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:
Oct. 15, 2019
Filed:
Apr. 23, 2019
China University of Petroleum (Beijing), Beijing, CN;
Guancheng Jiang, Beijing, CN;
Xiaoxiao Ni, Beijing, CN;
Lili Yang, Beijing, CN;
Yinbo He, Beijing, CN;
Xiaohu Quan, Beijing, CN;
Zhong Li, Beijing, CN;
Xiaoyong Wang, Beijing, CN;
Yongbin Guo, Beijing, CN;
Fabin Xu, Beijing, CN;
Zhengqiang Deng, Beijing, CN;
Xi Wang, Beijing, CN;
Deli Gao, Beijing, CN;
Kai Wang, Beijing, CN;
Xuwu Luo, Beijing, CN;
Chunyao Peng, Beijing, CN;
CHINA UNIVERSITY OF PETROLEUM (BEIJING), Beijing, CN;
Abstract
The invention relates to the field of petroleum drilling fluids, and discloses a super-amphiphobic strongly self-cleaning high-performance water-based drilling fluid comprising polymeric super-amphiphobic agent and a drilling method. The polymeric super-amphiphobic agent comprises structural units A derived from acrylamide, structural units B derived from methyl methacrylate, structural units C derived from butyl acrylate, structural units D derived from a compound represented by the following formula (1), structural units E derived from a silane coupler, and nano-titania; wherein the nano-titania is bonded to the polymeric super-amphiphobic agent via the structural unit E, and the silane coupler is a silane coupler having double bonds; R is a C3-C8 perfluoroalkyl group. A water-based drilling fluid additive prepared from the polymeric super-amphiphobic agent in the present invention has excellent wettability, inhibition, lubrication, reservoir protection, and rheology and fluid loss properties.