High performance water based fluid
US11274239B2 · kind B2 · utility
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17Claims
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Key dates
| Filing date | Jul 31, 2015 |
| Grant date | Mar 15, 2022 |
| Priority date | — |
| Expiry date | Jun 14, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2208/12
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A fluid may include an aqueous based continuous phase, a pH adjusting additive, wherein the pH adjusting additive is formic acid, and a clay hydration suppressant agent having the formula H2NCH(CH3)CH2(OCH(CH3)CH2)xNH2, wherein x is a value less than 15.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.