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A method for cleaning the wall of a geothermal well

A technology for geothermal wells and borehole walls, which is applied to wellbore/well components, earthwork drilling, cleaning equipment, etc., can solve the problems of low stability of geothermal well borehole wall cleaning devices, improve stability and safety, and improve Stability, high stability effect

Active Publication Date: 2022-02-08
郭山河
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a geothermal well wall cleaning device, which has the advantage of high stability and solves the problem of low stability of common geothermal well wall cleaning devices

Method used

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  • A method for cleaning the wall of a geothermal well
  • A method for cleaning the wall of a geothermal well

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Experimental program
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Effect test

no. 1 approach

[0017] First implementation: see figure 1 , a geothermal well wall cleaning device, comprising a fixed plate 1, the left and right sides of the bottom of the fixed plate 1 are fixedly connected with a support plate 2, by setting the support plate 2, it plays the role of supporting the fixed plate 1, the support plate 2 The bottom is fixedly connected with a shelving block 27, and the bottom of the shelving block 27 is fixedly connected with a shock-absorbing pad 28. By setting the shelving block 27 and the shock-absorbing pad 28, the shock resistance of the whole device is improved, and the internal components of the cleaning device are avoided from being damaged by vibration. The left side of the top of the fixed plate 1 is fixedly connected with a rotating motor 3, the output shaft of the rotating motor 3 is fixedly connected with a rotating shaft 4, and the surface of the rotating shaft 4 is fixedly connected with a winding wheel 5, and the surface of the rotating shaft 4 is...

no. 2 approach

[0021] The second embodiment: a geothermal well wall cleaning device, including a fixed plate 1, the left and right sides of the bottom of the fixed plate 1 are fixedly connected with a support plate 2, and the left side of the top of the fixed plate 1 is fixedly connected with a rotating Motor 3, the output shaft of the rotating motor 3 is fixedly connected with a rotating shaft 4, the surface of the rotating shaft 4 is fixedly connected with a winding wheel 5, and the top of the fixed plate 1 is fixed on the right side of the rotating shaft 4 Connected with a stabilizing plate 6, the top on the left side of the stabilizing plate 6 is fixedly connected with a first runner 7, the top of the stabilizing plate 6 is fixedly connected with a second runner 8, and the top on the right side of the stabilizing plate 6 is fixed A third runner 9 is connected, the surface of the reel 5 is wound with a first fixed rope 10, and the end of the first fixed rope 10 away from the reel 5 passes ...

no. 3 approach

[0028] The third embodiment: a method for cleaning the well wall of a geothermal well. A cleaning device is suspended on the ground on both sides of the entrance of the geothermal well through a door-shaped support frame, and the rotating motor and the first fixed rope are used to drive the cleaning device on the support. The cleaning device moves up and down in the well body of the geothermal well. The cleaning device rotates and cleans the well wall while moving downward in the well body stably with the help of the multi-leg support structure arranged up and down adjacent to it and the electric rotary cleaning module with cleaning brushes. When the multi-leg support structure and the cleaning module are in contact with the well wall, the springs in the support structure are self-adaptive and elastic. The electric winding device is composed of a second fixed rope of a certain length pre-rolled on the roller of the winding device. The two ends of the rotating shaft of the rolle...

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Abstract

The invention discloses a method for cleaning the well wall of a geothermal well. When the cleaning device goes down the well for the first time, the mechanical transmission structure first releases a section of the second fixed rope. The rollers are pulled straightly toward the center of symmetry at the same time until the outer boundaries of multiple supporting rollers are smaller than the size of the wellhead, and then the downhole operation is performed. After the entire cleaning device enters the well, the reverse operation is performed, and the rollers rotate in the opposite direction to drive the machine. The transmission structure simultaneously pushes multiple support rollers away from the center of symmetry and moves in a straight line until the second fixed rope is released and the rope body is retracted. At the same time, the rotating motor on the ground starts to work, which solves the problem of cleaning the well wall of geothermal wells. The problem of low stability of the device makes the transmission structure more stable, improves the stability and safety of the cleaning process, makes the cleaning efficiency high, greatly improves the work efficiency, and brings great convenience to users.

Description

technical field [0001] The invention relates to the technical field of geothermal well wall cleaning, in particular to a geothermal well wall cleaning device and a cleaning method. Background technique [0002] Geothermal wells refer to methods and devices for generating electricity from geothermal energy with a depth of about 3,500 meters or hot spring water with a water temperature greater than 30°C. It belongs to high-temperature geothermal; 90℃~150℃, existing in the form of mixture of water and steam, etc., belongs to medium-temperature geothermal; Low temperature geothermal, after completion of geothermal well, due to the long-term use of circulating fluid during drilling, the circulating fluid will form mud skin on the well wall, if not handled properly, it will directly affect the next step of well cleaning operation, common geothermal well wall cleaning The stability of the device is low. Due to the unstable design of the transmission structure, the cleaning process...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B37/00
CPCE21B37/00
Inventor 金峰
Owner 郭山河
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