CN101162018A - Decelerator-free oil-submersible screw pump - Google Patents
Decelerator-free oil-submersible screw pump Download PDFInfo
- Publication number
- CN101162018A CN101162018A CN 200710019142 CN200710019142A CN101162018A CN 101162018 A CN101162018 A CN 101162018A CN 200710019142 CN200710019142 CN 200710019142 CN 200710019142 A CN200710019142 A CN 200710019142A CN 101162018 A CN101162018 A CN 101162018A
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- torque motor
- decelerator
- brushless
- screw pump
- screw
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Abstract
The invention discloses a novel submersible screw pumping device, and belongs to the oil field rodless pumping device field, in particular an ungeared submersible screw pump which is formed by applying direct current brushless torque motor in the submersible screw pumping device and is characterized in that: a screw pump (4) is connected with the output shaft (2) of a direct current brushless torque motor (1) through a shaft coupling (3). The submersible screw pump driven by the direct current brushless torque motor has simple structure, reliable work and good performance, saves the space in the well and is easy to realize numerical control.
Description
Technical field
The invention belongs to a kind of novel submersible screw extracting device of oil in rodless pumping operation machinery field, oil field, particularly brushless dc torque motor is applied in the screw submerged pump of a kind of decelerator-free that forms in the submersible screw extracting device of oil.
Background technique
Having bar to recover the oil in petroleum industry is traditional a kind of oil production method, but because of its intrinsic power consumption, expend problems such as disconnected bar that raw material and side-abrasion of rod string cause or pipe leakage, perplexing the field operations personnel for many years always.
Be accompanied by the development of motor technology and the breakthrough of mechanical transmissioning technology, occurred motor is placed the down-hole, directly drive the artificial lift technology of screw pump rotor rotation by retarder.This technology has been cancelled sucker rod, has solved the side-abrasion of rod string problem completely, but longer because of its Transmitted chains, the retarder volume is limited, and the moment of torsion that bears is easier to greatly break down, and influences the working life of complete machine.Through facts have proved that the main cause that influence complete machine working life is that retarder damages, and has become the principal element that the restriction electric submersible screw pump develops the working life of retarder.
Summary of the invention
The screw submerged pump that the purpose of this invention is to provide a kind of decelerator-free so that reduce the fault of complete machine, prolongs electric submersible screw pump service time.
The object of the present invention is achieved like this: design a kind of screw submerged pump of decelerator-free, it is characterized in that: screw pump 4 is connected with the output shaft 2 of brushless dc torque motor 1 by coupling drive 3.
Described brushless dc torque motor 1 can be an external rotor electric machine.
Described brushless dc torque motor 1 also can be an inner rotor motor.
Described brushless dc torque motor 1 diameter is between φ 90～φ 160, and length is between 3～10 meters.
Between the output shaft 2 of described brushless dc torque motor 1 and the coupling drive 3 protector 10 is arranged.
Described protector 10 is precipitating type or capsule-type protector, is lubricant oil in the protector 10.
Advantage of the present invention is: adopt brushless dc torque motor, brushless dc torque motor is elongate (diameter is between φ 90～φ 160, and length is between 3～10 meters), directly drives coupling drive drive screw pump rotor.Thoroughly solved the side-abrasion of rod string problem.The advantage that not only has present screw pump, and the Transmitted chains of minimizing system have improved system effectiveness, and complete machine length has also shortened.The digital drive control system of dc brushless motor can reach real-time monitoring submersible screw revolution speed, regulate discharge capacity to adapt to the fluid supply capacity of oil well.Can be used for open well, also can be used for the oil recovery of inclined shaft, horizontal well, particularly ocean platform.The screw submerged pump that brushless dc torque motor drives is simple in structure, reliable operation, function admirable, space, saving down-hole, easily realize digital control.
Description of drawings
The present invention will be further described below in conjunction with embodiment's accompanying drawing.
Fig. 1 is the embodiment of the invention 1 structural representation;
Fig. 2 is the embodiment of the invention 2 structural representations;
Fig. 3 is that the embodiment of the invention is used schematic representation.
Among the figure: 1, brushless dc torque motor; 2, output shaft; 3, coupling drive; 4, screw pump; 5, brushless dc torque motor fuselage; 6, wellhead assembly; 7, ground control system; 8, oil-submersible cable; 9, well head; 10, protector.
Embodiment
As shown in Figure 1, brushless dc torque motor fuselage 5 shapes are elongate, and diameter is between φ 90～φ 160, and length is between 3～10 meters.The output shaft 2 of brushless dc torque motor 1 is connected with the lower shaft end of coupling drive 3; The last axle head of coupling drive 3 is connected with the rotor lower end of screw pump 4.The rotor of the output shaft 2 of brushless dc torque motor 1, the axle of coupling drive 3, screw pump 4 coexists on the axis.
Different with Fig. 1 is that Fig. 2 has provided a kind of structural representation with protector.It has protector 10 between brushless dc torque motor 1 and coupling drive 3, protector 10 is precipitating type or capsule-type protector, is lubricant oil in the protector 10.Can protect assemblies such as brushless dc torque motor 1, bearing by increasing protector 10.
Fig. 3 is the concrete application of enforcement 2 in engineering.
As can be seen from the figure, brushless dc torque motor 1 places the bottom of underground equipment, and output shaft 2 vertically upward.Output shaft 2 is connected with 3 of coupling drives by protector 10 again, and the axle by coupling drive 3 is connected with the rotor lower end of screw pump 4 then.Whole connection procedure from bottom to top.Brushless dc torque motor 1 provides the power of low rotation speed large torque during work, and middle no speed reducer, motor output shaft 2 directly pass through the rotor of coupling drive 3 drive screw pumps 4.Brushless dc torque motor 1 is placed on the down-hole and adopts the elongated rod-shaped electric machine structure, to its stepless speed regulation, makes rotating speed be controlled at 10～200 rev/mins by driver.
At well head 9 wellhead assembly 6 is arranged, wellhead assembly 6 is connected with ground control system 7, and the oil-submersible cable 8 of control usefulness leans on the borehole wall downwards up to brushless dc torque motor 1 from well head 9.
The rotating speed of brushless dc torque motor 1 is by ground control system 7 controls, ground control system 7 collects underground signal, underground signal is given the liquid supply rate of producing well, by judging the fluid supply capacity of oil well, make judgement, ground control system 7 controls improve the rotating speed of brushless dc torque motor 1 when fluid supply capacity is better, increase lifting rate; Ground control system 7 controls reduce the rotating speed of brushless dc torque motor 1 when fluid supply capacity is bad, reduce lifting rate, realize the dynamic real-time regulation and control with this, satisfy the demand of oilwell produced fluid amount.
Claims (6)
1. the screw submerged pump of a decelerator-free is characterized in that: screw pump (4) is connected with the output shaft (2) of brushless dc torque motor (1) by coupling drive (3).
2. the screw submerged pump of a kind of decelerator-free according to claim 1, it is characterized in that: described brushless dc torque motor (1) can be an external rotor electric machine.
3. the screw submerged pump of a kind of decelerator-free according to claim 1, it is characterized in that: described brushless dc torque motor (1) also can be an inner rotor motor.
4. the screw submerged pump of a kind of decelerator-free according to claim 1, it is characterized in that: described brushless dc torque motor (1) diameter is between φ 90～φ 160, and length is between 3～10 meters.
5. the screw submerged pump of a kind of decelerator-free according to claim 1 is characterized in that: between the output shaft (2) of described brushless dc torque motor (1) and the coupling drive (3) protector (10) is arranged.
6. the screw submerged pump of a kind of decelerator-free according to claim 5, it is characterized in that: described protector (10) is precipitating type or capsule-type protector, is lubricant oil in the protector (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710019142 CN101162018A (en) | 2007-11-16 | 2007-11-16 | Decelerator-free oil-submersible screw pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710019142 CN101162018A (en) | 2007-11-16 | 2007-11-16 | Decelerator-free oil-submersible screw pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101162018A true CN101162018A (en) | 2008-04-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710019142 Pending CN101162018A (en) | 2007-11-16 | 2007-11-16 | Decelerator-free oil-submersible screw pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101162018A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305212A (en) * | 2011-09-02 | 2012-01-04 | 天津荣亨集团股份有限公司 | Down-hole high load-bearing pressure distribution apparatus of electric submersible progressive cavity pump |
| CN102635538A (en) * | 2012-04-28 | 2012-08-15 | 胡军 | Small-sized brushless direct current self-absorption multi-cavity pump provided with outer rotor |
| CN102734155A (en) * | 2012-07-20 | 2012-10-17 | 赵锡寰 | Energy-saving start device of submersible screw pump unit |
| CN104563972A (en) * | 2015-01-12 | 2015-04-29 | 重庆科技学院 | Small power deep well pumping unit |
| CN106801592A (en) * | 2016-12-23 | 2017-06-06 | 中国石油天然气股份有限公司 | Without bar closed loop oil extraction system |
| CN115961915A (en) * | 2021-12-14 | 2023-04-14 | 黑龙江景宏石油设备制造有限公司 | Screw pump oil production system |
-
2007
- 2007-11-16 CN CN 200710019142 patent/CN101162018A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305212A (en) * | 2011-09-02 | 2012-01-04 | 天津荣亨集团股份有限公司 | Down-hole high load-bearing pressure distribution apparatus of electric submersible progressive cavity pump |
| CN102635538A (en) * | 2012-04-28 | 2012-08-15 | 胡军 | Small-sized brushless direct current self-absorption multi-cavity pump provided with outer rotor |
| WO2013159425A1 (en) * | 2012-04-28 | 2013-10-31 | Yang Zhujun | Micro brushless direct-current self-priming external-rotor multi-chambered pump |
| CN102734155A (en) * | 2012-07-20 | 2012-10-17 | 赵锡寰 | Energy-saving start device of submersible screw pump unit |
| CN102734155B (en) * | 2012-07-20 | 2014-12-03 | 赵锡寰 | Energy-saving start device of submersible screw pump unit |
| CN104563972A (en) * | 2015-01-12 | 2015-04-29 | 重庆科技学院 | Small power deep well pumping unit |
| CN104563972B (en) * | 2015-01-12 | 2017-11-14 | 重庆科技学院 | Small-power deep well machine |
| CN106801592A (en) * | 2016-12-23 | 2017-06-06 | 中国石油天然气股份有限公司 | Without bar closed loop oil extraction system |
| CN115961915A (en) * | 2021-12-14 | 2023-04-14 | 黑龙江景宏石油设备制造有限公司 | Screw pump oil production system |
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Open date: 20080416 |