Shuangjia-type torsion-reducing short section
Category:
Test
Author:
Northern Double Jia
Source:
Northern Double Jia
Publish time:
2021-03-09 17:37
[Summary description]
The down-twisting short section is a new type of down-twisting tool, mainly used to connect short-radius horizontal sections and large-angle well sections. It is recommended to connect one down-twisting short section every 60ft. After its use, the torque can be reduced by 25-35%. Its spiral inner sleeve, straight outer sleeve and core shaft are in a relatively non-rotating state. It can form an isolation point supported by the straight outer sleeve between the drill pipe and the casing, which can reduce the rotary table torque; it can effectively prevent direct contact between the drill pipe and the casing, reduce the wear and tear of the drill pipe and casing, and protect the casing; reduce the friction contact force between the drill pipe and the casing, and reduce the drilling resistance. It greatly improves the service life of the drill pipe.
The down-twisting short section is a new type of down-twisting tool, mainly used to connect short-radius horizontal sections and large-angle well sections. It is recommended to connect one down-twisting short section every 60ft. After its use, the torque can be reduced by 25-35%. Its spiral inner sleeve, straight outer sleeve, and core shaft are in a relatively non-rotating state. An isolation point supported by the straight outer sleeve can be formed between the drill pipe and the casing, which can reduce the rotary table torque; it can effectively prevent direct contact between the drill pipe and the casing, reduce the wear and tear of the drill pipe and casing, and protect the casing; reduce the frictional contact force between the drill pipe and the casing, and reduce the drilling resistance. It greatly improves the service life of the drill pipe.
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