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Pressure balance motor reversing pumping unit

A pumping unit, balancing technology, applied in the direction of production fluid, wellbore/well components, earthwork drilling and production, etc., can solve the difficulty of parameter adjustment, balance balance vertical pumping unit with high frame, four-link beam beam type Problems such as the large structure of the pumping unit

Inactive Publication Date: 2016-09-28
王颖
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The four-link beam pumping unit has a large structure, long transmission chain, low efficiency, high energy consumption, and difficult parameter adjustment. The need for updating is becoming more and more necessary.
[0006] Balanced vertical pumping unit has high frame, inconvenient maintenance, difficult operation, short but relatively fragile transmission chain, technical bottlenecks in unloading hanging pumping and load loss protection, and technical improvement is also required

Method used

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  • Pressure balance motor reversing pumping unit
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  • Pressure balance motor reversing pumping unit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Such as figure 1 As shown: the pressure balance motor reversing pumping unit of the present invention includes a balance wheel (1) placed at the front upper end of the low frame with a screw lifting and crawling mechanism, a driving device at the bottom of the balance wheel (1) or the middle part of the frame base and The pressure balance device at the rear end, in which the balance wheel (1) is a coaxial large and small wheel, and the small wheel is connected with the driving wheel of the driving device by a V-shaped belt or chain, and the large wheel rope groove embedded with wear-resistant filler is double-drawn. Suction balance rope, or fix the flexible suction rope connected with the sucker rod in the well counterclockwise, and fix the balance rope connected with the plunger of the balance hydraulic cylinder (6) through the balance rope connector through the guide wheel clockwise; the pressure balance device The three-in-one isolated balance spherical tank (4) is ...

Embodiment 2

[0067] Such as figure 1 As shown: the main structure of the embodiment of the pressure balance motor reversing pumping unit of the present invention is the same as in Example 1, only the driving device and the pressure balance level have been adjusted, and the specific adjustments are as follows:

[0068]The drive device is a special-shaped motor direct drive device, and its structure is Figure 7 As shown in the structure of the convex double-shaft inner rotor with small diameter at both ends and large diameter in the middle, V-shaped wheel grooves are set on the outer surface of the small-diameter wheels at both ends of the wheel-type inner rotor, and the large-diameter inner rotor is fixed in the middle of the hollow shaft. Axial and radial strong magnets (28) arranged alternately with N and S polarities corresponding to the stator magnetic circuit are arranged on its outer circular surface and both ends; Axial and radial stator cores and windings (27) are set.

[0069] ...

Embodiment 3

[0079] Such as figure 2 As shown: the main structure of the embodiment of the pressure balance motor reversing pumping unit of the present invention is the same as in Example 1, only the driving device and the pressure balance level have been adjusted, and the specific adjustments are as follows:

[0080] The drive device is a combined drive device with a universal motor plus a symmetrical output reducer, and the reducer is a standard series shaft-end symmetrical output reducer.

[0081] The coupling is a non-contact transmission permanent magnet coupling, and its structure is Figure 17 The shown driving disk (49) and the driven disk (50) on the outer ring of the disk surface are symmetrically arranged in the order of N and S poles. The synchronous permanent magnet coupling in which even-numbered strong magnets (51) are arranged symmetrically and densely or dispersedly, between the two disks Interval with pressure bearing (53), driving disc (49) outer edge is provided with ...

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Abstract

The invention provides a pressure balance motor reversing oil pumping unit and belongs to the new field of mechanical-electrical integration application. The pressure balance motor reversing oil pumping unit comprises balance wheels arranged at the front upper end of a short machine frame provided with a screw lifting and creeping mechanism, a driving device located at the lower portion of the balance wheel or the middle of a machine frame base and a pressure balance device arranged at the rear end, wherein the balance wheels are coaxial larger and small wheels, the small wheel is connected with a driving wheel of the driving device through a V-shaped connected belt or a chain, a pumping balance rope is arranged in a large wheel rope groove embedded with an abrasion-resisting stuffing or is anticlockwise fixed in a flexible pumping rope connected with a sucker rod in a well, and a balance rope connected with a balance hydraulic cylinder plunger piston through a guiding wheel and a balance rope connector is clockwise fixed. A three-in-one isolation balance spherical tank of the pressure balance device is arranged at the upper portions of a pressure compensator and a balance hydraulic cylinder which are connected in the short machine frame base and is in directional connection with a relevant connecting pipeline. The pressure balance motor reversing oil pumping unit has the obvious advantages of remarkable energy and material saving, non-shutdown intelligent parameter adjustment, balance adjustment and operation yield, hanger unloading, load missing protection and convenient ground maintenance, has functions of indicator diagram simulation, oil-water metering and remote transmission and control and is an ideal directional updated machine for mechanical oil extraction.

Description

technical field [0001] The invention relates to a pressure balance motor reversing pumping unit, which belongs to the new field of electromechanical integration application. Background technique [0002] In oilfield development, the main means to achieve mechanical oil recovery are traditional four-link beam pumping units and various balance-balanced vertical pumping units. According to incomplete statistics, there are about 2,000,000 oil wells in the world at present, of which the mechanical oil recovery of pumping units accounts for more than 95%. [0003] The traditional four-link beam pumping unit has been used for more than 120 years. It has the advantages of fatigue, reliability, durability, simple operation, easy unloading and pumping, and reliable protection against load loss. Although the model is constantly improving and innovating, its structure and principle remain the same. It still accounts for about 90% of mechanical oil recovery and has become the leading mo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/00
Inventor 王颖
Owner 王颖