Rotating device for assisting geothermal downhole casing pipe

Abstract

The invention discloses a rotating device assisting in casing running of a geothermal well, and relates to the field of casing running auxiliary devices.The rotating device comprises a first chuck and a second chuck, clamping blocks are fixed to the bottom of the first chuck and the bottom of the second chuck correspondingly, storage grooves are formed in the first chuck and the second chuck correspondingly, fixing rods are fixed to the interiors of the storage grooves, and the fixing rods are fixed to the interiors of the storage grooves correspondingly; the outer wall of the fixing rod is sleeved with a sleeve block, and a spring is fixed to one end of the fixing rod. According to the device, the purpose of assisting a put-down sleeve conveniently is achieved, the first chuck and the second chuck are installed above the pipe rolling machine through the clamping blocks, then the sleeve passes through the interiors of the first chuck and the second chuck, the rolling wheels are attached to the outer wall of the sleeve, friction force is reduced in the sleeve rotating process, and the sleeve rotating speed is increased. And in the descending process of the sleeve, the sleeve is prevented from deviating, a limiting rod enters a sliding groove to prevent a sleeve block from deviating, and the sleeve is better limited and assisted.

Description

technical field [0001] The invention relates to the field of casing running auxiliary devices, in particular to a rotating device for assisting geothermal downhole casings. Background technique [0002] As a cheap and less polluting energy source, geothermal resources have been recognized by the society, and its development is in the ascendant. North China contains huge geothermal energy sources. Its thermal storage depth is generally 1000-2000 meters, and the purpose of water intake is the Neogene Museum. Tao Formation, the commonly used casing types of geothermal wells in North China are divided into variable diameter connection type and seated connection type. The running of the casing is a crucial step in the geothermal well project, and its success or failure is related to the success or failure of the entire drilling project. The prevention of possible accidents during the casing running process and the treatment of problems have become an important part of the geother...

AI Technical Summary

Problems solved by technology

[0004] Based on this, the object of the present invention is to provide an auxiliary geothermal downhole casing rotation device to solve the problem that when the existing casing is lowered by a pipe twister, the casing may be shifted, thereby causing the entire work to fail, resulting in The efficiency is reduced, and the technical problem that the casing needs to be vertically docked when docking

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