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:
Jun. 17, 2025
Filed:
Dec. 15, 2024
China University of Petroleum (East China), Dongying, CN;
Bangtang Yin, Dongying, CN;
Kai Feng, Dongying, CN;
Baojiang Sun, Dongying, CN;
Zhiyuan Wang, Dongying, CN;
Yonghai Gao, Dongying, CN;
Hao Li, Dongying, CN;
Jianbo Zhang, Dongying, CN;
Guizhen Xin, Dongying, CN;
CHINA UNIVERSITY OF PETROLEUM (EAST CHINA), Dongying, CN;
Abstract
A well-killing system for ultra-deep well drilling with co-existence of overflow and lost circulation is provided. An upper part of a wellhead blowout preventer is connected to a first mud pump and a lost circulation material mud tank through a pipeline, a first three-way control valve, and a second three-way control valve. A lower port of the second three-way control valve is connected to a second mud pump and a mud pit. A lower port of the first three-way control valve is connected to a first well-killing fluid tank and a second well-killing fluid tank. A gas-liquid separation tank is connected to a side of a wellhead device. A first pressure sensor and a first flowmeter are provided on a left port of the first three-way control valve. A second pressure sensor and a second flowmeter are provided at a left port of a third three-way control valve.