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:
Jul. 02, 2024
Filed:
Dec. 03, 2019
China Oilfield Services Limited, Tianjin, CN;
China National Offshore Oil Corporation, Beijing, CN;
Zhibin Tian, Hebei, CN;
Yongren Feng, Hebei, CN;
Tao Lu, Hebei, CN;
Lin Huang, Hebei, CN;
Tiemin Liu, Hebei, CN;
Zanqing Wei, Hebei, CN;
Yong Jiang, Hebei, CN;
Xiaoqiang Du, Hebei, CN;
Liping Liu, Hebei, CN;
Xiaodong Chu, Hebei, CN;
China Oilfield Services Limited, Tianjin, CN;
China National Offshore Oil Corporation, Beijing, CN;
Abstract
A hydraulic power system for a downhole device, including a first motor, a first hydraulic pump, a second hydraulic pump, a first main oil circuit, a second main oil circuit, a switching control module and a first execution module. The first motor has a first output shaft which drives the first hydraulic pump and has an oil outlet connected to an input end of the first main oil circuit and a second output shaft which drives the second hydraulic pump and has an oil outlet connected to an input end of the second main oil circuit; the first execution module is connected to an output end of the first main oil circuit; displacement of the first hydraulic pump is smaller than that of the second hydraulic pump; and the switching control module is connected between the first main oil circuit and the second main oil circuit.