CN201232625Y - Sidestream unloading deep-pumping pump - Google Patents
Sidestream unloading deep-pumping pump Download PDFInfo
- Publication number
- CN201232625Y CN201232625Y CNU2008201900394U CN200820190039U CN201232625Y CN 201232625 Y CN201232625 Y CN 201232625Y CN U2008201900394 U CNU2008201900394 U CN U2008201900394U CN 200820190039 U CN200820190039 U CN 200820190039U CN 201232625 Y CN201232625 Y CN 201232625Y
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- CN
- China
- Prior art keywords
- pump
- effluent
- pump barrel
- oil
- load
- 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 side-stream load-reducing deep pump of deep oil-well production of an oil field. By adopting a serial structure of a small pump at the upper part and a big pump at the lower part, the displacement of the big pump can be guaranteed and simultaneously the load of a suspension point is reduced to load of the small pump when in upstroke, thus realizing load-reducing function and leading the deep pump capability of a small oil pumping machine to be extended. Simultaneously, by the measures of adopting a side-stream valve, a large-diameter oil pumping rod, a solid long plunger and a carrier pipe and the like, the utility mode has strong bearing capacity and sand prevention effect, can effectively work under the pump-setting depth of 4000 to 5000m and meets the requirements of deep production of the oil field.
Description
Technical field
The utility model relates to a kind of deep-well tubular type effluent off-load deep oil well pump that the oilfield machinery crude oil extraction is used that is used for, and is a kind of bar oil production equipment that has.Be adapted to conventional general oil well of exploitation and well depth greater than the deep layer oil well oil-pumping more than 3500 meters.
Background technique
Domestic oil field is through exploitation for many years, and most wells has entered development phase middle and later periods, and along with the variation year by year of well deliverability, producing fluid level constantly descends, and pump setting depth is also constantly deepened.And, along with the exhaustion of the shallow oil reservoirs resource in oil field, original placement do not adopt in dark oil reservoirs become the Oilfield developing emphasis now.In the exploitation of deep layer oil well, mainly there are following two problems:
1. there is not suitable dark production oil-well pump; Current, the oil field deep well exploitation small pump diameter tubing pumps of diameter below 38 millimeters that use are exploited more, owing to directly limited by pump, this pump strength weak designs the maximum pump degree of depth down less than 3000 meters, the result that overburdening is used, cause pump detection period to descend significantly, operating cost increases.And the actual maximum pump degree of depth down of this pump can not surpass 3500 meters, and the oil well that surpasses this degree of depth can't be exploited.
2. what oil field use at present was the most general still is little load pumping unit, limited by specified polished rod load, can't realize the exploitation of dark pumping well.
Summary of the invention
The effluent off-load deep oil well pump that the purpose of this utility model provides a kind of high strength and high pump efficiency and can reduce the pumping unit polished rod load.
The purpose of this utility model is achieved in that a kind of effluent off-load deep oil well pump, comprise the pump housing, pump housing top is provided with oil pipe, and the bottom is provided with oiling valve, upper plug and lower plunger polyphone, last pump barrel is chained together by duplex fitting with following pump barrel, be sleeved on outside the plunger, the outer suit cross under of last pump barrel and following pump barrel, the cross under bottom connects gap bridge box cupling and oiling valve successively, following pump barrel bottom connects the effluent valve bonnet, and the effluent valve is equipped with in effluent valve bonnet bottom.
Design has two mutual disconnected oil flow channels on the effluent valve bonnet, and passage is connected with annular pass between following pump barrel and cross under, and a passage is connected with the pump chamber of plunger bottom, and two passages are cut off by the effluent valve.
Design has two mutual disconnected oil flow channels in the duplex fitting, and passage connects being connected of annular pass between oil pipe inner chamber and following pump barrel and cross under; Another passage is with annular space perforation between annular space and oil pipe and pump housing sleeve pipe between upper plug and following pump barrel.
Upper plug is solid long-plunger structure, and lower plunger is the solid stub plug structure.
Last pump barrel is the short pump barrel structure, and following pump barrel is long pump barrel structure.
Effluent off-load deep oil well pump provided by the utility model has adopted the series arrangement of the little pump in top, the big pump in bottom, replaces conventional traveling valve with the effluent valve, compares the utility model with conventional tubing pump and has possessed following advantage:
(1) realized Load Alleviation Function.By upper and lower pump series arrangement, last pump adopts little pump, and following pump adopts big pump, and when make guaranteeing big pump displacement, during upstroke, the pumping unit polished rod load is reduced to little pump load, has alleviated the pumping unit load, has reduced energy consumption.Also make simultaneously the ability of taking out deeply of small-sized pumping unit obtain extending.
(2) possessed the sand control function.Last pump adopts long-plunger short pump barrel structure, when no matter oil well pump work still is stop pumping, upper plug top does not enter pump barrel for one section all the time, makes in the oil pipe sand grains can't enter pump barrel or piles up at the pump barrel oral area, can prevent effectively that the sand grains in the crude oil from blocking or burying plunger.
Upper plug top need not enter pump barrel during (3) owing to work, therefore the sucker rod that is connected on the pump does not need to enter pump barrel yet, and this just makes sucker rod directly limited by pump, thereby can adopt the large-diameter extraction beam hanger, the intensity of rod string gets a promotion, and has adapted to the exploitation of deep-well.
(4) owing to adopt the effluent valve arrangement to replace conventional traveling valve, during the plunger down stroke, crude oil enters on the pump in the oil pipe by the effluent valve under the pump, rather than as conventional pumps, need enter oil pipe on the pump by traveling valve passage in the plunger, therefore upper and lower plunger all can be selected real cored structure for use, make the bearing capacity of plunger greatly improve, adapted to the exploitation of deep-well.
(5) design has cross under, makes head of liquid and tail pipe weight act on the cross under, has reduced the load that pump barrel bears, and has avoided the distortion of pump barrel, makes that the bearing capacity of pump barrel is strengthened, and has adapted to the exploitation of deep-well.
(6) oil drain passage is more unimpeded, has reduced oily resistance.Owing to no longer be subjected to size restrictions, the utility model has increased the oil drain passage area, and also the traveling valve than conventional pumps is big for the selected ball valve specification of effluent valve, and the oil flow resistance when making oil extraction greatly reduces, improve the pump efficiency of oil well pump, also reduced the influence that oily resistance causes whole oil pumping system.
In sum, the utlity model has very strong bearing capacity and tangible off-load effect, can under the pump setting depth of 4000-5000 rice, effectively work, satisfy the needs of oil field deep production.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
Fig. 1 is a structural representation of the present utility model.
Embodiment
The utility model adopts following structure: see Fig. 1, comprise the pump housing, pump housing top is provided with oil pipe 1, and the bottom is provided with oiling valve 13, upper plug 6 and lower plunger 9 polyphones, last pump barrel 4 is chained together by duplex fitting 5 with following pump barrel 8, be sleeved on outside the plunger, last pump barrel 4 and following pump barrel 8 outer suit cross unders 7, cross under 7 bottoms connect gap bridge box cupling 10 and oiling valve 13 successively, following pump barrel 8 bottoms connect effluent valve bonnet 11, and effluent valve 12 is equipped with in effluent valve bonnet 11 bottoms.
Design has two mutual disconnected oil flow channels on the effluent valve bonnet 11, and the annular pass that passage and following pump barrel 8 and cross under are 7 is connected, and a passage is connected with the pump chamber of plunger bottom, and two passages are cut off by effluent valve 12.
Design has two mutual disconnected oil flow channels in the duplex fitting 5, and passage connects being connected of oil pipe inner chamber and following pump barrel 8 and 7 annular passs of cross under; Another passage connects annular space between upper plug 6 and 8 annular spaces of following pump barrel and oil pipe and pump housing sleeve pipe.
Upper plug 6 is solid long-plunger structure, and lower plunger 9 is the solid stub plug structure.
Last pump barrel 4 is the short pump barrel structure, and following pump barrel 8 is long pump barrel structure.
Working principle of the present utility model is as follows:
During upstroke, upper plug and lower plunger are up under the drive of sucker rod, plunger below pump chamber volume increases, pressure descends, close under the pressure of effluent valve fluid column in oil pipe, oiling valve is opened under the pump intake pressure effect, and the liquid between oil pipe and the sleeve pipe in the annular chamber enters in the pump chamber of plunger below.Simultaneously, the fluid of annular space enters in the sleeve pipe between upper plug and following pump barrel.At this moment, the fluid column load that acts on the upper plug for rod string load adds of pumping unit polished rod load.
During down stroke, upper plug and lower plunger are descending under the drive of sucker rod, plunger below pump chamber volume reduces, pressure increases, oiling valve cuts out under the effect of self gravitation and chamber pressure, the effluent valve is opened under the effect of chamber pressure, and liquid drains into annular pass between pump barrel and cross under by the effluent valve in the pump chamber of plunger below, and enters in the oil pipe of plunger top.Simultaneously, the sleeve pipe inner fluid enters between upper plug and following pump barrel in the annular space.At this moment, the oil pumping pump delivery is the discharge capacity in lower plunger pump footpath.
Claims (5)
1, a kind of effluent off-load deep oil well pump, comprise the pump housing, pump housing top is provided with oil pipe (1), the bottom is provided with oiling valve (13), it is characterized in that: upper plug (6) and lower plunger (9) polyphone, last pump barrel (4) is chained together by duplex fitting (5) with following pump barrel (8), be sleeved on outside the plunger, last pump barrel (4) and the outer suit cross under of following pump barrel (8) (7), cross under (7) bottom connects gap bridge box cupling (10) and oiling valve (13) successively, following pump barrel (8) bottom connects effluent valve bonnet (11), and effluent valve (12) is equipped with in effluent valve bonnet (11) bottom.
2, effluent off-load deep oil well pump according to claim 1, it is characterized in that: effluent valve bonnet (11) is gone up design two mutual disconnected oil flow channels, passage is connected with annular pass between following pump barrel (8) and cross under (7), a passage is connected with the pump chamber of plunger bottom, and two passages are cut off by effluent valve (12).
3, effluent off-load deep oil well pump according to claim 1 is characterized in that: design is gone up in duplex fitting (5) two mutual disconnected oil flow channels, and passage connects being connected of annular pass between oil pipe inner chamber and following pump barrel (8) and cross under (7); Another passage is with annular space perforation between annular space and oil pipe and pump housing sleeve pipe between upper plug (6) and following pump barrel (8).
4, effluent off-load deep oil well pump according to claim 1 is characterized in that: upper plug (6) is solid long-plunger structure, and lower plunger (9) is the solid stub plug structure.
5, effluent off-load deep oil well pump according to claim 1 is characterized in that: going up pump barrel (4) is the short pump barrel structure, and following pump barrel (8) is long pump barrel structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201900394U CN201232625Y (en) | 2008-07-30 | 2008-07-30 | Sidestream unloading deep-pumping pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201900394U CN201232625Y (en) | 2008-07-30 | 2008-07-30 | Sidestream unloading deep-pumping pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201232625Y true CN201232625Y (en) | 2009-05-06 |
Family
ID=40619003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201900394U Expired - Fee Related CN201232625Y (en) | 2008-07-30 | 2008-07-30 | Sidestream unloading deep-pumping pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201232625Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112832993A (en) * | 2021-01-08 | 2021-05-25 | 西南石油大学 | Position exchange type deloading oil well pump |
-
2008
- 2008-07-30 CN CNU2008201900394U patent/CN201232625Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112832993A (en) * | 2021-01-08 | 2021-05-25 | 西南石油大学 | Position exchange type deloading oil well pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CSIC ZHONGNAN EQUIPMENT CO., LTD. Free format text: FORMER OWNER: STATE-RUN NO.388 FACTORY Effective date: 20090911 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| C53 | Correction of patent for invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Gan Zhenwei Inventor after: Lin Tao Inventor after: Hu Zhen Inventor after: Liu Jiankui Inventor after: Zhao Haiyang Inventor after: Xu Jiaqin Inventor after: Deng Hongjun Inventor after: Hu Yajie Inventor after: Li Jianhua Inventor before: Gan Zhenwei Inventor before: Lin Tao Inventor before: Hu Zhen Inventor before: Liu Jiankui Inventor before: Zhao Haiyang Inventor before: Xu Jiaqin Inventor before: Deng Hongjun Inventor before: Hu Yajie Inventor before: Li Jianhua |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20090911 Address after: No. 1, Qingdao Road, Dongshan Development Zone, Hubei City, Yichang Province, China: 443000 Co-patentee after: Petroleum Engineering Technology Research Institute of SINOPEC Northwest Oilfield Co., Ltd. Patentee after: Zhongnan heavy industry Zhongnan equipment limited liability company Address before: No. 1, Qingdao Road, Dongshan Development Zone, Hubei City, Yichang Province, China: 443000 Patentee before: State-owned No.388 Factory |
|
| 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: 20090506 Termination date: 20170730 |