CN2399530Y - Ring drainage electrical underwater screw pump oil extracting unit - Google Patents
Ring drainage electrical underwater screw pump oil extracting unit Download PDFInfo
- Publication number
- CN2399530Y CN2399530Y CN 99224628 CN99224628U CN2399530Y CN 2399530 Y CN2399530 Y CN 2399530Y CN 99224628 CN99224628 CN 99224628 CN 99224628 U CN99224628 U CN 99224628U CN 2399530 Y CN2399530 Y CN 2399530Y
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- CN
- China
- Prior art keywords
- screw pump
- hole
- oil
- well
- utility
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- Expired - Fee Related
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Abstract
The utility model relates to an oil extraction device used in the down-hole draining oil extraction of an oil field and an oil well, particularly applied to a sand well of heavy crude cold extraction, a directional hole, an inclined well and an oil extraction device of a platform production well. The utility model is characterized in that a submersible motor is connected with a screw pump through a lubricating protector, a decelerator and a coupling in turn. The utility model has advantages that an elongated drive rod removal for land occupation reduction to provide a low speed and a high torque; avoiding the sand imbed of the short down-hole units; good heat dissipation conditions for the down-hole units; soft start implementation of the down-hole units; small flow resistance of the well fluid.
Description
The utility model relates to the oil production equipment that the discharge opeing of a kind of oilfield down-hole is recovered the oil, and is particularly useful for the extracting device of oil of heavy oil cold flow production sand output well, directional well or inclined shaft and ocean platform oil recovery well.
At present, known oil extraction pump aspect heavy oil cold flow production, sediment outflow structure and performance all not as screw pump.The ground surface driving formula screw pump oil production system that is now just using, the design of screw pump and manufacturing technology be comparative maturity, and also comparative maturity of downhole electrical motor and downhole cable technology, but because dependence is elongate rod drive screw pump, not only system effectiveness is low, installed power is big, and have rod tube wearing and tearing, and cause the underground work life-span short, pump is subjected to strict restriction aspect dark, hole deviation down; The danger that unit below the existing electric submersible screw pump oil production system thinking, screw pump suction port exists sand to bury, and wanted cable on the unit casing between motor and the pump.
The purpose of this utility model provides a kind of extracting device of oil, and it can overcome original pattern screw-pump oil-extraction equipment and have shortcomings such as efficient is low, installed power is big, working life is short.
The purpose of this utility model is achieved in that it comprises down-hole unit part, surface power supply and control section, middle interconnecting piece branch.Utilize the down-hole motor at down-hole drive screw pump; downhole cable is delivered to the down-hole motor with electricity; between screw pump and down-hole motor; increase mechanical reducer and coupling; reduce rotating speed, improve torque and bear screw pump work axial force and the drive screw pump rotor is done planetary motion, the submersible electric motor that it is characterized in that being arranged in the unit part of down-hole the screw pump top is to be connected to screw pump successively through lubrication protection device, mechanical reducer, coupling.Adopt packet to solve liquid chunnel, in order to reduce down-hole submersible electric motor inrush current and to improve down-hole submersible electric motor detent torque, the frequency conversion soft start control gear is adopted on ground simultaneously.
Housing between down-hole motor, protector, mechanical reducer and the coupling adopts flange to connect, and axle adopts spline housing to connect, and housing and axle are all used screwed connection between coupling and the screw pump, and the down-hole unit is connected with cable by oil pipe with ground.
Adopt the advantage of such scheme to be: can remove elongated driveshaft, reducing ground takes up an area of, provide the slow-speed of revolution, high moment of torsion to screw pump, the down-hole unit is short, prevent that sand from burying the down-hole unit, down-hole unit radiating condition is good, realize down-hole unit soft start, well liquid flow resistance is little, have that installed power is little, system effectiveness is high, the wearing and tearing of no rod tube, can prevent that sand from burying and advantages such as down-hole unit radiating condition is good, at viscous crude extraction sand drain, directional well or inclined shaft, platform well, compare the advantage that possesses skills with economically with other present known oil production system.
Accompanying drawing is a unit general assembly schematic representation of the present utility model.
As seen, adopt flange to be connected between submersible electric motor (7) and lubrication protection device (8), lubrication protection device (8) and retarder (9), retarder (9) and the coupling (10) among the figure, all the other all adopt screwed connection everywhere.Cable (4) one ends link to each other with submersible electric motor (7); the other end links to each other with control cabinet (1); the sealing of packet (13) and plug-in type sucks pipe nipple (12) tap hole on inlet hole under the pump and the pump is separated; after ground VFC cabinet (1) energising; electric current is sent to submersible electric motor (7) by cable (4); submersible electric motor (7) is by lubrication protection device (8); retarder (9); the rotor rotation of shaft coupling (10) drive screw pump (11); oil stream enters screw pump (11) from sucking pipe nipple (12); enter annular space between down-hole unit and the sleeve pipe from screw pump (11) exhaust end again, oil stream along annular space up adopt by.The well liquid that screw pump (11) pump head is discharged flows out flow through behind the outage oil pipe (2) and sleeve pipe (6) annular space extraction.Screw pump (11) lower packet (13) separates with exhaust end with the suction side of plug-in type sealing suction pipe nipple with point.
Among the figure 2 is oil pipe, and 3 is valve, and 5 is connecting short section, and 6 is sleeve pipe.
Claims (1)
1. ring drainage electric submersible screw pump extracting device of oil; comprise down-hole unit part, surface power supply and control section, middle interconnecting piece branch, it is characterized in that the submersible electric motor (7), lubrication protection device (8), mechanical reducer (9), the coupling (10) that are arranged on the screw pump top in the unit part of down-hole are connected to screw pump (11) successively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99224628 CN2399530Y (en) | 1999-07-28 | 1999-07-28 | Ring drainage electrical underwater screw pump oil extracting unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99224628 CN2399530Y (en) | 1999-07-28 | 1999-07-28 | Ring drainage electrical underwater screw pump oil extracting unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2399530Y true CN2399530Y (en) | 2000-10-04 |
Family
ID=34014639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99224628 Expired - Fee Related CN2399530Y (en) | 1999-07-28 | 1999-07-28 | Ring drainage electrical underwater screw pump oil extracting unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2399530Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007104186A1 (en) * | 2006-03-14 | 2007-09-20 | Xihuan Zhao | A suspensory electrical submersible screw pumping system |
| CN101086250B (en) * | 2006-05-23 | 2011-12-28 | 贝克休斯公司 | Capsule for downhole pump modules |
| CN101225738B (en) * | 2008-02-19 | 2012-09-26 | 盘锦三阳石油科技发展有限公司 | Oil field down-hole rotary type mechanical transmission means |
| CN103174642A (en) * | 2013-04-08 | 2013-06-26 | 沈阳新新石油设备有限公司 | High-power stepping motor screw pump of single-core submersible cable |
| CN105464630A (en) * | 2016-01-04 | 2016-04-06 | 山东润发石油设备科技有限公司 | Screw pump directly driven through large-torque submersible motor |
| CN109630400A (en) * | 2018-12-05 | 2019-04-16 | 西安石油大学 | A kind of cooling radiator of motor for subsurface environment |
| CN110872940A (en) * | 2018-08-29 | 2020-03-10 | 中国石油天然气股份有限公司 | Liquid discharge device and using method thereof |
-
1999
- 1999-07-28 CN CN 99224628 patent/CN2399530Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007104186A1 (en) * | 2006-03-14 | 2007-09-20 | Xihuan Zhao | A suspensory electrical submersible screw pumping system |
| US7780428B2 (en) * | 2006-03-14 | 2010-08-24 | Zhao Xihuan | Fluid-guiding and electric conducting system for suspended electric submersible progressing cavity pump (PCP) |
| CN101086250B (en) * | 2006-05-23 | 2011-12-28 | 贝克休斯公司 | Capsule for downhole pump modules |
| CN101225738B (en) * | 2008-02-19 | 2012-09-26 | 盘锦三阳石油科技发展有限公司 | Oil field down-hole rotary type mechanical transmission means |
| CN103174642A (en) * | 2013-04-08 | 2013-06-26 | 沈阳新新石油设备有限公司 | High-power stepping motor screw pump of single-core submersible cable |
| CN105464630A (en) * | 2016-01-04 | 2016-04-06 | 山东润发石油设备科技有限公司 | Screw pump directly driven through large-torque submersible motor |
| CN110872940A (en) * | 2018-08-29 | 2020-03-10 | 中国石油天然气股份有限公司 | Liquid discharge device and using method thereof |
| CN109630400A (en) * | 2018-12-05 | 2019-04-16 | 西安石油大学 | A kind of cooling radiator of motor for subsurface environment |
| CN109630400B (en) * | 2018-12-05 | 2019-12-31 | 西安石油大学 | Motor cooling radiator for underground environment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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 |