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:
Jan. 14, 2020
Filed:
Jul. 26, 2019
Southwest Petroleum University, Chengdu, Sichuan Province, CN;
Yang Bai, Chengdu, CN;
Cheng Li, Chengdu, CN;
Guojun Li, Chengdu, CN;
Yan Cheng, Chengdu, CN;
Hao Zhang, Chengdu, CN;
Guancheng Jiang, Beijing, CN;
Jinsheng Sun, Shandong, CN;
Jingping Liu, Shandong, CN;
Southwest Petroleum University, Chengdu, Sichuan Province, CN;
Abstract
The invention relates to the field of drilling fluid, and discloses a strong plugging drilling fluid composition and preparation method thereof, and use thereof. The strong plugging drilling fluid composition comprises water, bentonite, NaCO, a shale inhibitor, a filtrate reducer, a viscosity reducer, an anti-collapse agent, a nanometer plugging agent, a lubricant and a weighting agent. The shale inhibitor is modified asphalt, the anti-collapse agent is ultra-fine calcium carbonate, and the nanometer plugging agent is polyethylene glycol surface-modified nano-graphene.