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:
May. 24, 2016
Filed:
Jul. 20, 2014
Sichuan University, Chengdu, CN;
Feng Gao, Chengdu, CN;
Heping Xie, Chengdu, CN;
Fubao Zhou, Chengdu, CN;
Yang Ju, Chengdu, CN;
Lingzhi Xie, Chengdu, CN;
Yingke Liu, Chengdu, CN;
Yanan Gao, Chengdu, CN;
Jianfeng Liu, Chengdu, CN;
Ru Zhang, Chengdu, CN;
SICHUAN UNIVERSITY, Chengdu, CN;
Abstract
A pneumatic fracturing method for exploiting shale gas, the method including: 1) applying a compressed gas for a first period of time at a first pressure to a shale formation; 2) applying the compressed gas for a second period of time at a second pressure to the shale formation; and 3) repeating steps 1) and 2) to produce fissures in the shale formation. A temperature of the compressed gas is at least 80° C. A maximum pressure of the compressed gas is at least 25 megapascal, and a minimum pressure of the compressed gas is between ¼ and ⅓ of the maximum pressure.