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:
Sep. 27, 2022
Filed:
May. 11, 2021
China University of Petroleum (Beijing), Beijing, CN;
Guancheng Jiang, Beijing, CN;
Yinbo He, Beijing, CN;
Lili Yang, Beijing, CN;
Tengfei Dong, Beijing, CN;
Xiaohu Quan, Beijing, CN;
Kai Wang, Beijing, CN;
Chunyao Peng, Beijing, CN;
Xuwu Luo, Karamay, CN;
Bin Tan, Beijing, CN;
Jun Cai, Beijing, CN;
Xing Liang, Beijing, CN;
Zhiliang You, Beijing, CN;
Yong Wang, Beijing, CN;
China University of Petroleum (Beijing), Beijing, CN;
Abstract
The invention relates to the field of drilling fluid, in particular to a saturated salt water drilling fluid of salt response type intelligent polymer and preparation method thereof. The drilling fluid contains two or more of the following components stored in admixture or separately: bentonite, NaOH, KCl, calcium carbonate, barite, NaCl, supramolecular fluid loss additive, supramolecular shear-enhancing agent, plugging agent, coating agent and water. The drilling fluid provided by the invention has the characteristics of salt response and self-assembly, can keep rheological properties such as rapid recovery of the sheared structure, low extreme high shear rate viscosity, good shear dilution property and the like in a high-salt environment, has good fluid loss reduction performance, reservoir protection performance and debris dispersion inhibition performance, and has good temperature resistance and pollution resistance performance.