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:
Nov. 25, 2025
Filed:
Jun. 03, 2025
Southwest Petroleum University, Chengdu, CN;
Ruihan Zhang, Chengdu, CN;
Feng Ge, Chengdu, CN;
Jianfa Wu, Chengdu, CN;
Jian Zheng, Chengdu, CN;
Hongxi Li, Chengdu, CN;
Qian Li, Chengdu, CN;
Yulong Zhao, Chengdu, CN;
Tao Zhang, Chengdu, CN;
Bo Hu, Chengdu, CN;
Liehui Zhang, Chengdu, CN;
Southwest Petroleum University, Chengdu, CN;
Abstract
Disclosed are a device and method for determining gas diffusion coefficient in rocks. The device includes: a core holder, a sampling mechanism, a gas analyzer, a gas source and a pressure gauge. A middle part of the core holder holds a rock sample, two sampling mechanisms are symmetrically arranged at two ends of the rock sample, each sampling mechanism includes a first blind tube, a cylinder, a second blind tube and a sampling cavity, an open end of the first blind tube faces the rock sample and is in sealing connection with an end surface of the rock sample to form a diffusion chamber. A single sampling cavity is isolated from the diffusion chamber, and the pressure of the diffusion chamber is not affected, so that undisturbed sampling is achieved, the influence on the pressure of the diffusion chamber is reduced, and the accuracy of the determination results is improved.