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. 01, 2022
Filed:
Nov. 01, 2021
Southwest Petroleum University, Sichuan, CN;
Liangliang Ding, Sichuan, CN;
Wenkang Chen, Sichuan, CN;
Hongtao Liu, Sichuan, CN;
Qiang Zhang, Sichuan, CN;
SOUTHWEST PETROLEUM UNIVERSITY, Chengdu, CN;
Abstract
Disclosed herein is a reservoir isolation valve for secondary completion, which includes a shell assembly, a sleeve assembly arranged in the shell assembly, a reset spring arranged between the shell assembly and the sleeve assembly, a movable tube, an inner limit tube, an outer limit tube, an outer bearing socket, an inner bearing socket, a thrust bearing, a ball valve arranged in the sleeve assembly, a stepped shaft fixed on the ball valve, a transmission mechanism configured for connecting the movable tube to the stepped shaft and allowing the stepped shaft to rotate and a startup part.