CN201786295U - Pressure regulating well washing machine - Google Patents
Pressure regulating well washing machine Download PDFInfo
- Publication number
- CN201786295U CN201786295U CN201020275498XU CN201020275498U CN201786295U CN 201786295 U CN201786295 U CN 201786295U CN 201020275498X U CN201020275498X U CN 201020275498XU CN 201020275498 U CN201020275498 U CN 201020275498U CN 201786295 U CN201786295 U CN 201786295U
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- CN
- China
- Prior art keywords
- well washing
- valve
- well
- oil
- flushing
- 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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- Earth Drilling (AREA)
Abstract
A pressure regulating well washing machine comprises a well washing valve, an upper joint, a valve seat and a central pipe. The upper joint and the valve seat are respectively connected with the upper end and the lower end of the well washing valve, the central pipe is connected with the lower portion of the valve seat, and a well washing opening is arranged on the well washing valve. The pressure regulating well washing machine is technically characterized in that a slide bushing, a spring and a valve body are sequentially arranged inside the well washing valve from top to bottom, the valve body is tightly abutted to the spring and the slide bushing, and well washing pressure is stabilized by the aid of the well washing valve, the slide bushing and the spring. A centralizing piece is arranged outside the central pipe, a rubber drum and a protective ring which are used for sealing a casing pipe are sequentially arranged on the outer portion of the central pipe and on the lower side of the centralizing piece, the centralizing piece can effectively prevent eccentric wearing of the rubber drum, and the rubber drum and the protective ring can prevent well washing liquor from leaking into an oil layer. A lower joint is connected to the lower end of the central pipe. During operation, the well washing liquor is filled into the casing pipe, a well washing opening is opened under quantitative pressure when the well washing liquor flows to the well washing valve, and the well washing liquor enters the bottom of an oil well pump to wash all components of the oil well pump and return the ground from an oil pipe after washing. The pressure regulating well washing machine has the advantages of stable well washing pressure and capability of guaranteeing well washing liquor against leaking into the oil layer.
Description
Technical field:
The utility model relates to oil recovery technique field, oil field, and particularly a kind of stripper well, low pressure well of being applicable to can reduce the pressure regulation well-washing device of oil reservoir back pressure.
Background technology
Oil pumper is in oil recovery, and the oil well pump of down-hole can produce the phenomenon of wax deposition in working for a long time, cause pump malfunctioning, can't operate as normal.At this moment just must well-flushing, flushing fluid is driven into the bottom of oil well pump from sleeve pipe, behind the bottom valve of pump and each the parts wash clean, return ground from oil pipe, recover the operate as normal of pump.But in the process of well-flushing, the water of well-flushing can enter oil reservoir, and polluted reservoir reduces oil production.
Summary of the invention:
In view of the deficiency that above-mentioned prior art exists, the purpose of this utility model provide a kind of can the level pressure well-flushing, prevent polluted reservoir, reduce the pressure regulation well-washing device of sleeve pipe fluid column the oil reservoir ballast, thereby improve oil production.
The utility model is to realize like this, it comprises flushing valve and the top connection that links to each other with this flushing valve upper and lower end respectively and valve seat and the central tube that links to each other with the valve seat bottom, have the well-flushing mouth on the flushing valve, it is characterized in that: in flushing valve, be provided with sliding sleeve, spring and valve body from top to bottom successively, utilize valve body to hold out against spring and sliding sleeve, make the well-flushing pressure stability by flushing valve, sliding sleeve, spring; Be provided with centralizer body in the central tube outside, the central tube outside has been provided with the packing element and the retaining ring of Sealed casing pipe effect successively below this centralizer body, utilizes centralizer body can protect packing element not to be subjected to eccentric wear effectively, utilizes packing element and retaining ring can prevent the flushing fluid oil reservoir that bleeds; Bottom at central tube is connected with lower contact.During work, flushing fluid is inserted in the sleeve pipe, when flowing to flushing valve, opens the well-flushing mouth under quantitative pressure, and flushing fluid enters the bottom of oil well pump, and each parts of oil well pump are washed, and flushing back flushing fluid returns ground from oil pipe.
In order to increase sealing effectiveness, the really anti-flushing fluid oil reservoir that bleeds, the central tube outside is provided with two cover packing element and retaining rings at least below centralizer body.
The utility model has the advantages that the well-flushing pressure stability, can guarantee the flushing fluid oil reservoir that do not bleed when well-flushing, the protection oil reservoir is not polluted by flushing fluid, has reduced the sleeve pipe fluid column to the oil reservoir ballast simultaneously yet, thereby can increase the oil production of oil well.
Below in conjunction with accompanying drawing the utility model is done with explanation.
Description of drawings:
Accompanying drawing is the utility model structural representation.
The specific embodiment:
By accompanying drawing as can be known, the utility model is made of top connection 1, flushing valve 2, sliding sleeve 3, spring 4, valve body 5, valve seat 6, centralizer body 7, packing element 8,10 and retaining ring 9,11, central tube 12 and lower contact 13.Top connection 1 and valve seat 6 are connected the upper and lower side of flushing valve 2 respectively.Sliding sleeve 3, spring 4 and valve body 5 are located in the flushing valve 2 from top to bottom successively, utilize valve body 5 to hold out against spring 4 and sliding sleeve 3, make the well-flushing pressure stability by flushing valve 2, sliding sleeve 3, spring 4; The upper end of central tube 12 links to each other with valve seat 6, and the bottom of central tube 12 links to each other with lower contact 13; Be provided with centralizer body (composite member body) 7, packing element 8,10 and retaining ring 9,11 in the outside of central tube 12, packing element 8 links to each other with retaining ring 9, and packing element 10 links to each other with retaining ring 11.Utilize centralizer body 7 protection packing elements 8,10 not to be subjected to eccentric wear; the sealing devices that utilize two cover packing elements 8,10 and retaining rings 9,11 to form can prevent the flushing fluid oil reservoir that bleeds; born the weight of sleeve pipe 15 water simultaneously; this has just reduced water in the sleeve pipe 15 to the pressure reduction of oil reservoir; increase oil recovery pressure reduction, just can increase the oil production of oil well.During use, this pressure regulation well-washing device is connected to the bottom of oil well pump, is lowered in the oil well to oil reservoir top.In well-flushing when work,, flushing fluid enters in the sleeve pipe 15, when flowing to flushing valve 2, under quantitative pressure, opens well-flushing mouth 14, makes flushing fluid enter the bottom of oil well pump, after each parts of oil well pump are rinsed well, returns ground from oil pipe 16, finishes the overall process of well-flushing.
Claims (2)
1. pressure regulation well-washing device, it comprises flushing valve and the top connection that links to each other with this flushing valve upper and lower end respectively and valve seat and the central tube that links to each other with the valve seat bottom, have the well-flushing mouth on the flushing valve, it is characterized in that: in flushing valve, be provided with sliding sleeve, spring and valve body from top to bottom successively; Be provided with centralizer body in the central tube outside, the central tube outside has been provided with the packing element and the retaining ring of Sealed casing pipe effect successively below this centralizer body; Bottom at central tube is connected with lower contact.
2. pressure regulation well-washing device as claimed in claim 1 is characterized in that: the central tube outside is provided with two cover packing element and retaining rings at least below centralizer body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020275498XU CN201786295U (en) | 2010-07-30 | 2010-07-30 | Pressure regulating well washing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020275498XU CN201786295U (en) | 2010-07-30 | 2010-07-30 | Pressure regulating well washing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201786295U true CN201786295U (en) | 2011-04-06 |
Family
ID=43818262
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020275498XU Expired - Fee Related CN201786295U (en) | 2010-07-30 | 2010-07-30 | Pressure regulating well washing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201786295U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104018809A (en) * | 2014-04-22 | 2014-09-03 | 中国石油大学(华东) | Flushing tool for underwater wellhead device |
| CN104265216A (en) * | 2014-08-15 | 2015-01-07 | 中国石油天然气股份有限公司 | Throwing-fishing-free pressure switch capable of washing well |
| CN104653144A (en) * | 2013-11-19 | 2015-05-27 | 中国石油天然气股份有限公司 | Compression packer for oil well large pressure difference washable well |
-
2010
- 2010-07-30 CN CN201020275498XU patent/CN201786295U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104653144A (en) * | 2013-11-19 | 2015-05-27 | 中国石油天然气股份有限公司 | Compression packer for oil well large pressure difference washable well |
| CN104018809A (en) * | 2014-04-22 | 2014-09-03 | 中国石油大学(华东) | Flushing tool for underwater wellhead device |
| CN104018809B (en) * | 2014-04-22 | 2019-03-22 | 中国石油大学(华东) | A kind of subsea equipment flushing tool |
| CN104265216A (en) * | 2014-08-15 | 2015-01-07 | 中国石油天然气股份有限公司 | Throwing-fishing-free pressure switch capable of washing well |
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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: 20110406 Termination date: 20110730 |