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. 10, 2019
Filed:
Jan. 14, 2019
Applicant:
China University of Petroleum (East China), Qingdao, CN;
Inventors:
Baojiang Sun, Qingdao, CN;
Xueqing Teng, Korla, CN;
Yaoming Zhang, Korla, CN;
Zhiyuan Wang, Qingdao, CN;
Hongtao Liu, Korla, CN;
Jianbo Zhang, Qingdao, CN;
Youqiang Liao, Qingdao, CN;
Assignee:
China University of Petroleum (East China), Qingdao, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 33/138 (2006.01); E21B 47/06 (2012.01);
U.S. Cl.
CPC ...
E21B 33/138 (2013.01); E21B 47/06 (2013.01);
Abstract
The well killing device comprises: a first path; a flow regulating device; a pressure detector and a controlling device. The controlling device may control the discharge amount of the killing fluid in different killing stages according to the gas-fluid two-phase flow theory, the pressure of the killing fluid at the wellhead, and the rising speed of the drilling column.