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:
Jul. 01, 2025
Filed:
Apr. 21, 2025
Southwest Petroleum University, Chengdu, CN;
Tianfu Yongxing Laboratory, Chengdu, CN;
Jinzhou Zhao, Chengdu, CN;
Daijun Du, Chengdu, CN;
Wanfen Pu, Chengdu, CN;
Zezhou Fang, Chengdu, CN;
Bo Zhou, Chengdu, CN;
Chao Shen, Chengdu, CN;
Zijia Liao, Chengdu, CN;
Jintao Li, Chengdu, CN;
Ying Xiong, Chengdu, CN;
Rui Jiang, Chengdu, CN;
Southwest Petroleum University, Chengdu, CN;
TIANFU YONGXING LABORATORY, Chengdu, CN;
Abstract
The present invention discloses a supercritical CO2 thickener for shale gas reservoir based on hollow mesoporous silica nanoparticles and a preparation method thereof, and relates to the technical field of oil and gas field development. The preparation method of the thickener includes: reacting a monomer consisting of fluoroacrylate, styrene and vinyl acetate in a molar ratio of 3-5:1-2:1-2 with 2%-5% of a total weight of hollow mesoporous silica nanoparticles with carbon-carbon double bonds under the action of an initiator to obtain the thickener. The preparation method of the present invention does not involve the addition of organic solvents during the reaction process and thus does not cause harm to the human body. The thickener of the present invention has good CO2 viscosity-increasing effect and good sand carrying performance, and can effectively improve the fracturing effect.