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:
Nov. 25, 2025
Filed:
Apr. 07, 2023
China Petroleum & Chemical Corporation, Beijing, CN;
Sinopec Oilfield Service Corporation, Beijing, CN;
Sinopec Shengli Petroleum Engineering Co., Ltd, Shandong, CN;
Drilling Technology Research Institute of Sinopec Shengli Petroleum Engineering Co., Ltd, Shandong, CN;
Honglin Tang, Shandong, CN;
Han Liu, Shandong, CN;
Hui Zhang, Shandong, CN;
Zhonghua Wu, Shandong, CN;
Chunxu Yang, Shandong, CN;
Yong Chen, Shandong, CN;
Zongfeng Zhao, Shandong, CN;
Chuanwei Zhao, Shandong, CN;
Rui Zhang, Shandong, CN;
Junjie Zhang, Shandong, CN;
CHINA PETROLEUM & CHEMICAL CORPORATION, Beijing, CN;
SINOPEC OILFIELD SERVICE CORPORATION, Beijing, CN;
SINOPEC SHENGLI PETROLEUM ENGINEERING CO., LTD, Shandong, CN;
DRILLING TECHNOLOGY RESEARCH INSTITUTE OF SINOPEC SHENGLI PETROLEUM ENGINEERING CO., LTD, Shandong, CN;
Abstract
A positioning and orientating apparatus for branch well, which has an orientating coupling shaft; a hydraulic cylinder having a guiding sleeve; a setting unit having an anchoring mechanism and a sealing mechanism; a setting actuation unit, having a sealing cylinder, a piston, and a force transmitting cylinder, wherein an upper end of the force transmitting cylinder is fixedly connected to the piston, a sealing chamber in communication with the central flow channel is formed within the sealing cylinder, and the piston is configured to drive the force transmitting cylinder to move downwards when a pressure of the drilling fluid reaches a first pressure; and a releasing unit having a pressure-bearing cylinder, an elastic claw, and a ball seat. The elastic claw is separated from the slot by lifting up the releasing unit when the pressure of the drilling fluid reaches a second pressure, thus completing a releasing procedure.