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:
Nov. 19, 2024
Filed:
Jul. 18, 2023
China National Petroleum Corporation, Beijing, CN;
Cnpc Engineering Technology R&d Company Limited, Beijing, CN;
Jie Zhang, Beijing, CN;
Rongchao Cheng, Beijing, CN;
Jie Feng, Beijing, CN;
Zhiliang Zhao, Beijing, CN;
Shuangwei Wang, Beijing, CN;
Long Li, Beijing, CN;
Tianyi Zhang, Beijing, CN;
CHINA NATIONAL PETROLEUM CORPORATION, Beijing, CN;
CNPC ENGINEERING TECHNOLOGY R & D COMPANY LIMITED, Beting, CN;
Abstract
Provided in the present invention are a pH-responsive nano-gel plugging material, and a preparation method therefor and the use thereof. The pH-responsive nano-gel plugging material comprises the following raw materials in parts by mass: 50-70 parts of water, 2-3 parts of an emulsifier, 25-35 parts of an acrylic terpolymer, 10-15 parts of a polyalcohol compound, and 10-20 parts of a vinyl pyridine compound. The pH-responsive nano-gel plugging material can be applied to the plugging of Ordovician carbonate rock fractures and micro-karst cave strata, and can automatically identify Ordovician carbonate rock fractures and micro-karst cave leaking layers and realize effective blocking thereof.