Triple combined well washing device and method for geothermal well

A technology for geothermal wells and well flushing, which is applied in the direction of flushing boreholes, wellbore/well components, drilling equipment, etc., and can solve problems such as inconvenient operation, low efficiency of well flushing, and complex structure

Pending Publication Date: 2020-05-08
CHINA UNIV OF GEOSCIENCES (BEIJING) +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For this reason, the embodiment of the present invention provides a triple composite well cleaning device and method for geothermal wells to solve the problems of complex structure, inconvenient operation, and low cleaning efficiency of the well cleaning device in the prior art.

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  • Triple combined well washing device and method for geothermal well
  • Triple combined well washing device and method for geothermal well

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Embodiment Construction

[0027] The implementation mode of the present invention is illustrated by specific specific examples below, and those who are familiar with this technology can easily understand other advantages and effects of the present invention from the contents disclosed in this description. Obviously, the described embodiments are a part of the present invention. , but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0028] Terms such as "upper", "lower", "left", "right", and "middle" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the present invention. The change or adjustment of the relative relationship shall also be regarded as the implementable scope of the present invention without substantive change of the technical content.

[0029] A ...

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Abstract

An embodiment of the invention discloses a triple combined well washing device and method for a geothermal well and relates to the technical field of well washing of the geothermal well. According tothe technical scheme, the device comprises an upper joint and a lower joint which are in thread connection, wherein an upper channel is formed in the upper joint, a lower channel is formed in the lower joint, the upper channel is communicated with the lower channel, a drainage hole is formed in the side wall of the upper channel, an adjusting assembly capable of controlling opening or closing of the leakage hole is also arranged in the upper channel, a stator is fixedly arranged on the outer walls of the upper channel and the lower channel, a turbine rotor is matched and rotationally connectedwith the outer side of the rotor, a casing is mounted on the outer side of the turbine rotor, and steel wires are welded on the outer side wall of the casing. The problem that the well washing devicein the prior art is complicated in structure and inconvenient to operate is solved.

Description

technical field [0001] The embodiment of the present invention relates to the technical field of geothermal well flushing, and in particular to a triple composite well flushing device and method for geothermal wells. Background technique [0002] After the geothermal well is drilled, because the pores of the reservoir are blocked and filled by solid particles during the drilling construction, it is difficult to discharge the high-temperature hot water in the formation smoothly. Therefore, after the geothermal well is drilled, it is necessary to carry out productivity testing and production pumping. Operation. [0003] At present, the well washing mainly adopts high-pressure water jet method, gas lift reverse circulation well washing and piston well washing method. The former removes attachments through hydraulic flushing, and the latter two form high pressure or suction state through the excited pressure generated by the fluid. , Under the action of pressure difference, the...

Claims

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Application Information

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IPC IPC(8): E21B21/00E21B21/10E21B37/00E21B17/02E21B33/12
CPCE21B17/02E21B21/00E21B21/10E21B33/1208E21B37/00
Inventor 张德龙翁炜贺云超赵志涛黄玉文郭强吴烁欧阳志勇徐军军冯美贵
Owner CHINA UNIV OF GEOSCIENCES (BEIJING)
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