The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 05, 2023
Filed:
Sep. 28, 2022
Southwest Petroleum University, Chengdu, CN;
Sichuan Xieming Technology Co., Ltd., Chengdu, CN;
Jialin Tian, Chengdu, CN;
Haolin Song, Chengdu, CN;
Yinglin Yang, Chengdu, CN;
Yanniu Ren, Chengdu, CN;
Lin Yang, Chengdu, CN;
Zhe Zhang, Chengdu, CN;
Bo He, Chengdu, CN;
Jun Li, Chengdu, CN;
Yu Wei, Chengdu, CN;
Lei Cha, Chengdu, CN;
Southwest Petroleum University, Chengdu, CN;
Sichuan Xieming Technology Co., Ltd., Chengdu, CN;
Abstract
A drill string rotation controller includes an anti-torque balance module, a TC bearing retaining ring, an upper TC bearing, an upper thrust ball bearing, an upper Haval ring, a middle seal retaining ring, an upper mandrel, an upper shell, a rotary control cylinder, an upper spring, a spline shell, a spline sleeve, a spline mandrel, a lower shell, a spring push sleeve, a lower spring, a floating piston, a lower mandrel, a bulkhead, a lower thrust ball bearing, a lower Haval ring, a lower TC bearing, a conversion joint, an anti-drop joint, a lower joint, and a control pin. The rotary control cylinder causes the spline sleeve to switch the transmission relationship between the spline mandrel and shell. Therefore, the drill string rotation controller controls the conversion between the composite drilling mode and the directional drilling mode.