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:
May. 14, 2024
Filed:
May. 25, 2021
China National Petroleum Corporation, Beijing, CN;
Cnpc Chuanqing Drilling Engineering Company Limited, Sichuan, CN;
Jichuan Zhang, Sichuan, CN;
Dengyun Lu, Sichuan, CN;
Jing Bai, Sichuan, CN;
Yi Xie, Sichuan, CN;
Lei Li, Sichuan, CN;
Kexu Chen, Sichuan, CN;
Chongjun Huang, Sichuan, CN;
Lichun Jia, Sichuan, CN;
Dejun Zhang, Sichuan, CN;
Zhilin Li, Sichuan, CN;
Bin Mao, Sichuan, CN;
CHINA NATIONAL PETROLEUM CORPORATION, Beijing, CN;
CNPC CHUANQING DRILLING ENGINEERING COMPANY LIMITED, Sichuan, CN;
Abstract
A jet flow adjustment method for rotary steerable downhole release includes steps of: defining a diversion ratio p of a jet nozzle by a ground control system; and sending the diversion ratio p of the jet nozzle to a control unit of a downhole rotary steerable system; and determining an opening areas of the jet nozzle by the control unit according to the diversion ratio p of the jet nozzle and an equivalent channel area S of a drilling tool; controlling an adjustable bypass valve by the control unit of the downhole rotary steerable system according to the calculated opening area s of the jet nozzle, so as to control an overlapping area between sector holes of a rotor end and a stator end, thereby opening the jet nozzle for release. The present invention has simple control and strong release ability.