Organoclay compositions for drilling fluids useful to provide substantially constant rheology profiles to such fluids over a wide temperature range
US9534162B2 · kind B2 · utility
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Key dates
| Filing date | Jul 11, 2014 |
| Grant date | Jan 3, 2017 |
| Priority date | — |
| Expiry date | Aug 21, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/32
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method of providing a substantially constant rheological profile of an oil-based drilling fluid over a temperature range of about 120° F. to about 40° F., comprising adding drilling fluid additive to the drilling fluid, wherein the drilling fluid additive comprises an organoclay composition comprising: organoclay compositions where a phyllosilicate clay is exchanged with quaternary ammonium ions having a formula of [NR1R2R3R4]+ wherein at least one of R1, R2 and R3 is a mixture of branched alkyl groups.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.