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:
Sep. 03, 2024
Filed:
Mar. 08, 2024
China University of Petroleum (East China), Dongying, CN;
Bangtang Yin, Dongying, CN;
Chi Zhang, Dongying, CN;
Baojiang Sun, Dongying, CN;
Zhiyuan Wang, Dongying, CN;
Xuliang Zhang, Dongying, CN;
Yonghai Gao, Dongying, CN;
Xiaohui Sun, Dongying, CN;
Wei Zhang, Dongying, CN;
CHINA UNIVERSITY OF PETROLEUM (EAST CHINA), Dongying, CN;
Abstract
An experimental device and method for co-existence of overflow and lost circulation in a fractured formation during drilling of a deviated well are provided. An inner cavity of an outer pipe is provided with an inner pipe to form a deviated casing. An upper side of the outer pipe is provided with a mixture outlet. A middle-lower side of the outer pipe is provided with a leakage port and two overflow ports. The gap width can be changed by adjusting a bolt and a support block to be compatible with different types of fracture models. A gas injection system includes an air compressor and a gas flowmeter. An upper port of a liquid injection system is connected to a joint arranged at upper ends of the inner pipe and outer pipe through a water pump, a liquid flowmeter and a liquid regulating valve.