CN201297144Y - Device for flushing pumping well - Google Patents
Device for flushing pumping well Download PDFInfo
- Publication number
- CN201297144Y CN201297144Y CNU2008201733974U CN200820173397U CN201297144Y CN 201297144 Y CN201297144 Y CN 201297144Y CN U2008201733974 U CNU2008201733974 U CN U2008201733974U CN 200820173397 U CN200820173397 U CN 200820173397U CN 201297144 Y CN201297144 Y CN 201297144Y
- Authority
- CN
- China
- Prior art keywords
- pumping well
- central tube
- flushing
- under
- leather cup
- 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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- Treatment And Processing Of Natural Fur Or Leather (AREA)
Abstract
The utility model relates to a device for flushing a pumping well, comprising a leather cup, a rubber cylinder, a central tube and a check valve. The leather cup and the rubber cylinder are sleeved on the central tube; the lower part of the central tube is connected with the check valve; the central tube is provided with a communicating groove; and an expansion device is connected to the upper part of the central tube. Pumping well flushing water infiltrates from a sleeve, and under the separation action of the leather cup and the rubber cylinder, the pumping well flushing water can only enter from sieve openings of the expansion device and flows upwards under the action of the check valve to the ground through an oil pump and an oil pipe, thereby forming a reverse circulation channel for flushing the pumping well; and in addition, the pumping well flushing water can not enter an oil layer but can protect the oil layer against pollution. The rubber cylinder expands and seals a sleeve pipe and is supported on the sleeve pipe under the action of pumping well flushing difference, and the leather cup has self-sealing function, therefore, under the joint action of two sealing elements and under the support of the rubber cylinder, the sealing elements have long service life, and the pumping well can be flushed reliably for a long time so as to have long production period and good economic benefit.
Description
One, technical field
The utility model is the underground equipment that oil field pumping well is used, and is a kind of pumpingh well well washing apparatus.
Two, background technology
The heavy oil wells that has, paraffin-troubled well, sand output well need frequent well-flushing just can keep ordinary production, extend manufacture cycle, and pumping and washing process is that well-flushing water is squeezed into oil pipe from sleeve pipe and returned out, forms the circulation well cleanup passage, and oil well is cleaned up.But the oil well that has is because oil reservoir is missed, and well-flushing water enters oil reservoir after sleeve pipe is squeezed into, do not go out from the oil pipe internal return, do not reach the purpose of well-flushing, well-flushing water enters oil reservoir also can make oil layer pollution, reduces oil well output, even kill oil reservoir, and make oil well not fuel-displaced, produce heavy economic losses.In order to address this problem, protect oil reservoir, flushing packer has been developed in the oil field, and oil reservoir is separated well-flushing, but existing flushing packer adopts independent leather cup to do seal, and pressure-bearing is low, does not adapt to the tubing string wriggling, damages easily, and application life is short.
Three, summary of the invention
The purpose of this utility model is a kind of pumpingh well well washing apparatus of design, can form the well-flushing passage, and well-flushing water can not enter oil reservoir, and the protection oil reservoir makes it not contaminated, and seal adopts composite seal, and is anticreep, long service life.
The purpose of this utility model is achieved in that by leather cup, packing element, central tube, ball-and-seat to be formed, and leather cup, packing element are sleeved on the central tube, and the central tube bottom connects with ball-and-seat.
UNICOM's groove is arranged on the central tube.
Stretching device is connected in the top on the central tube.
The beneficial effects of the utility model are: under the well-flushing differential pressure action, packing element expansion Sealed casing pipe also is supported on the sleeve pipe, leather cup has self-tightening, therefore, under the compound action of two kinds of seals, and under the packing element supporting role, seal durability is long, oil well is well-flushing reliably and with long-term, and the oil well production cycle is long, and is good in economic efficiency.
Four, description of drawings
Accompanying drawing is the assembling drawing of the utility model embodiment.
Five, the specific embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described.
Be made up of leather cup 1, packing element 2, central tube 3, ball-and-seat 4, stretching device 5, leather cup 1, packing element 2 are sleeved on the central tube 3, and central tube 3 bottoms connect with ball-and-seat.UNICOM's groove 6 is arranged on the central tube 3.Stretching device 5 is connected in the top on the central tube 3.
Well-flushing water is squeezed into from sleeve pipe; leather cup 1,2 compartmentations of packing element; well-flushing water can only enter from the sieve aperture of stretching device; under the effect of ball-and-seat 4; well-flushing water upwards flows, and flows out to ground through oil well pump, oil pipe, forms anti-circulation canal well-flushing; well-flushing water can not enter oil reservoir, can protect oil reservoir not contaminated.
Claims (3)
1, a kind of pumpingh well well washing apparatus is made up of leather cup (1), packing element (2), central tube (3), ball-and-seat (4), it is characterized in that: leather cup (1), packing element (2) are sleeved on the central tube (3), and central tube (3) bottom connects with ball-and-seat.
2, pumpingh well well washing apparatus according to claim 1 is characterized in that: UNICOM's groove (6) is arranged on the central tube (3).
3, pumpingh well well washing apparatus according to claim 1 is characterized in that: stretching device (5) is connected in the top on the central tube (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201733974U CN201297144Y (en) | 2008-10-21 | 2008-10-21 | Device for flushing pumping well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201733974U CN201297144Y (en) | 2008-10-21 | 2008-10-21 | Device for flushing pumping well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201297144Y true CN201297144Y (en) | 2009-08-26 |
Family
ID=41043123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201733974U Expired - Fee Related CN201297144Y (en) | 2008-10-21 | 2008-10-21 | Device for flushing pumping well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201297144Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111287693A (en) * | 2018-12-06 | 2020-06-16 | 中国石油天然气集团有限公司 | Well flushing tool with coiled tubing capable of realizing positive and negative circulation |
| US10787870B1 (en) | 2018-02-07 | 2020-09-29 | Consolidated Rig Works L.P. | Jointed pipe injector |
| CN112761569A (en) * | 2019-11-05 | 2021-05-07 | 中国石油化工股份有限公司 | Electric pump well washing device and method, special packer and special hanging basket |
-
2008
- 2008-10-21 CN CNU2008201733974U patent/CN201297144Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10787870B1 (en) | 2018-02-07 | 2020-09-29 | Consolidated Rig Works L.P. | Jointed pipe injector |
| CN111287693A (en) * | 2018-12-06 | 2020-06-16 | 中国石油天然气集团有限公司 | Well flushing tool with coiled tubing capable of realizing positive and negative circulation |
| CN111287693B (en) * | 2018-12-06 | 2022-06-03 | 中国石油天然气集团有限公司 | Well flushing tool with coiled tubing capable of realizing positive and negative circulation |
| CN112761569A (en) * | 2019-11-05 | 2021-05-07 | 中国石油化工股份有限公司 | Electric pump well washing device and method, special packer and special hanging basket |
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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: 20090826 Termination date: 20091123 |