CN205172905U - Level pressure self -balancing oil -well pump blowout preventer - Google Patents
Level pressure self -balancing oil -well pump blowout preventer Download PDFInfo
- Publication number
- CN205172905U CN205172905U CN201520831652.XU CN201520831652U CN205172905U CN 205172905 U CN205172905 U CN 205172905U CN 201520831652 U CN201520831652 U CN 201520831652U CN 205172905 U CN205172905 U CN 205172905U
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- CN
- China
- Prior art keywords
- valve assembly
- piston
- level pressure
- oil
- urceolus
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to a level pressure self -balancing oil -well pump blowout preventer, belong to oil development technical field, by the top connection, the fixed valve assembly, screen pipe and plug are constituteed, install level pressure balancing unit between fixed valve assembly and screen pipe, level pressure balancing unit includes the urceolus, the ejector pin, current -limiting pipe and piston, urceolus threaded connection is between fixed valve assembly and screen pipe, the ejector pin, current -limiting pipe and piston threaded connection in proper order, the ejector pin upper end is arranged in the central through hole of fixed valve assembly ball seat, current -limiting guan shangkai has radial restricted aperture, the piston is the tubular structure, fix in the piston ring through pinning, piston ring threaded connection is in the cavity of the lower part of urceolus. Utilize utility model pump in -process under the operation, can effectively prevent the interior blowout of stratum output liquid follow well head oil pipe, avoid environmental pollution and bodily injury, after the pump construction is accomplished under the operation, can close the fixed valve assembly through the oil pipe pressure testing, make the oil -well pump be in normal operating conditions.
Description
Technical field
The utility model relates to a kind of level pressure self balancing spray-proof device of oil-well pump, belongs to technical field of petroleum extraction, especially relates to for oil-field oil pumper down-hole pump production technology and water injection well snubbing serving process matching measure spray-proof device of oil-well pump.
Background technique
Current oil field at home pumping well recovers the oil the tubing pump that oil well pump used mostly is conventional, because the bottom of tubing pump is with the standing valve assembly (valve, ball valve) of one-way sealing, so, under operation in pump process, when pump downforce is greater than the head of liquid of oil pipe column, standing valve is opened automatically, forms oil flow channel, in well, gas-liquid can to enter on pump in oil pipe column and to rise to ground, easy generation blowout, causes ground pollution, even brings fire safety evaluating accident.The oil well that formation pressure coefficient is large compared with high, well head overflow, have blowout omen, in order to ensure lower pump safety, adopting kill-job measure more, so not only bringing injury to oil reservoir but also increasing operating cost.
Model utility content
The purpose of this utility model is that the blowout that easily occurs in pump process under operation overcoming the existence of above-mentioned prior art causes ground pollution and pump under employing kill-job measure to bring the defect of injury, increase operating cost to oil reservoir, provides a kind of level pressure self balancing spray-proof device of oil-well pump.
The utility model is made up of upper connection, standing valve assembly, screen casing and plug, level pressure Equilibrator is installed between standing valve assembly and screen casing, level pressure Equilibrator comprises urceolus, push rod, current limiting tube and piston, urceolus is threaded between standing valve assembly and screen casing, push rod, current limiting tube are threaded successively with piston, push rod upper end is placed in the central through bore of standing valve assembly ball seat, current limiting tube has radial metering hole, piston is tubular structure, be fixed by a pin in piston ring, piston ring is threaded in the cavity of the bottom of urceolus.
Utilize model utility under operation in pump process, effectively can prevent stratum production fluid from spraying in well mouth oil pipe, avoid environmental pollution and personal injury; After pump has been constructed under operation, standing valve assembly can be closed by oil pipe pressure test, make oil well pump be in normal working.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the technical solution of the utility model is further described in detail.
As shown in Figure 1, the utility model is by upper connection 1, standing valve assembly 2, screen casing 3 and plug 4 form, level pressure Equilibrator 5 is installed between standing valve assembly 2 and screen casing 3, level pressure Equilibrator 5 comprises urceolus 5A, push rod 5B, current limiting tube 5C and piston 5D, urceolus 5A is threaded between standing valve assembly 2 and screen casing 3, push rod 5B, current limiting tube 5C is threaded successively with piston 5D, push rod 5B upper end is placed in the central through bore of standing valve assembly 2 ball seat 2A, current limiting tube 5C has radial metering hole 5E, piston 5D is tubular structure, be fixed by a pin in piston ring 5F, piston ring 5F is threaded in the cavity of the bottom of urceolus 5A.
Under operation in pump process, stratum production fluid is when screen casing 3 enters the metering hole 5E of the current limiting tube 5C of level pressure Equilibrator 5 of the present utility model, the pressure of stratum production fluid is reduced, then ground is risen to through standing valve assembly 2, thus, effectively can prevent stratum production fluid from spraying in well mouth oil pipe, avoid environmental pollution and personal injury.
For improving blowout prevention effect, in described current limiting tube 5C, pressure fixing valve is installed, pressure fixing valve is made up of valve ball 6, level pressure spring 7, valve ball 6 falls to being sitting on the central through bore of piston 5D, level pressure spring 7 is placed in the current limiting tube 5C between valve ball 6 and push rod 5B, when fluid column pressure reduction is greater than the setting pressure of level pressure spring 7, level pressure spring 7 shrinks, open fluid passage, stratum production fluid is when flowing through the metering hole 5E of current limiting tube 5C of level pressure Equilibrator 5 of the present utility model, the pressure of stratum production fluid is reduced, then rises to ground through standing valve assembly 2.
After under operation, pump has been constructed, implement oil pipe pressure test, when pressure increase is to certain value, cut off the shear pin between piston 5D and piston ring 5F, fall on the plug 4 bottom screen casing 3 together by piston 5D drive push rod 5B, current limiting tube 5C, standing valve assembly 2 is closed simultaneously, makes oil well pump be in normal working.
Claims (2)
1. a level pressure self balancing spray-proof device of oil-well pump, by upper connection (1), standing valve assembly (2), screen casing (3) and plug (4) composition, it is characterized in that: level pressure Equilibrator (5) is installed between standing valve assembly (2) and screen casing (3), level pressure Equilibrator (5) comprises urceolus (5A), push rod (5B), current limiting tube (5C) and piston (5D), urceolus (5A) is threaded between standing valve assembly (2) and screen casing (3), push rod (5B), current limiting tube (5C) is threaded successively with piston (5D), push rod (5B) upper end is placed in the central through bore of standing valve assembly (2) ball seat (2A), current limiting tube (5C) has radial metering hole (5E), piston (5D) is tubular structure, be fixed by a pin in piston ring (5F), piston ring (5F) is threaded in the cavity of the bottom of urceolus (5A).
2. level pressure self balancing spray-proof device of oil-well pump according to claim 1, it is characterized in that: in described current limiting tube (5C), pressure fixing valve is installed, pressure fixing valve is made up of valve ball (6), level pressure spring (7), valve ball (6) falls to being sitting on the central through bore of piston (5D), and level pressure spring (7) is placed in the current limiting tube (5C) between valve ball (6) and push rod (5B).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520831652.XU CN205172905U (en) | 2015-10-26 | 2015-10-26 | Level pressure self -balancing oil -well pump blowout preventer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520831652.XU CN205172905U (en) | 2015-10-26 | 2015-10-26 | Level pressure self -balancing oil -well pump blowout preventer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205172905U true CN205172905U (en) | 2016-04-20 |
Family
ID=55736907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520831652.XU Expired - Fee Related CN205172905U (en) | 2015-10-26 | 2015-10-26 | Level pressure self -balancing oil -well pump blowout preventer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205172905U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110566430A (en) * | 2019-08-30 | 2019-12-13 | 赵蔚 | Miniature electromagnetic oscillation non-return pump |
-
2015
- 2015-10-26 CN CN201520831652.XU patent/CN205172905U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110566430A (en) * | 2019-08-30 | 2019-12-13 | 赵蔚 | Miniature electromagnetic oscillation non-return pump |
| CN110566430B (en) * | 2019-08-30 | 2024-04-30 | 南京天恒自动化控制技术有限公司 | Miniature electromagnetic oscillation check pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160420 Termination date: 20171026 |