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. 27, 2022
Filed:
Oct. 19, 2021
Applicant:
Southwest Petroleum University, Chengdu, CN;
Inventors:
Yang Bai, Chengdu, CN;
Lingfeng Wu, Chengdu, CN;
Pingya Luo, Chengdu, CN;
Haibo Liang, Chengdu, CN;
Wen Xu, Chengdu, CN;
Wenzhe Li, Chengdu, CN;
Feng Dai, Chengdu, CN;
Guancheng Jiang, Chengdu, CN;
Gang Xie, Chengdu, CN;
Jiading Deng, Chengdu, CN;
Assignee:
Southwest Petroleum University, Chengdu, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09K 8/68 (2006.01); C09K 8/42 (2006.01);
U.S. Cl.
CPC ...
C09K 8/426 (2013.01);
Abstract
The present disclosure a pressure-bearing plugging agent, comprises a core, a first coating layer and a second coating layer which are sequentially coated on an outer surface of the core, wherein the core is made of a water-absorbing swellable material, the first coating layer is a paraffin layer, and the second coating layer is obtained by cementing the rigid particles with an adhesive.