CN201554632U - Eccentric gap bridge separate-pumping mixed-recovery oil well pump - Google Patents

Eccentric gap bridge separate-pumping mixed-recovery oil well pump Download PDF

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Publication number
CN201554632U
CN201554632U CN200920228773XU CN200920228773U CN201554632U CN 201554632 U CN201554632 U CN 201554632U CN 200920228773X U CN200920228773X U CN 200920228773XU CN 200920228773 U CN200920228773 U CN 200920228773U CN 201554632 U CN201554632 U CN 201554632U
Authority
CN
China
Prior art keywords
pump
oil
valve
plunger
eccentric
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
Application number
CN200920228773XU
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Chinese (zh)
Inventor
李进玉
刘建魁
许家勤
胡桢
陈向灵
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CSIC Zhongnan Equipment Co Ltd
Original Assignee
CSIC Zhongnan Equipment Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by CSIC Zhongnan Equipment Co Ltd filed Critical CSIC Zhongnan Equipment Co Ltd
Priority to CN200920228773XU priority Critical patent/CN201554632U/en
Application granted granted Critical
Publication of CN201554632U publication Critical patent/CN201554632U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

An eccentric gap bridge separate-pumping mixed-oil well pump is used for pumping multi-layer crude oil in an oil field. The pump formed by an upper pump and a lower pump in series connection mainly comprises an upper pump cylinder, an upper plunger, an upper-portion gap bridge pipe, an oil outlet valve, a shunt valve, an eccentric oil inlet valve, a center pipe, a lower pump cylinder, a lower plunger, a lower-portion gap bridge pipe, a lower pump oil outlet valve, a lower pump oil inlet valve, a pump cylinder connecting hoop and the like, wherein the upper plunger and the lower plunger are connected through the center pipe, and the upper pump cylinder and the lower pump cylinder are connected through a pump cylinder joint. The pump can normally work in multi-layer crude oil well extraction, effectively avoid no outlet oil of a low-pressure oil layer caused by pressure difference, improve pump efficiency, reduce operation cost, decrease operation time and increase crude oil recovery ratio of an oil well.

Description

The eccentric branch of passing a bridge is taken out and is mixed out oil well pump
Technical field
The utility model relates to and a kind ofly is used for the deep-well that the oilfield machinery crude oil extraction uses and takes out pump, especially is adapted at using in the separate zone production.
Background technique
The oil well that China oil field has has the multilayer oil reservoir, because the pressure difference of each oil reservoir causes the high oil reservoir of pressure to be separated out soon, it is fuel-displaced just to suppress the low oil reservoir of pressure, when adopting common oil well pump to recover the oil, the crude oil of just can only the high oil reservoir of extraction pressure separating out, the crude oil of low pressure reservoir just can not extraction.Simultaneously, because taking out, branch needs lower packet, pump barrel easy deformation when mixing out the oil well pump operation.Common branch takes out that annular valve that the last oil pump inlet valve that mixes out oil well pump is made up of several oiling valves constitutes, and the inefficacy probability height of oiling valve causes whole pump to lose efficacy.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned drawback, provide a kind of off-centre that is applicable to that the oil well delamination exploitation is used to pass a bridge to divide to take out and mix out oil well pump, can effectively prevent of the influence of oil well mesohigh oil reservoir, reduce the oiling valve failure rate, prolong the working life of oil well pump low pressure reservoir.
The purpose of this utility model be achieved in that a kind of eccentric pass a bridge to divide to take out mix out oil well pump, comprise the pump housing, the upper and lower of the pump housing is respectively equipped with pump barrel and following pump barrel, be provided with eccentric valve body and eccentric oiling valve between last pump barrel and the following pump barrel, last pump barrel is provided with the top cross under outward, and cross under one end in top is connected with top gap bridge box cupling, and last pump barrel is connected with top pump barrel box cupling, be provided with upper plug in the last pump barrel, the upper plug two ends are respectively equipped with outlet valve and diverter valve;
The doffing pump barrel is provided with the bottom cross under outward, and cross under one end in bottom is connected with bottom gap bridge box cupling, and following pump barrel is connected with bottom gap bridge box cupling, is provided with lower plunger in the following pump barrel, is provided with down oil pump inlet valve and following oil pump outlet valve in the lower plunger;
Following vertebra plunger is communicated with upper plug by center tube and diverter valve.
Be provided with extension nipple between top pump barrel box cupling and the eccentric valve body.
The eccentric branch of passing a bridge provided by the utility model is taken out and is mixed out oil well pump, has adopted the structure of the different pump polyphone of diameter, compares the utility model with conventional tubing pump and has possessed following advantage:
1. realized the function of oil well delamination exploitation, by adopting organic polyphone of upper and lower two pumps, under the effect of packet, last pump pumping upper strata crude oil, bottom pumping lower floor crude oil.
Since upper and lower pump barrel exterior design cross under, the pump barrel that causes in the time of effectively preventing packer set distortion makes the phenomenon of plunger cisco unity malfunction, has reduced the operation number of times that causes because of the pump barrel distortion, has saved operating cost.
3. go up eccentric valve body and eccentric oiling valve that the pump design has a big runner, reduced because the pump detection and workover that oiling valve lost efficacy and causes.
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.
Fig. 2 is the fundamental diagram of the utility model up stroke.
Fig. 3 is the fundamental diagram of the utility model down stroke.
Embodiment
The utility model adopts following structure: see Fig. 1, a kind of eccentric branch of passing a bridge is taken out and is mixed out oil well pump, comprise the pump housing, the upper and lower of the pump housing is respectively equipped with pump barrel 2 and following pump barrel 8, be provided with eccentric valve body 6 and eccentric oiling valve 16 between last pump barrel 2 and the following pump barrel 8, the last pump barrel 2 outer top cross unders 3 that are provided with, cross under 3 one ends in top are connected with top gap bridge box cupling 1, last pump barrel 2 is connected with top pump barrel box cupling 4, be provided with upper plug 13 in the last pump barrel 2, upper plug 13 two ends are respectively equipped with outlet valve 12 and diverter valve 14;
Be provided with bottom cross under 9 outside the doffing pump barrel 8, cross under 9 one ends in bottom are connected with bottom gap bridge box cupling 7, and following pump barrel 8 is connected with bottom gap bridge box cupling 11, is provided with lower plunger 18 in the following pump barrel 8, are provided with down oil pump inlet valve 10 and following oil pump outlet valve 17,19 in the lower plunger 18;
Following vertebra plunger 18 is communicated with upper plug 13 by center tube 15 and diverter valve 14.
Be provided with extension nipple 5 between top pump barrel box cupling 4 and the eccentric valve body 6.
Working principle of the present utility model is as shown in Figures 2 and 3:
The upper and lower pump barrel assembly of oil well pump is lowered into design attitude by oil pipe, the oil well pump bottom need connect packet 20, the packer location should make pump be positioned at oil reservoir pumping top crude oil in oil well between the upper and lower oil reservoir, and following pump enters into down oil reservoir pumping bottom crude oil by oil pipe.
The plunger piston assembly of being made up of outlet valve 12, upper plug 13, diverter valve 14, center tube 15, following oil pump outlet valve 17,19, lower plunger 18 is lowered in the pump barrel by sucker rod, can pump behind the adjustment over-stroke.
During up stroke, plunger piston assembly is up under the drive of sucker rod, closes under the effect of outlet valve 12, diverter valve 14, following oil pump outlet valve 17,19 head of liquid in self gravitation and oil pipe; Pump pump chamber ring-like space in top increases, the pump chamber space of bottom pump increases simultaneously, and pressure reduces, and eccentric oiling valve 16, following oil pump inlet valve 10 are opened under the pressure of submergence simultaneously, upper strata crude oil enters the ring-like space of pump pump chamber, top, and lower floor's crude oil enters into the pump chamber of bottom pump; Crude oil in the oil pipe is thus lifted to ground.
During down stroke, plunger piston assembly is descending under the drive of sucker rod, and the pump chamber space of ring-like space of pump pump chamber, top and bottom pump reduces, and pressure increases, and eccentric oiling valve 16, following oil pump inlet valve 10 are closed under the effect of self gravitation and chamber pressure; Simultaneously, outlet valve 12, diverter valve 14, following oil pump outlet valve 17,19 are opened under the pressure of chamber, and upper and lower pump chamber crude oil enters into oil pipe.
Circulation so repeatedly, shaft bottom fluid is just given rise to ground.

Claims (2)

1. the eccentric branch of passing a bridge is taken out and is mixed out oil well pump, comprise the pump housing, the upper and lower of the pump housing is respectively equipped with pump barrel (2) and following pump barrel (8), be provided with eccentric valve body (6) and eccentric oiling valve (16) between last pump barrel (2) and the following pump barrel (8), the outer top cross under (3) that is provided with of last pump barrel (2), cross under (3) one ends in top are connected with top gap bridge box cupling (1), last pump barrel (2) is connected with top pump barrel box cupling (4), be provided with upper plug (13) in the last pump barrel (2), upper plug (13) two ends are respectively equipped with outlet valve (12) and diverter valve (14);
The outer bottom cross under (9) that is provided with of doffing pump barrel (8), cross under (9) one ends in bottom are connected with bottom gap bridge box cupling (7), following pump barrel (8) is connected with bottom gap bridge box cupling (11), be provided with lower plunger (18) in the following pump barrel (8), be provided with down oil pump inlet valve (10) and following oil pump outlet valve (17,19) in the lower plunger (18);
Following vertebra plunger (18) is communicated with upper plug (13) by center tube (15) and diverter valve (14).
2. the eccentric branch of passing a bridge according to claim 1 is taken out and is mixed out oil well pump, it is characterized in that: be provided with extension nipple (5) between top pump barrel box cupling (4) and the eccentric valve body (6).
CN200920228773XU 2009-10-10 2009-10-10 Eccentric gap bridge separate-pumping mixed-recovery oil well pump Expired - Fee Related CN201554632U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN200920228773XU CN201554632U (en) 2009-10-10 2009-10-10 Eccentric gap bridge separate-pumping mixed-recovery oil well pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN200920228773XU CN201554632U (en) 2009-10-10 2009-10-10 Eccentric gap bridge separate-pumping mixed-recovery oil well pump

Publications (1)

Publication Number Publication Date
CN201554632U true CN201554632U (en) 2010-08-18

Family

ID=42614313

Family Applications (1)

Application Number Title Priority Date Filing Date
CN200920228773XU Expired - Fee Related CN201554632U (en) 2009-10-10 2009-10-10 Eccentric gap bridge separate-pumping mixed-recovery oil well pump

Country Status (1)

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CN (1) CN201554632U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106593836A (en) * 2016-12-27 2017-04-26 中国石油天然气股份有限公司 Multi-level plunger variable displacement oil well pump
CN109184650A (en) * 2018-09-07 2019-01-11 中国石油化工股份有限公司 Dilute system is mixed under oil recovery by heating pump

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106593836A (en) * 2016-12-27 2017-04-26 中国石油天然气股份有限公司 Multi-level plunger variable displacement oil well pump
CN106593836B (en) * 2016-12-27 2018-06-01 中国石油天然气股份有限公司 A kind of Multi-stage plunger displacement variable oil-well pump
CN109184650A (en) * 2018-09-07 2019-01-11 中国石油化工股份有限公司 Dilute system is mixed under oil recovery by heating pump

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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: 20100818

Termination date: 20181010