Matched technical pipe column for cable-type pumping unit

A technology of process pipe string and pumping unit, which is applied in the field of supporting process pipe string of cable pumping unit, can solve the problems such as the inability to monitor the dynamic liquid level in the well, and achieve the effects of long-term production, improved adaptability and reduced wear

Inactive Publication Date: 2019-09-06
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, setting the packer makes it impossible to monitor downhole fluid levels during production

Method used

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  • Matched technical pipe column for cable-type pumping unit
  • Matched technical pipe column for cable-type pumping unit
  • Matched technical pipe column for cable-type pumping unit

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Embodiment Construction

[0050] In order to make the technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Unless otherwise defined, all technical terms used in the embodiments of the present invention have the same meanings as commonly understood by those skilled in the art.

[0051] The embodiment of the present invention provides a kind of supporting process string of cable pumping unit, such as figure 1 shown, combined with figure 2 , image 3 and Figure 4 , the process string includes: the first oil pipe 1, a plurality of oil pump barrels 2, the second oil pipe 3 and the valve 4 connected in sequence from the wellhead downwards, and the steel wire rope that passes through the first oil pipe 1 and enters the oil well pump barrel 2 5, and the plunger 6 connected with the lower end of the wire rope 5.

[0052] Wherein, the plunger 6 includes a plurali...

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Abstract

The invention discloses a matched technical pipe column for a cable-type pumping unit, and belongs to the technical field of oilfield oil production equipment. The matched technical pipe column comprises a first oil pipe, a plurality of oil-well pump cylinders, a second oil pipe, a valve, a steel wire rope and a plunger, wherein the first oil pipe, the oil-well pump cylinders, the second oil pipeand the valve are sequentially connected downwards from a wellhead, the steel wire rope penetrates through the first oil pipe to enter the oil-well pump cylinders, and the plunger is connected with the lower end of the steel wire rope; the plunger comprises a plurality of leather cups sequentially arranged from top to bottom, and lips of the leather cups are upward; when the plunger moves upwards,the edges of the lips of the leather cups can make close contact with the inner walls of the oil-well pump cylinders; and when the plunger moves downwards, gaps can be formed between the edges of thelips of the leather cups and the inner walls of the oil-well pump cylinders. The plunger in the pipe column adopts a soft-sealing plunger, the sealing effect can be ensured, the plunger can be further prevented from being abraded, and the service life of the plunger is prolonged.

Description

technical field [0001] The invention relates to the technical field of oil production equipment in oilfields, in particular to a matching process string for a cable pumping unit. Background technique [0002] Cable pumping unit is a new type of lifting equipment used for oil production in oil fields. It adopts the form of wire rope reel to realize the reciprocating operation of plunger in the wellbore, so as to perform oil production. It is widely used in low energy wells and low permeability oil wells. The operation mode of the plunger in the wellbore is divided into a full wellbore operation mode and a non-full wellbore operation mode. Among them, in the full wellbore operation mode, the plunger is directly lowered into the tubing to reciprocate between the bottom of the well and the wellhead; Reciprocating operation in the oil well pump barrel. Compared with the full wellbore operation mode, the non-full wellbore operation mode does not require special treatment on the ...

Claims

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Application Information

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IPC IPC(8): E21B17/00E21B43/00
CPCE21B17/00E21B43/00
Inventor 韩岐清韩涛郑小雄孙殿新赖学明张兵陈锐陈文徽董洁胡南李莉
Owner PETROCHINA CO LTD
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