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. 19, 2018
Filed:
Mar. 22, 2017
China University of Petroleum (Beijing), Beijing, CN;
Guancheng Jiang, Beijing, CN;
Shuanglei Peng, Beijing, CN;
Yinbo He, Beijing, CN;
Deli Gao, Beijing, CN;
Lili Yang, Beijing, CN;
Fan Liu, Beijing, CN;
Xinliang Li, Beijing, CN;
Zhengqiang Deng, Beijing, CN;
Guangchang Ma, Beijing, CN;
Li Zhao, Beijing, CN;
Haifang Sun, Beijing, CN;
Liexiang Han, Beijing, CN;
China University of Petroleum (Beijing), Beijing, CN;
Abstract
The present invention relates to the well drilling field in petroleum industry, in particular to a drilling fluid additive composition that contains a lubricant, an emulsifier, and a rheological modifier, wherein, the lubricant contains: graphite oxide and a biquaternary ammonium salt compound in which the cation part is represented by formula (1); the emulsifier is one or more of compounds represented by formula (I); the rheological modifier is a dimer acid-organic amine copolymer comprising structural units from dimer acid, structural units from alkylamine and structural units from arylamine. The present invention further provides an oil-based drilling fluid containing the composition and a use thereof. The oil-based drilling fluid containing the composition provided in the present invention obtains a lower lubrication coefficient, and favorable rheological property and thermostability, and is suitable for use in operation at a high temperature