pH-responsive nano-gel plugging material, and preparation method therefor and use thereof
US12146095B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jul 18, 2023 |
| Grant date | Nov 19, 2024 |
| Priority date | — |
| Expiry date | Jul 18, 2043 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2208/10
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.