CN2394028Y - Low speed bidirectional immersed screw-rod pump - Google Patents
Low speed bidirectional immersed screw-rod pump Download PDFInfo
- Publication number
- CN2394028Y CN2394028Y CN 98239542 CN98239542U CN2394028Y CN 2394028 Y CN2394028 Y CN 2394028Y CN 98239542 CN98239542 CN 98239542 CN 98239542 U CN98239542 U CN 98239542U CN 2394028 Y CN2394028 Y CN 2394028Y
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- pump
- oil
- motor
- screw
- screw pump
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- Expired - Fee Related
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Abstract
The utility model relates to a low speed bidirectional oil immersed screw pump which is a downhole oil well pump for mechanical oil production of oil fields. The utility model is especially suitable for extraction of thick oil with sand. The pump is composed of an oil immersed motor 1, a motor protector 2, a speed reducer 3, a double rotation screw pump 4, a cable 5, an oil pipe 6, etc. Because the pump uses the downhole oil immersed motor to directly drive the screw pump, and eliminates a sucker rod string which is used as a driving shaft in the prior art, production accidents caused by disengagement of the sucker rod string can be avoided. Because the descent depth can not be limited, the pump can be used in inclined wells and directional wells. The mechanical efficiency can be enhanced, and the ideal oil production effect can be get.
Description
The utility model relates to the down-hole screw submerged pump that uses in a kind of oil field machinery oil, is particularly suitable for thickened oil recovery, belongs to the oil recovery machiner class.
In the prior art, the screw pump that uses in the oil field machinery oil generally all is a surface drive single screw pump, by the ground motor driving, after retarder slows down, drives the down-hole helical rotor pump by rod string again.This kind of drive, mechanical efficiency are very low, add that the sucker rod that serves as transmission shaft is one and reaches the above elongate rod of km, and its strength and stiffness all are very limited, so pump setting depth is restricted.And as the rod string of transmitting torque, because its slenderness ratio is very big, be a rods in essence, the frequent and borehole wall rubs in the work, causes rod broken and dropout, makes the oil well can't ordinary production.
The purpose of this utility model is at problems of the prior art, and a kind of down-hole drive screw pump without the rod string transmission is provided, so that improve the reliability and the applicability of oil recovery efficiency and work.
The purpose of this utility model is to realize by the low-speed bidirectional screw submerged pump that a kind of down-hole of design oil-submersible motor directly drives.This pump is made up of oil-submersible motor, well dynamic cable, motor protecter, retarder and reverse-flighted screw pump etc.; oil-submersible motor is a slowspeed machine; its electric power is provided by the well dynamic cable; be connected with motor protecter above the oil-submersible motor; be retarder above the motor protecter, retarder links to each other with the reverse-flighted screw pump.The reverse-flighted screw pump is a kind of pump of particular design, comprises left-handed pump, flexible coupling, dextrorotation pump, cross-channel and urceolus etc.The rotor of reverse-flighted screw pump is by the output shaft transferring power of retarder, and its stator then links to each other with flow string by urceolus.All can normally pump in order to revolve screw pump about guaranteeing, design cross-channel.About revolve the design of screw pump and flexible coupling the huge axial force that produces when having eliminated the helical rotor pump operation of design, make the screw pump operation more steady.
The low-speed bidirectional screw submerged pump is a kind of continuous gradual chamber pump, is the soft or hard friction pair between rotor and the stator, and stator is made by the high strength alloy steel through special thermal treatment, and rotor is vulcanized on steel shell by oil resistant rubber.This particular structure feature not only makes it be suitable for thickened oil recovery, but also has the function of taking sand and sediment outflow, has overcome the problem of the easy sand card of conventional oil well pump.In addition, because the driving mode of this pump is that the down-hole oil-submersible motor directly drives, following well depth can reach below the 1500m, also can be used in dog-leg the degree bigger inclined shaft and directional well.
Low-speed bidirectional screw submerged pump of the present utility model compared with prior art has following effect and advantage:
1, the drive form of this screw pump changes down-hole oil-submersible motor driving into by the ground motor driving, has improved mechanical efficiency greatly, has avoided the production accident that rod parting caused.
2, the design of low speed double rotational directions screw pump adds that flexible coupling connects and the fuel-displaced structure of cross-channel, has eliminated the axial force in the work, has strengthened the balance of operation, has obtained desirable oil recovery effect.
3, owing to, not only descend well depth unrestricted, and can in inclined shaft and directional well, use without the rod string transmission.
Accompanying drawing 1 is the structural representation of low-speed bidirectional submersible screw pump-unit
Accompanying drawing 2 revolves the screw pump structural representation about being
Below in conjunction with accompanying drawing 1 and accompanying drawing 2 given embodiments the utility model is further described.
Low-speed bidirectional screw submerged pump among the embodiment is made up of oil-submersible motor 1, motor protecter 2, retarder 3, double rotational directions screw pump 4, cable 5 and oil pipe 6 etc.Oil-submersible motor 1 is eight grades of motors, and revolution is 660r/min, and retarder 3 is the level Four retarder, and output revolutions is 200r/min, and reverse-flighted screw is made up of left-handed pump 7, flexible coupling 8, dextrorotation pump 9 and cross-channel 10 etc.Left-handed pump 7 is following, and dextrorotation pump 9 is last, and the centre is a flexible coupling 8, then is in top for left-handed pump 7 and dextrorotation pump 9 provide the cross-channel 10 of different oil flow channels.
During the work of low-speed bidirectional screw pump, through cable 5 aboveground electric energy is transferred to oil-submersible motor 1, convert it into mechanical energy, through retarder 3 rotating speed of oil-submersible motor 1 output is slowed down by 3.45: 1 speed again, speed about making the reverse-flighted screw pump with 200r/min is normally worked, and via cross-channel 10 and oil pipe 6 well liquid is drawn into ground continuously then.
Claims (2)
1, the low-speed bidirectional screw submerged pump that uses in a kind of mechanical oil recovery; form by oil-submersible motor (1), motor protecter (2), retarder (3), double rotational directions screw pump (4), cable (5) and oil pipe (6) etc.; it is characterized in that: oil-submersible motor (1) is a slowspeed machine; place the down-hole; provide electric energy by power cable (5); be connected with motor protecter (2) above the oil-submersible motor (1); retarder (3) is installed above the motor protecter (2), and retarder (3) links to each other with double rotational directions screw pump (4).
2, low-speed bidirectional screw submerged pump according to claim 1, it is characterized in that: the reverse-flighted screw pump is made up of left-handed pump (7), flexible coupling (8), dextrorotation pump (9) and cross-channel (10) etc., left-handed pump (7) is following, dextrorotation pump (9) is last, the centre is flexible coupling (8), revolves pump and provides the cross-channel of different liquid chunnels (10) then to be in top for left and right.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98239542 CN2394028Y (en) | 1998-12-01 | 1998-12-01 | Low speed bidirectional immersed screw-rod pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98239542 CN2394028Y (en) | 1998-12-01 | 1998-12-01 | Low speed bidirectional immersed screw-rod pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2394028Y true CN2394028Y (en) | 2000-08-30 |
Family
ID=33986897
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98239542 Expired - Fee Related CN2394028Y (en) | 1998-12-01 | 1998-12-01 | Low speed bidirectional immersed screw-rod pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2394028Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016037449A1 (en) * | 2014-09-09 | 2016-03-17 | 赵锡寰 | Submersible oil well pump unit having downhole drive conversion apparatus |
-
1998
- 1998-12-01 CN CN 98239542 patent/CN2394028Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016037449A1 (en) * | 2014-09-09 | 2016-03-17 | 赵锡寰 | Submersible oil well pump unit having downhole drive conversion apparatus |
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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 |