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. 26, 2022
Filed:
Oct. 26, 2021
Southwest Petroleum University, Chengdu, CN;
Yang Bai, Chengdu, CN;
Lingfeng Wu, Chengdu, CN;
Pingya Luo, Chengdu, CN;
Jinsheng Sun, Qingdao Shandong, CN;
Haibo Liang, Chengdu, CN;
Wen Xu, Chengdu, CN;
Kesheng Rong, Chengdu, CN;
Jing Zhang, Chengdu, CN;
Gang Xie, Chengdu, CN;
Jiading Deng, Chengdu, CN;
Southwest Petroleum University, Chengdu, CN;
Abstract
The present discloses a pressure-bearing plugging composition comprising 1-7 parts by weight bentonite, 0.1-1.5 parts by weight deformation material, 8-18 parts by weight filling material and 4-12 parts by weight modified bridging material, based on 100 parts by weight of water; the modified bridging material comprises a core, and a coating layer coated on an outer surface of the core, and a paraffin layer disposed between the core and the coating layer; the core is made of a water-absorbing material, and the coating layer is formed by bonding rigid particles and an adhesive.