High temperature-resistant and high oil-absorption resin particle plugging agent suitable for oil-based drilling fluid and its preparation method
US11384275B2 · kind B2 · utility
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Key dates
| Filing date | Jan 18, 2021 |
| Grant date | Jul 12, 2022 |
| Priority date | — |
| Expiry date | Jan 18, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2208/10
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A high temperature-resistant and high oil-absorption resin particle plugging agent suitable for oil-based drilling fluid and its preparation method is prepared from raw materials in parts by mass as follows: 15-30 parts of reaction monomers, 5-12 parts of linear high polymers, 0.1-1.5 parts of cross-linking agents, 0.1-0.5 parts of initiators, 1-3 parts of modified starches, 1-5 parts of filler particles and 1-5 parts of dispersing agents; it has high oil absorption capacity under a high-temperature condition and high toughness after oil-absorbing expansion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.