multifunctional fluid one-way injection device Download PDFInfo
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- CN212716550U CN212716550U CN202021607987.0U CN202021607987U CN212716550U CN 212716550 U CN212716550 U CN 212716550U CN 202021607987 U CN202021607987 U CN 202021607987U CN 212716550 U CN212716550 U CN 212716550U
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Abstract
The utility model relates to a one-way injection device of multi-functional fluid, including valve body, top connection and lower clutch, settle in the valve body has water conservancy diversion seat and ball seat combination, top connection and lower clutch are connected respectively to the both ends of valve body, through threaded connection between top connection and the valve body, through threaded connection between valve body and the lower clutch, the valve body outside is equipped with and keeps off the ring and cut the pin bush, keep off through threaded connection between ring and the valve body, keep off and cut through shearing pin joint between the pin bush. The utility model discloses can effectual increase inject the mixing rate of fluid and viscous crude, avoid the exploitation in-process viscous crude to block up the production string, improve the oil field exploitation rate, provide powerful guarantee for going on smoothly of production, yield increase measure behind the viscous crude well completion.
Description
Technical Field
The utility model relates to an oil recovery engineering field, more specifically say, relate to a one-way injection device of multi-functional fluid.
Background
In the process of oil well exploitation, a thick oil production pipe column is usually provided with a fluid one-way injection device, and the device is mainly used in the process of thick oil exploitation, thin oil is injected into the thick oil production pipe column to dilute the thick oil to enhance the thick oil mobility, and the thick oil recovery rate is improved. The conventional fluid one-way injection device has the advantages of single injection fluid, small injection flow channel, weak air tightness and easy blockage in the long-term dilution process, so that the smooth operation of the subsequent dilution operation of an oil well is influenced; and the service cycle of the device greatly increases the maintenance cost of the oil well in the later period.
Disclosure of Invention
The to-be-solved technical problem of the utility model lies in providing a one-way injection device of multi-functional fluid, can effectual increase injection fluid and viscous crude's mixing ratio, avoid the exploitation in-process viscous crude to block up the production string, improve the oil field exploitation rate, provide powerful guarantee for the smooth of production, yield increasing measure after the viscous crude well completion.
The utility model provides a technical scheme that its technical problem adopted is: the multifunctional fluid one-way injection device comprises a valve body, an upper joint and a lower joint, wherein a flow guide seat and a ball seat combination are arranged in the valve body, the two ends of the valve body are respectively connected with the upper joint and the lower joint, the upper joint and the valve body are connected through threads, the valve body and the lower joint are connected through threads, a retaining ring and a shearing pin sleeve are arranged on the outer side of the valve body, the retaining ring and the valve body are connected through threads, and the retaining ring and the shearing pin sleeve are connected through shearing pins.
In the above scheme, a first O-shaped sealing ring is arranged between the upper joint and the valve body.
In the scheme, the upper joint is connected with the valve body through the first inner hexagonal locking screw.
In the above scheme, a second O-shaped sealing ring is arranged between the valve body and the ball seat assembly.
In the above scheme, a third O-ring seal is arranged between the valve body and the shear pin sleeve.
In the above scheme, a fourth O-shaped sealing ring is arranged between the shear pin sleeve, the baffle ring and the valve body.
In the above scheme, a fifth O-shaped sealing ring is arranged between the valve body and the lower joint.
In the above scheme, the valve body is connected with the lower joint through the second inner hexagonal locking screw.
The utility model also provides a use method of one-way injection device of multi-functional fluid, including following step:
in the process of producing the heavy oil well, high-pressure fluid is injected into the annulus, pressure generated by the high-pressure fluid acts on the upper end face of the shear pin sleeve, and when the acting force is greater than the set pressure, the shear pin is sheared to open the one-way fluid injection flow passage;
when the pressure of the annular injection fluid is greater than the production pressure in the production string, the annular fluid acts on the valve ball to push the valve ball to leave the ball seat combination to communicate the annular with the production string, so that the annular fluid is mixed with the thick oil in the string;
when the pressure of the annular injection fluid is smaller than the production pressure in the production string, the production pressure acts on the valve ball, the valve ball is pushed to fall into the ball seat assembly to close the injection flow channel, and the annular fluid is separated from the thick oil in the string.
Implement the utility model discloses a method for using of one-way injection device of multi-functional fluid has following beneficial effect:
1. the multifunctional fluid one-way injection device is pressurized, so that the one-way injection flow channel is opened, and then various types of fluids can be injected through the annular space, so that the functional diversity of the production string is ensured.
2. The utility model discloses an utilize and suppress the hydraulic pressure effect on the ball seat assembly, form the interior external pressure difference between the oil casing to ensure to pour into opening for a long time and fluid unidirectional flow of runner into.
3. Compare with current one-way injection device of multi-functional fluid, the utility model discloses the type has that the leakproofness is strong, but one-way injection runner repetitious switch can satisfy mix rare operation for a long time, also can realize the production well and change into the well simultaneously, functions such as long-term water injection of oil well, gas injection.
Drawings
The invention will be further explained with reference to the drawings and examples, wherein:
FIG. 1 is a schematic view of the multi-functional one-way fluid injection device of the present invention in a closed state;
fig. 2 is a schematic view of the multi-functional fluid one-way injection device of the present invention in an open state.
Detailed Description
In order to clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1-2, the multi-functional fluid one-way injection device of the present invention comprises a valve body 2, an upper joint 1 and a lower joint 8. The flow guide seat 3 and the ball seat combination 4 are arranged in the valve body 2, two groups of symmetrical ball seat combinations 4 are arranged in the valve body 2, the baffle ring 6 and the shear pin sleeve 5 are arranged on the outer side of the valve body 2, the baffle ring 6 is connected with the valve body 2 through threads, and the baffle ring 6 is connected with the shear pin sleeve 5 through the shear pin 7.
The upper joint 1 and the lower joint 8 are connected with the valve body 2 up and down, the upper joint 1 and the valve body 2 are connected through threads, and the valve body 2 and the lower joint 8 are connected through threads.
Be equipped with first O type sealing washer 11 between top connection 1 and the valve body 2, still be connected through first hexagon socket head cap locking screw 9 between top connection 1 and the valve body 2, be equipped with second O type sealing washer 12 between valve body 2 and the ball seat combination 4, be equipped with third O type sealing washer 11 between valve body 2 and the shear pin cover 5, be equipped with fourth O type sealing washer 13 between backing ring 6 and the valve body 2, be equipped with fifth O type sealing washer 10 between valve body 2 and the lower clutch 8, connect through second hexagon socket head cap locking screw 9 between valve body 2 and the lower clutch 8.
The utility model also provides a use method of one-way injection device of multi-functional fluid, including following step:
in the process of producing the heavy oil well, high-pressure fluid is injected into the annulus, the pressure generated by the high-pressure fluid acts on the upper end face of the shear pin sleeve 5, and when the acting force is greater than the set pressure, the shear pin 7 is sheared to open the one-way fluid injection flow passage;
when the pressure of the annular injection fluid is greater than the production pressure in the production string, the annular fluid acts on the valve ball to push the valve ball to leave the ball seat assembly 4 to communicate the annular with the production string, so that the annular fluid is mixed with the thick oil in the string;
when the pressure of the annular injection fluid is smaller than the production pressure in the production string, the production pressure acts on the valve ball to push the valve ball to fall on the ball seat assembly 4 to close the injection flow passage, so that the annular fluid is separated from the thick oil in the string.
While the embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many modifications may be made by one skilled in the art without departing from the spirit and scope of the present invention as defined in the appended claims.
Claims (8)
1. The utility model provides a one-way injection device of multi-functional fluid, its characterized in that, includes valve body, top connection and lower clutch, it has water conservancy diversion seat and ball seat combination to settle in the valve body, top connection and lower clutch are connected respectively at the both ends of valve body, through threaded connection between top connection and the valve body, through threaded connection between valve body and the lower clutch, the valve body outside is equipped with fender ring and shear pin cover, through threaded connection between fender ring and the valve body, keep off and shear pin connects between ring and the shear pin cover through shearing the round pin.
2. The multi-functional fluid one-way injection device according to claim 1, wherein a first O-ring seal is disposed between the upper connector and the valve body.
3. The multi-functional fluid unidirectional injection device of claim 1, wherein, still pass through first allen key screw connection between upper connector and the valve body.
4. The multi-functional fluid one-way injection device of claim 1, wherein a second O-ring seal is disposed between the valve body and the ball seat assembly.
5. The multi-functional fluid one-way injection device of claim 1, wherein a third O-ring seal is disposed between the valve body and the shear pin sleeve.
6. The multi-functional fluid unidirectional injection apparatus of claim 1, wherein a fourth O-ring seal is disposed between said shear pin sleeve, said retainer ring and said valve body.
7. The multi-functional fluid one-way injection device according to claim 1, wherein a fifth O-ring seal is disposed between the valve body and the lower joint.
8. A multi-functional fluid one-way injection device according to claim 1, wherein said valve body is connected to said lower connector by a second socket head cap screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021607987.0U CN212716550U (en) | 2020-08-05 | 2020-08-05 | Multifunctional fluid one-way injection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021607987.0U CN212716550U (en) | 2020-08-05 | 2020-08-05 | Multifunctional fluid one-way injection device |
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| Publication Number | Publication Date |
|---|---|
| CN212716550U true CN212716550U (en) | 2021-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021607987.0U Active CN212716550U (en) | 2020-08-05 | 2020-08-05 | Multifunctional fluid one-way injection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111878036A (en) * | 2020-08-05 | 2020-11-03 | 中石化石油工程技术服务有限公司 | Multifunctional fluid one-way injection device and use method thereof |
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2020
- 2020-08-05 CN CN202021607987.0U patent/CN212716550U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111878036A (en) * | 2020-08-05 | 2020-11-03 | 中石化石油工程技术服务有限公司 | Multifunctional fluid one-way injection device and use method thereof |
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