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:
Oct. 13, 2020
Filed:
Jun. 22, 2018
China University of Petroleum-beijing, Beijing, CN;
Beijing Shida Rongzhi Science and Technology Limited Company, Beijing, CN;
Xiang'an Yue, Beijing, CN;
Weiqing An, Beijing, CN;
Xuegang Feng, Beijing, CN;
Lijuan Zhang, Beijing, CN;
Jirui Zou, Beijing, CN;
Xin Fang, Beijing, CN;
Youjun Fu, Beijing, CN;
Wei Fang, Beijing, CN;
Junbin Zhang, Beijing, CN;
Wenhao Tian, Beijing, CN;
Jueshun Zhao, Beijing, CN;
Bin Kong, Beijing, CN;
Shengxu Zhao, Beijing, CN;
CHINA UNIVERSITY OF PETROLEUM-BEIJING, Beijing, CN;
BEIJING SHIDA RONGZHI SCI. AND TECH. LTD. CO., Beijing, CN;
Abstract
The present application provides an apparatus and a method for measuring apparent permeability of a tight rock core, the apparatus comprises: a rock core holder, a first high-pressure injection pump, a second high-pressure injection pump, a micro-differential pressure meter, a micro-flow meter, a first pressure control unit, a second pressure control unit, a first valve, a second valve, a third valve, and a fourth valve; the first pressure control unit comprises: a first pressure-resistant piston container and a second pressure-resistant piston container, both of which are divided into an upper cavity and a lower cavity by a piston, the upper cavities of the first pressure-resistant piston container and the second pressure-resistant piston container are filled with gases and communicate with each other, and the lower cavity of the first pressure-resistant piston container is filled with pump pressure-transmission liquids, and the lower cavity of the second pressure-resistant piston container is filled with experimental fluids.