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. 02, 2025
Filed:
Jun. 10, 2021
China Petroleum & Chemical Corporation, Beijing, CN;
Sinopec Southwest Oil & Gas Company, Sichuan, CN;
Wei Lei, Sichuan, CN;
Zhimin Hou, Sichuan, CN;
Haifeng Dong, Sichuan, CN;
Yancheng Yan, Sichuan, CN;
Lin Lan, Sichuan, CN;
Xingwen Wang, Sichuan, CN;
Xiaogang Wang, Sichuan, CN;
Zhiguo Qiao, Sichuan, CN;
Zhou Fang, Sichuan, CN;
CHINA PETROLEUM & CHEMICAL CORPORATION, Beijing, CN;
SINOPEC SOUTHWEST OIL & GAS COMPANY, Sichuan, CN;
Abstract
A wellbore staged operation method includes running, after a first well drifting operation is performed on a wellbore, a pipe string () in the wellbore, wherein the pipe string () includes, along a direction from bottom to top, a floating hoop (), a plug seat (), a toe-end sliding sleeve (), and a fracturing sliding sleeve (); performing a cementing operation, wherein cement slurry pumped into an inner chamber of the pipe string () enters an annulus between the pipe string and the wellbore through the plug seat () and the floating hoop () to form a cement sheath, the cement sheath isolating the toe-end sliding sleeve () from the fracturing sliding sleeve (); performing a second drifting operation to ensure the toe-end sliding sleeve () of the pipe string () exposed; performing a pressure test for the pipe string; and performing staged fracturing constructions.