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Underground hydraulic sound wave liquid inlet screen pipe and lifting pipe column

A hydraulic and liquid-feeding technology, which is applied in the direction of drill pipe, casing, drilling equipment, etc., can solve the problems of high cost, easy pollution of the environment, and failure to meet the target requirements of green production in oil fields, and achieve the goal of accelerating dissolution and preventing wax deposition Effect

Active Publication Date: 2020-12-15
PETROCHINA CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the existing method of dosing chemicals is not only costly, but also easy to pollute the environment, which does not meet the current target requirements of green production in oil fields

Method used

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  • Underground hydraulic sound wave liquid inlet screen pipe and lifting pipe column
  • Underground hydraulic sound wave liquid inlet screen pipe and lifting pipe column
  • Underground hydraulic sound wave liquid inlet screen pipe and lifting pipe column

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Embodiment Construction

[0044] Before the embodiment of the present invention is further described in detail, the orientation nouns involved in the embodiments of the present invention, such as "upper", "lower", "upper", "lower", "outside", "upper end", "lower end" " etc., all with figure 1 or figure 2 The orientation shown in is a reference, and is only used to clearly describe the downhole hydraulic acoustic wave liquid inlet screen and the lifting string of the embodiment of the present invention, and does not have the meaning of limiting the protection scope of the present invention.

[0045] 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. 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.

[0046] In order ...

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Abstract

The invention discloses an underground hydraulic sound wave liquid inlet screen pipe and a lifting pipe column, and belongs to the technical field of mechanical oil extraction. The underground hydraulic sound wave liquid inlet screen pipe comprises a plurality of hydraulic sound wave generators (1) which are connected end to end. Due to the fact that in each hydraulic sound wave generator (1), formation liquid entering the hydraulic sound wave generator (1) can be treated through oscillation sound waves generated by spraying pressurized liquid to a spring piece (13), and collected liquid entering the hydraulic sound wave generator (1) from the hydraulic sound wave generator (1) at the lower part of the hydraulic sound wave generator (1) can also be treated; and due to the fact that the oscillation sound waves can enable liquid particles to vibrate violently, a net structure of wax crystals in the liquid is destroyed, the oscillation sound waves also can enable the liquid to be emulsified, dissolution of solute is accelerated, viscosity of the liquid is reduced, therefore wax control and viscosity reduction treatment can be achieved on the formation liquid before the formation liquid enters an oil well pump, and the flow speed of a liquid inlet of the oil well pump is effectively increased.

Description

technical field [0001] The invention relates to the technical field of mechanical oil recovery, in particular to a downhole hydraulic acoustic wave liquid inlet screen and a lifting pipe string. Background technique [0002] Since the crude oil contained in the formation fluid itself is viscous and contains wax molecules, wax tends to form on the wall of the lifting string during the continuous lifting of the oil well, which makes the liquid inlet of the oil well pump overflow The cross-sectional area is small, and it is easy to be blocked, which leads to a slow flow rate at the liquid inlet of the oil well pump, which seriously affects the lifting efficiency of the pipe string. [0003] At present, most of the existing technologies adopt the method of adding chemicals, by injecting wax remover and viscosity reducer into the oil well at the wellhead, so as to prevent wax and reduce viscosity for the lifting string, and increase the flow rate of the liquid inlet of the oil we...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B28/00E21B43/08E21B37/00E21B17/00
CPCE21B28/00E21B43/08E21B37/00E21B17/00
Inventor 刘树高赵留阳马晓雁孟晓春陈锐周俊杰郑小雄宋海延
Owner PETROCHINA CO LTD
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