Method and materials to convert a drilling mud into a solid gel based lost circulation material
US10851279B2 · kind B2 · utility
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4Claims
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Key dates
| Filing date | Mar 6, 2020 |
| Grant date | Dec 1, 2020 |
| Priority date | — |
| Expiry date | Mar 6, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2208/10
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A convertible composition comprising a nanosilica drilling fluid, the nanosilica drilling fluid comprising an aqueous based drilling mud, where the aqueous based drilling mud comprises water, and an alkaline nanosilica dispersion, where the alkaline nanosilica dispersion comprises nanosilica; and a chemical activator, the chemical activator operable to hydrolyze in the presence of water to produce an acid, where a weight ratio of the alkaline nanosilica dispersion to the chemical activator is between 1 to 0.001 and 1 to 0.25.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.