Shale inhibitors used in the water-based fluid for shale formation
US10787602B2 · kind B2 · utility
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19Claims
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Key dates
| Filing date | Jun 15, 2018 |
| Grant date | Sep 29, 2020 |
| Priority date | — |
| Expiry date | Dec 13, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2208/12
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A shale inhibitor to improve the application of water-based drilling fluid in the shale formation rock is provided. An embodiment of the shale inhibitor is the reaction product of an amine, such as triethanolamine, and epichlorohydrin in water solution. Another embodiment of the shale inhibitor is the reaction product of triethanolamine, epichlorohydrin, and hypophosphorous acid. It is highly effective and has a better performance than most commercial products on preventing the disintegration and swelling of the shale formation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.