CN2173871Y - Bidirectional symmetrical single-screw oil pump - Google Patents

Bidirectional symmetrical single-screw oil pump Download PDF

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Publication number
CN2173871Y
CN2173871Y CN 93220526 CN93220526U CN2173871Y CN 2173871 Y CN2173871 Y CN 2173871Y CN 93220526 CN93220526 CN 93220526 CN 93220526 U CN93220526 U CN 93220526U CN 2173871 Y CN2173871 Y CN 2173871Y
Authority
CN
China
Prior art keywords
oil
screw rod
lining
pump
steel sleeve
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
CN 93220526
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Chinese (zh)
Inventor
贾树成
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.)
JIDONG OIL EXPLORATION AND DEV
Original Assignee
JIDONG OIL EXPLORATION AND DEV
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 JIDONG OIL EXPLORATION AND DEV filed Critical JIDONG OIL EXPLORATION AND DEV
Priority to CN 93220526 priority Critical patent/CN2173871Y/en
Application granted granted Critical
Publication of CN2173871Y publication Critical patent/CN2173871Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

An oil pumping device under oil exploitation well. The screw rod in the two screw rod-bush body with opposite rotation directions is connected through the flexible shaft, so that oil flows into the cavity of the upper screw rod-bush body and the lower screw rod-bush body to flow in opposite directions after being pressurized, and then the oil flows into the oil pipe after being collected through a channel between the bush body and the outer sleeve. The balance structure solves the problem of balancing the axial force of the screw pump, reduces the load of the bearing, prolongs the service life of the bearing, increases the discharge capacity of the pump and reduces the vibration of the pump. It reduces the radial size and is suitable for the requirement of small casing pipe for large displacement oil production. Can be used for crude oil exploitation, especially for heavy oil, gas, sand and high-pour-point oil.

Description

Bidirectional symmetric single screw oil pump
The utility model relates to petroleum production down-hole pumping unit technical field.
Existing progressive cavity pump device, no matter be ground surface driving or the down-hole drives, all exist the problem that axial force is difficult to balance.In operation process, because the effect of screw pump axial force for the screw pump of ground surface driving, usually causes screw rotor and pumping rod disengaging; Drive for the down-hole, then strengthened the stressed of bottom carrier bearing, shortened the life-span of bearing; Thereby cause the repetition operation, influenced ordinary production.Existing progressive cavity pump device also exists a problem that discharge capacity is little, and in order to increase discharge capacity, the someone adopts the way of the rotating speed that improves pump.But high rotating speed has reduced the life-span of the lining stator of pump.Adopt one way to strengthen the way of helical pitch, certain difficulty is arranged again in the processing.Adopt the binary screw rod then to strengthen pump footpath size, the existing well cylinder size does not allow, and is being in transmission connection and the oil field all is restricted in using.
The purpose of this utility model provides a kind of new screw oil-well pump device.Realize the screw pump axial force balance, reduce bearing load, improve bearing life, reduce the vibration of pump, under the slow-speed of revolution, increase pump delivery simultaneously, prolong the working life of pump.
The purpose of this utility model is to realize like this, couple together by the screw rod of scratching in axle screw rod-lining body that two rotation directions is opposite, after making oil flow to two interior difference of screw rod-lining fluid chamber supercharging up and down, opposite up and down direction flows, then, enter oil pipe after compiling by the passage between lining body and the overcoat.
The bi-directional symmetrical single screw pump has solved screw pump balance of axial force problem, has reduced bearing load, has improved the life-span of bearing, has increased pump delivery simultaneously, has reduced the vibration of pump.Radial dimension has been dwindled in this design greatly, the requirement that needs big discharge capacity to recover the oil applicable to the small casing well.Processing technology is simple, and cost is low.This pump can adopt the mode of ground surface driving or underground driving, and is applied widely, overcome a series of shortcomings of existing progressive cavity pump, is the ideal tools that improves well recovery amount and lifting rate.Can be widely used in crude oil exploitation, especially at heavy crude producing, gassiness, contain sand and high when coagulating oil, its distinctive feature is more arranged.Also can be used for inclined shaft, directional well etc.
Fig. 1. bi-directional symmetrical single screw pump structural representation.
Fig. 2. bi-directional symmetrical single screw pump structure A-A sectional view.
Wherein: (1) transmission shaft; (2) go up special-shaped joint; (3) go up screw rod; (4) go up lining; (5) go up outer steel sleeve; (6) scratch axle; (7) feed flow is communicated with joint; (8) screw rod under; (9) lining under; (10) outer steel sleeve under; (11) pump block connecting vessels; (12) oil inlet hole; (13) port hole; (14) passage.
Further specify the utility model below in conjunction with drawings and Examples.
Embodiment one: the inside thread by feed flow connection joint 7 between last lining 4 and the following lining 9 is connected and fixed, the outside that is communicated with joint 7 at feed flow is fixed with outer steel sleeve 5 and following outer steel sleeve 10, upwards there are three oil inlet holes 12 in the footpath that is communicated with joint 7 at feed flow, on it is axial, have three oil flow channel holes 13, be not communicated with mutually between oil inlet hole 12 and the oil flow channel hole 13, the upper end of last lining 4 and last outer steel sleeve 5 is fixed on the special-shaped joint 2, the upper end of going up special-shaped joint links to each other with oil pipe, transmission shaft 1 passes special-shaped joint 2 fixedlys connected with last screw rod 3, the lower end of following lining 9 and following outer steel sleeve 10 is fixed on the pump block connecting vessels 11, going up in special-shaped joint 2 and the pump block connecting vessels 11 has cavity and through hole, is communicated with the chamber and the passage 14 of lining.Fluid sucks screw rod-lining fluid chamber up and down respectively by the inlet of the feed flow connection joint 7 at middle part, moves up and down respectively after revolving supercharging.Following screw rod promotes fluid downwards, the pump block connecting vessels 11 of fluid after the supercharging by the bottom is along moving on the annular pass 14 of outer steel sleeve, in the arrival special-shaped joint 2 places with enter oil pipe after fluid that upper screw upwards pushes away mixes, constantly the fluid of supercharging is transported to ground by oil pipe always.
Embodiment two: will descend screw rod 9 to be connected with oil-submersible motor and drive oil extraction.

Claims (4)

1, a kind of single screw pump, form by oil inlet hole (12), screw rod, lining and outer steel sleeve, it is characterized in that: couple together by the screw rod of scratching in axle (6) screw rod-lining body that two rotation directions is opposite, having fuel feeding to flow to the passage (14) that flows between lining and the outer steel sleeve.
2, single screw pump according to claim 1 is characterized in that: two screw rod-lining bodies are with axial symmetric arrangement.
3, single screw pump according to claim 1, it is characterized in that: the inside thread by feed flow connection joint (7) between last lining (4) and the following lining (9) is connected and fixed, the outside that is communicated with joint (7) at feed flow is fixed with outer steel sleeve (5) and following outer steel sleeve (10), upwards there is an above oil inlet hole (12) in the footpath that is communicated with joint (7) at feed flow, on it is axial, have an above oil flow channel hole (13), be not communicated with mutually between oil inlet hole (12) and oil flow channel hole (13), the upper end of last lining (4) and last outer steel sleeve (5) is fixed on the special-shaped joint (2), the upper end of going up special-shaped joint links to each other with oil pipe, transmission shaft (1) passes special-shaped joint (2) fixedlys connected with last screw rod (3), the lower end of following lining (9) and following outer steel sleeve (10) is fixed on the pump block connecting vessels (11), going up in special-shaped joint (2) and the pump block connecting vessels (11) has cavity and through hole, is communicated with the chamber and the passage (14) of lining.
4, single screw pump according to claim 1 is characterized in that: following screw rod (9) can be connected with oil-submersible motor, drives oil extraction.
CN 93220526 1993-08-05 1993-08-05 Bidirectional symmetrical single-screw oil pump Expired - Fee Related CN2173871Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 93220526 CN2173871Y (en) 1993-08-05 1993-08-05 Bidirectional symmetrical single-screw oil pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 93220526 CN2173871Y (en) 1993-08-05 1993-08-05 Bidirectional symmetrical single-screw oil pump

Publications (1)

Publication Number Publication Date
CN2173871Y true CN2173871Y (en) 1994-08-10

Family

ID=33799648

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 93220526 Expired - Fee Related CN2173871Y (en) 1993-08-05 1993-08-05 Bidirectional symmetrical single-screw oil pump

Country Status (1)

Country Link
CN (1) CN2173871Y (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102392629A (en) * 2011-10-10 2012-03-28 中国石油大学(华东) Pressurizing device for ground drive downhole oil-water separation injection-production system in same well
CN103075340A (en) * 2012-12-29 2013-05-01 重庆明珠机电有限公司 Device for eliminating axial thrust of single-screw pump
CN103174646A (en) * 2011-12-20 2013-06-26 重庆明珠机电有限公司 Tip support device used in single screw pump
CN103382935A (en) * 2013-07-06 2013-11-06 北京工业大学 Novel high pressure seawater hydraulic pump provided with two oppositely arranged tapered threaded rods
CN104632639A (en) * 2014-12-30 2015-05-20 中国矿业大学 Full-wall-face heating double-speed spiral pseudoplastic fluid pumping device and method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102392629A (en) * 2011-10-10 2012-03-28 中国石油大学(华东) Pressurizing device for ground drive downhole oil-water separation injection-production system in same well
CN103174646A (en) * 2011-12-20 2013-06-26 重庆明珠机电有限公司 Tip support device used in single screw pump
CN103075340A (en) * 2012-12-29 2013-05-01 重庆明珠机电有限公司 Device for eliminating axial thrust of single-screw pump
CN103382935A (en) * 2013-07-06 2013-11-06 北京工业大学 Novel high pressure seawater hydraulic pump provided with two oppositely arranged tapered threaded rods
CN104632639A (en) * 2014-12-30 2015-05-20 中国矿业大学 Full-wall-face heating double-speed spiral pseudoplastic fluid pumping device and method

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C19 Lapse of patent right due to non-payment of the annual fee
CF01 Termination of patent right due to non-payment of annual fee