Direct emulsions and methods of use
US11441367B2 · kind B2 · utility
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15References
19Claims
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Key dates
| Filing date | Apr 12, 2018 |
| Grant date | Sep 13, 2022 |
| Priority date | — |
| Expiry date | Apr 12, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/265
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method comprising drilling through a plurality of differing zones of a subterranean formation using a drilling fluid comprising a non-oleaginous continuous phase, an oleaginous discontinuous phase and at least a first salt dissolved into the non-oleaginous continuous phase. The amount of the at least first salt dissolved into the non-oleaginous continuous phase is maintained such that a density of the drilling fluid varies by no more than 10% while drilling through the plurality of zones.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.