CN217270129U - Check valve for oil well pipe conveying operation - Google Patents
Check valve for oil well pipe conveying operation Download PDFInfo
- Publication number
- CN217270129U CN217270129U CN202123422933.4U CN202123422933U CN217270129U CN 217270129 U CN217270129 U CN 217270129U CN 202123422933 U CN202123422933 U CN 202123422933U CN 217270129 U CN217270129 U CN 217270129U
- Authority
- CN
- China
- Prior art keywords
- main body
- sealing
- sealing ball
- ball seat
- check valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Check Valves (AREA)
Abstract
The utility model belongs to the technical field of oil field production equipment, in particular to a check valve for oil well pipe transportation operation, which comprises a main body, a sealing ring, a sealing ball seat, a sealing ball, a compression spring and a spring hoop; the upper joint of the main body is an internal thread, the lower joint of the main body is an external thread, the sealing ring and the sealing ball seat are respectively arranged in a ball seat mounting hole and a sealing mounting hole in the inner wall of the main body, and the sealing ball seat is connected with the main body in a sealing way through the sealing ring; the sealing ball is pressed and installed at the outer end of the sealing ball seat through a compression spring; the spring hoop is sleeved in the annular groove of the main body, and the compression spring is pressed on the sealing ball and the spring hoop. The problem of in getting up, down the oil pipe operation in preventing that the well fluid in the sleeve pipe from entering into the oil pipe is solved, do not influence the positive well-flushing simultaneously again. The hydraulic oil pipe has the advantages of simple structure, quick and convenient use, and the liquid in the oil pipe automatically flows back into the sleeve pipe by virtue of the hydraulic pressure difference in the operation of pulling out the oil pipe, thereby realizing the environment-friendly operation.
Description
Technical Field
The utility model belongs to the technical field of the oil field production facility, concretely relates to oil well pipe transportation operation single current valve.
Background
In the operation of lifting and lowering the oil pipe, in order to prevent the well fluid in the sleeve from entering the oil pipe and simultaneously not influencing the forward well washing problem, a check valve which is simple in structure and rapid and convenient to use is needed. Therefore, it is necessary to design a check valve for oil well pipe transportation operation.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an oil well pipe is defeated and is operated single current valve has solved and has prevented that the well liquid in the cover pipe from entering the problem in the oil pipe operation of playing, down, does not influence the positive well-flushing simultaneously again. The oil pipe automatic return device is simple in structure and rapid and convenient to use, liquid in the oil pipe automatically flows back into the sleeve pipe by means of hydraulic pressure difference in the oil pipe lifting and discharging operation, and environment-friendly operation is achieved. The oil well oil pipe setting device is safe and environment-friendly, and is applied to the operation of oil well oil pipe setting and oil pipe setting.
The utility model adopts the technical proposal that: a check valve for oil well pipe conveying operation comprises a main body, a sealing ring, a sealing ball seat, a sealing ball, a compression spring and a spring hoop; the upper joint of the main body is an internal thread, the lower joint of the main body is an external thread, the sealing ring and the sealing ball seat are respectively arranged in a ball seat mounting hole and a sealing mounting hole in the inner wall of the main body, and the sealing ball seat is connected with the main body in a sealing way through the sealing ring; the sealing ball is pressed and installed at the outer end of the sealing ball seat through a compression spring; the spring hoop is sleeved in the annular groove of the main body, and the compression spring is pressed on the sealing ball and the spring hoop.
Further, the main body is made of high-quality carbon steel.
Furthermore, the sealing ball seat, the sealing ball and the compression spring are made of stainless steel.
Further, the main body and the spring hoop realize corrosion prevention through blackening treatment.
The utility model has the advantages that: the check valve for oil well pipe conveying operation solves the problem that well fluid in a sleeve pipe is prevented from entering an oil pipe in the oil pipe lifting and lowering operation, and meanwhile positive well flushing is not influenced. The hydraulic pressure difference type check valve is simple in structure and rapid and convenient to use, liquid in the oil pipe automatically flows back into the sleeve pipe by virtue of hydraulic pressure difference in the operation of the oil pipe, environment-friendly operation is realized, and the transverse valve type check valve is designed, so that the rod pipe fitting is not influenced to pass through the oil pipe. The oil well oil pipe setting device is safe and environment-friendly, and is applied to the operation of oil well oil pipe setting and oil pipe setting.
Drawings
Fig. 1 is a schematic structural diagram of the first embodiment.
Detailed Description
The first embodiment.
Referring to fig. 1, the check valve for oil well pipe transportation operation comprises a main body 1, a sealing ring 2, a sealing ball seat 3, a sealing ball 4, a compression spring 5 and a spring hoop 6; the upper joint of the main body 1 is an internal thread, the lower joint of the main body is an external thread, the sealing ring 2 and the sealing ball seat 3 are respectively arranged in a ball seat mounting hole and a sealing mounting hole in the inner wall of the main body 1, and the sealing ball seat 3 is hermetically connected with the main body 1 through the sealing ring 2; the sealing ball 4 is pressed at the outer end of the sealing ball seat 3 through a compression spring 5; the spring hoop 6 is sleeved in the annular groove of the main body 1, and the compression spring 5 is pressed on the sealing ball 4 and the spring hoop 6; the main body 1 is made of high-quality carbon steel; the sealing ball seat 3, the sealing ball 4 and the compression spring 5 are made of stainless steel; the body 1 and the spring band 6 are protected against corrosion by a blackening process.
The check valve is connected with the lower part of an oil pipe which goes into a well, when the pipe is conveyed to go into the well, well fluid passing through an annular space cannot be connected into the oil pipe, high-pressure fluid is input into the oil pipe through the ground, and the check valve is jacked open by the high-pressure fluid, so that forward well flushing is realized. When the oil pipe needs to be lifted, the liquid in the oil pipe automatically flows back into the sleeve pipe under the action of pressure difference, so that the oil pipe lifted from the wellhead has no pollution to the operation field.
When the valve is applied to bar throwing and bar throwing initiation perforation, the lower end of the valve body is connected to the upper end of a perforating gun, and the upper end of the valve body is connected to the lower end of a well descending oil pipe and is sequentially put into a sleeve. Firstly, a perforating gun is put into a well mouth, then a check valve is connected to the upper end of the perforating gun, the upper end of a check valve is connected to the lower end of an oil pipe which is put into the well, the oil pipe is sequentially connected from the well to a perforating section, and a detonating throwing rod is thrown into an inner hole of the oil pipe at the well mouth for detonating.
When the high-pressure flushing device is applied to flushing operation, the check valve is connected to the lower end of a downhole oil pipe, the upper end of the valve body is connected to the lower end of the downhole oil pipe, a blind joint is used for plugging a lower end hole of the check valve, the lower end of the flushing oil pipe is connected to the upper end of the valve body, the upper end of the valve body is connected to the lower end of the downhole oil pipe, the oil pipe is sequentially connected to the downhole to a specified well depth, high-pressure flushing liquid is filled into the oil pipe at a well mouth, the check valve is opened by the high-pressure flushing liquid, and the flushing liquid is enabled to be cleaned.
Claims (6)
1. The utility model provides an oil well pipe transportation operation check valve which characterized in that: the check valve comprises a main body (1), a sealing ring (2), a sealing ball seat (3), a sealing ball (4), a compression spring (5) and a spring hoop (6); the upper joint of the main body (1) is an internal thread, the lower joint of the main body is an external thread, the sealing ring (2) and the sealing ball seat (3) are respectively arranged in a ball seat mounting hole and a sealing mounting hole in the inner wall of the main body (1), and the sealing ball seat (3) is hermetically connected with the main body (1) through the sealing ring (2); the sealing ball (4) is pressed at the outer end of the sealing ball seat (3) through a pressing spring (5); the spring hoop (6) is sleeved in the annular groove of the main body (1), and the compression spring (5) is pressed on the sealing ball (4) and the spring hoop (6).
2. The check valve for oil well pipe transportation operation as claimed in claim 1, wherein: the main body (1) is made of high-quality carbon steel.
3. The check valve for oil well pipe transportation operation as claimed in claim 1, wherein: the sealing ball seat (3), the sealing ball (4) and the compression spring (5) are made of stainless steel.
4. The check valve for oil well pipe transportation operation as claimed in claim 1, wherein: the sealing ball seat (3) is made of stainless steel.
5. The check valve for oil well pipe transportation operation as claimed in claim 1, wherein: the sealing ball (4) is made of stainless steel.
6. The check valve for oil well pipe transportation operation as claimed in claim 1, wherein: the compression spring (5) is made of stainless steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123422933.4U CN217270129U (en) | 2021-12-31 | 2021-12-31 | Check valve for oil well pipe conveying operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123422933.4U CN217270129U (en) | 2021-12-31 | 2021-12-31 | Check valve for oil well pipe conveying operation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217270129U true CN217270129U (en) | 2022-08-23 |
Family
ID=82893267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123422933.4U Active CN217270129U (en) | 2021-12-31 | 2021-12-31 | Check valve for oil well pipe conveying operation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217270129U (en) |
-
2021
- 2021-12-31 CN CN202123422933.4U patent/CN217270129U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201031662Y (en) | Down-hole controllable type boring tool by-pass valve | |
| CN108952662B (en) | Large-span well staged hydraulic impact fracturing string and implementation method thereof | |
| CN204402451U (en) | A kind of hydraulic control single flow device for the protection of underground double-pipe annular space | |
| CN217270129U (en) | Check valve for oil well pipe conveying operation | |
| CN205445548U (en) | Outer sliding sleeve formula hydraulic pressure bleeder | |
| CN204312025U (en) | A kind of outer sliding sleeve can closing switch | |
| CN110513070B (en) | Flap type downhole oil pipe hydraulic control blowout preventer | |
| CN105298443B (en) | Oil pipe blowout, gaslift and pressure break connection make method under oil pipe float valve and insufficient balance well completion | |
| CN206190235U (en) | Beam -pumping unit stops sucker rod linkage for well | |
| CN215812291U (en) | Water pressure test device | |
| CN110056325A (en) | The pressure testing device and its pressure-measuring method of sucker rod pumping well wellhead installation | |
| CN205778779U (en) | The eccentric injection mandrel of pressure opened by a kind of band | |
| CN210858637U (en) | Turning plate type underground oil pipe hydraulic control blowout preventer | |
| CN104453753A (en) | Oil pipe anti-overflow tool for direct flushing and indirect flushing | |
| CN212671617U (en) | Temporary gas-plugging slurry lifting and discharging pipe column | |
| CN210799331U (en) | Universal impact open type closed controller on oil well pump | |
| CN203769669U (en) | Surge pressure control nipple | |
| CN107120102A (en) | Long stroke acid fracturing linkage discharge opeing oil well pump | |
| CN204941405U (en) | A kind of pitching releasing tool | |
| CN201778733U (en) | Hydraulic penetration device between subsea production tree and tubing hanger | |
| CN205078216U (en) | Water injection packer | |
| CN211144456U (en) | Gas lift valve for gas lift pipe column for pressure operation | |
| CN111058792A (en) | Coiled tubing perforation-free under-pressure operation-free well completion device and method | |
| CN205277368U (en) | Multi -functional oil pipe float collar | |
| CN204941877U (en) | A kind of oil well pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |