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:
Jun. 04, 2019
Filed:
Jan. 25, 2019
China University of Petroleum (Beijing), Beijing, CN;
Guancheng Jiang, Beijing, CN;
Xiaoxiao Ni, Beijing, CN;
Lili Yang, Beijing, CN;
Guangchang Ma, Beijing, CN;
Chunyao Peng, Beijing, CN;
Deli Gao, Beijing, CN;
Xi Wang, Beijing, CN;
Jinsheng Sun, Qingdao, CN;
Xiaolin Pu, Chengdu, CN;
Kai Wang, Beijing, CN;
Zhengqiang Deng, Beijing, CN;
Yang Bai, Chengdu, CN;
Yinbo He, Beijing, CN;
Xinliang Li, Beijing, CN;
Abstract
A super-amphiphobic composite material and use of the same as an inhibitor, lubricant, reservoir protectant, and accelerator in water-based drilling fluids. A method for preparing the amphiphobic composite material includes: performing a first mixing of nano-titanium dioxide and nano-silicon dioxide in an alcohol-water mixed solvent under an alkaline condition, to obtain a dispersion of nano-titanium dioxide and nano-silicon dioxide; then introducing a fluorosilicone-containing coupler into the dispersion of nano-titanium dioxide and nano-silicon dioxide and performing a second mixing. The amphiphobic composite material may be applied in water-based drilling fluids. It has an effect of strongly inhibiting hydrated swelling and disintegration, low toxicity and high compatibility; can solve problems such as well wall instability, blockage of drilling tools, and reservoir damage, etc.; and has long-term practical value in complicated wells such as extra-deep wells, horizontal wells and extended reach wells, and in mud-bearing shale formations.