CN202926265U - Anti-pollution well-washing valve for wellbore of heavy oil well - Google Patents
Anti-pollution well-washing valve for wellbore of heavy oil well Download PDFInfo
- Publication number
- CN202926265U CN202926265U CN 201220697274 CN201220697274U CN202926265U CN 202926265 U CN202926265 U CN 202926265U CN 201220697274 CN201220697274 CN 201220697274 CN 201220697274 U CN201220697274 U CN 201220697274U CN 202926265 U CN202926265 U CN 202926265U
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- Prior art keywords
- valve
- well
- valve ball
- washing
- spring
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Abstract
The utility model relates to an oil exploitation apparatus part, especially to a wellbore anti-pollution well-washing valve used in well washing operation of a heavy oil well. The valve comprises a valve body and a valve ball seat arranged in the valve body, wherein a valve ball is disposed on the valve ball seat, a spring protection tube is disposed below the valve ball seat and is internally provided with a spring, one end of the spring is pressed against the valve ball, and fluid passages communicated with the outside and a valve cavity are disposed on the valve body. When the well-washing valve provided by the utility model is used to perform well washing operation, a washing fluid stays completely in an oil pipe instead of entering a casing pipe, thereby eradicating contact of the fluid with oil layer pore passages and raising efficiency; requirements for and usage amount of the washing fluid are reduced, and oil extraction efficiency after the reproduction is correspondingly raised.
Description
Technical field
The present invention relates to oil exploitation device feature field, particularly a kind of pit shaft anti-pollution well washing valve for the heavy oil wells clean-out service.
Background technology
Heavy oil wells is after operation a period of time, in the pit shaft tube wall, viscosity wax or other dopes increase, and the pit shaft endoporus constantly dwindles, and cause the mechanical load that drags the down-hole plunger displacement pump to increase, modal is that rod string is descending slowly, causes the oil production equipment cisco unity malfunction when serious.Regularly well-flushing is the necessary operating type of viscous crude Oil wells management, but conventional well-flushing mode is at first to enter the stratum through sleeve pipe after the flushing fluid pressurization, and return again the mode on ground after down-hole pressure is saturated on oil pipe, after easily causing water sensitivity polluted reservoir and well-flushing, regeneration is produced and need a large amount of drainings be caused pure this common fault of the oil mass underproduction, has restricted the production efficiency of viscous crude pumpingh well.
Summary of the invention
Defective for the prior art existence, purpose of the present invention provides a kind of pit shaft anti-pollution well washing valve for the heavy oil wells clean-out service, change conventional well-flushing mode into the technology for washing well that self circulates in heavy oil wells pit shaft oil pipe, stop the water sensitivity polluted reservoir, solve a heavy crude petroleum exploitation difficult problem.
Its technical scheme is: comprise valve body and in the valve ball seat that is provided with, the valve ball seat is provided with valve ball, it is characterized in that: described valve ball seat has spring protective tube, and spring is installed in it, and an end of spring is resisted against on described valve ball; Described valve body is provided with and is communicated with fluid passage extraneous and valve pocket.
Such scheme can also further be improved to:
Described valve body is comprised of the upper and lower link by screwed connection, and end both is respectively equipped with screw thread; Such as the pin thread of screw thread for being used for being connected with hollow rod of upper link end, the screw thread of lower link end is for for the box that is connected with the connecting rod of plunger displacement pump.
The screw thread of described upper link below be provided with can with the spanner side of spanner compounding practice, be convenient to installation and the dismounting of this device and hollow rod, plunger displacement pump connecting rod.
This apparatus structure is simple, reasonable in design; safe and convenient to use; it is reformed and innovated on the basis of common valve; install guard and forced refluence spring additional; when having guaranteed timely and accurately to shut down, the return of valve ball is closed; make this important oil production equipment of submersible electric pump be able to good operation in inclined shaft or level of approximation well, guarantee the running life of submersible electric pump when inclined shaft or level of approximation well are used.
Compared with prior art, use the thick oil well bore anti-pollution well washing valve in the utility model to carry out clean-out service, flushing fluid rests on fully in oil pipe and does not enter sleeve pipe, stopped to contact with the oil reservoir duct, improved usefulness, to the relative reduce that requires of flushing fluid, use amount reduces relatively simultaneously, and the corresponding oil recovery efficiency that improves regeneration postpartum.
Description of drawings
Fig. 1 is the structural representation of a kind of embodiment of the utility model;
Fig. 2 is the A-A sectional drawing (being the cross sectional representation of spanner side) in Fig. 1;
In figure, connect box, the upper connection of 10-pin thread, 11-upper and lower side thread under link under the upper link of 1-, 2-, 3-spring protective tube, 4-spanner side, 5-fluid passage, 6-valve ball, 7-valve ball seat, 8-back-moving spring, 9-.
The specific embodiment
With reference to Fig. 1, a kind of thick oil well bore anti-pollution well washing valve, comprise valve body and in the valve ball seat 7 that is provided with, valve body is comprised of upper and lower link 1,2, both connect by upper and lower side thread 11, and end both is respectively equipped with connection pin thread 10 and lower connection box 9, upper connection pin thread 10 belows also be provided with can with the spanner side 4 of spanner compounding practice; Valve ball seat 7 is provided with valve ball 6, and valve ball seat 7 has spring protective tube 3, and back-moving spring 8 is installed in it, and the upper end of spring is resisted against on valve ball 6; The upper link of valve body is provided with and is communicated with fluid passage 5 extraneous and valve pocket.
Thick oil well bore anti-pollution well washing valve is the ball-and-seat that can open through certain pressure from top to bottom; During use, the upper link 1 of this device is serially connected with the bottommost of hollow rod roofbolt by upper connection pin thread 10, lower link 2 is connected with connecting rod on the plunger displacement pump of down-hole by lower connection box 9, when under normal conditions, the down-hole plunger displacement pump is because of normal operation, the rising of pit shaft internal pressure causes this device to be closed condition; When the regular well-flushing of heavy oil wells, connecting the well-flushing pipeline by the upper end of hollow rod above ground portion polished rod pressurizes to flushing valve from top to bottom, during greater than flushing valve back-moving spring 8 pressure, valve ball 6 namely breaks away from valve ball seat 7 when well-flushing pressure, and compression reseting spring 8 simultaneously; Flushing valve conducting this moment, the fluid passage 5 that flushing fluid is leant on interior hole path and flushing valve through the hollow rod bar enters in oil pipe, from bottom to top return to ground and enter the oil well feed-line in thick oil well bore, having stopped the disadvantage of flushing fluid to stratum extruding polluted reservoir.
In order to match with existing device, the product specification of this valve body and conventional hollow rod be supporting three kinds of Φ 36mm, Φ 40mm, Φ 42mm, and after material selection has corrosion resistance, processing, low-viscosity stainless steel 201 can fall in screw thread.
Valve body pass through flow design: during ground pressurization 3--5 Mpa, by flow 〉=5m
3/ h;
The mechanical pulling force design of valve body: 〉=30KN;
Operating temperature: 〉=250 ℃;
Operating pressure: 〉=35Mpa
Use thick oil well bore anti-pollution well washing valve to carry out clean-out service, flushing fluid rests on fully in oil pipe and does not enter sleeve pipe, has stopped to contact with the oil reservoir duct, improved usefulness, to the relative reduce that requires of flushing fluid, use amount reduces relatively simultaneously, and the corresponding oil recovery efficiency that improves regeneration postpartum.
Claims (4)
1. thick oil well bore anti-pollution well washing valve, comprise valve body and in the valve ball seat that is provided with, the valve ball seat is provided with valve ball, it is characterized in that: described valve ball seat has spring protective tube, and spring is installed in it, and an end of spring is resisted against on described valve ball; Described valve body is provided with and is communicated with fluid passage extraneous and valve pocket.
2. thick oil well bore anti-pollution well washing valve according to claim 1, it is characterized in that: described valve body is comprised of the upper and lower link by screwed connection, and end both is respectively equipped with screw thread.
3. thick oil well bore anti-pollution well washing valve according to claim 2 is characterized in that: the pin thread of screw thread for being used for being connected with hollow rod of described upper link end, the screw thread of lower link end is for for the box that is connected with the connecting rod of plunger displacement pump.
4. according to claim 2 or 3 described thick oil well bore anti-pollution well washing valves is characterized in that: the screw thread below of described upper link be provided with can with the spanner side of spanner compounding practice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220697274 CN202926265U (en) | 2012-12-17 | 2012-12-17 | Anti-pollution well-washing valve for wellbore of heavy oil well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220697274 CN202926265U (en) | 2012-12-17 | 2012-12-17 | Anti-pollution well-washing valve for wellbore of heavy oil well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202926265U true CN202926265U (en) | 2013-05-08 |
Family
ID=48216238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220697274 Expired - Fee Related CN202926265U (en) | 2012-12-17 | 2012-12-17 | Anti-pollution well-washing valve for wellbore of heavy oil well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202926265U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107060667A (en) * | 2017-05-16 | 2017-08-18 | 中国石油天然气股份有限公司 | Tubular pump construction well |
| CN112412370A (en) * | 2020-11-29 | 2021-02-26 | 江苏力克石油机械有限公司 | Well flushing valve |
-
2012
- 2012-12-17 CN CN 201220697274 patent/CN202926265U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107060667A (en) * | 2017-05-16 | 2017-08-18 | 中国石油天然气股份有限公司 | Tubular pump construction well |
| CN112412370A (en) * | 2020-11-29 | 2021-02-26 | 江苏力克石油机械有限公司 | Well flushing valve |
| CN112412370B (en) * | 2020-11-29 | 2023-02-24 | 江苏力克石油机械有限公司 | Well flushing valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130508 Termination date: 20131217 |