Lifting device of electric submersible piston pump in horizontal wells

A lifting device and plunger pump technology, applied in the direction of pumps, wellbore/well parts, pumps with flexible working elements, etc., can solve the problems of low production cost, prolonging the pump inspection period, and reducing the operation and maintenance workload of rod system factors and other issues to achieve the effect of adjusting the displacement

Active Publication Date: 2007-08-01
DAQING OILFIELD CO LTD +1
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AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem that the existing horizontal well lifting device adopts electric submersible pump and hydraulic jet pump, which leads to high investment and large displacement, which is difficult to meet the needs, and the use of rod pumps cannot solve the problems of eccentric wear between rods and pipes, etc., the present invention Provided is a

Method used

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  • Lifting device of electric submersible piston pump in horizontal wells
  • Lifting device of electric submersible piston pump in horizontal wells
  • Lifting device of electric submersible piston pump in horizontal wells

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with accompanying drawing:

[0016] As shown in Figure 1, the electric submersible plunger pump lifting device of this kind of horizontal well includes a Christmas tree, oil pipe 42, submersible oil cable 41, ground frequency conversion control cabinet 40, small-diameter high-elastic permanent magnet linear motor 44, horizontal lifting The oil well pump 43 is connected by a small-diameter high-elastic permanent magnet linear motor 44 to the rear end of the horizontal lift oil well pump 43, and the front end of the horizontal lift oil well pump 43 is connected to the oil pipe 42, through the frequency conversion control cabinet on the ground 40. The submersible cable 41 provides electric energy for the small-diameter high-elastic permanent magnet linear motor 44 . The stator of the small-diameter high-elastic permanent magnet linear motor 44 is connected with the pump barrel of the horizontal lift oil w...

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Abstract

A horizontal well submersible electric plug pump lifter resolves the problems of prior horizontal well lifter as high cost and large discharge. The invention is characterized in that the device also comprise a small-diameter high-flexibility permanent-magnetic straight motor (44) and a horizontal lifting oil pump (43), wherein, the motor (44) is mainly formed by a stator and a rotor, and the oil pump (43) is mainly formed by a fixed flange, a pump cylinder (23), a plug (22), upper and lower movable flanges, and the stator is connected with the pump cylinder (23) and the rotor is connected with the plug (22). The invention has low cost and the application in low discharge, for resolving the deflected abrasion between rod and tube, to work at variable flow pressures.

Description

Technical field: [0001] The invention relates to a lifting device in the field of oil production engineering in oil fields, in particular to a rodless pump lifting device applied in the field of horizontal well oil production. Background technique: [0002] At present, many peripheral low-yield and low-permeability oil fields in China have been developed using horizontal well technology. With the decreasing oil resources, the scale of using horizontal well is expanding year by year. At present, the lifting technologies used in horizontal wells mainly include rodless pump lifting technologies such as electric submersible pumps and hydraulic jet pumps. However, due to high investment and large displacement, these mature technologies are difficult to meet the requirements of low permeability and low water production. The needs of flat well lifting, especially the deep pumping needs of horizontal wells and high-inclination directional wells are difficult to meet. However, if th...

Claims

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Application Information

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IPC IPC(8): F04B47/06E21B43/00
Inventor 程杰成王再山卢东风冯春国姬生柱侯维前葛东元孙宏
Owner DAQING OILFIELD CO LTD
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