Drilling fluids comprising hydroxylated polymers
US8252728B2 · kind B2 · utility
36Cited by
10References
11Claims
0Family size
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Key dates
| Filing date | Dec 14, 2011 |
| Grant date | Aug 28, 2012 |
| Priority date | — |
| Expiry date | Dec 14, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2208/34
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Drilling fluids comprising polymers containing hydroxylated structural units are useful as accretion inhibiting agents, and/or as fluid rheology controlling agents, and/or as filtrate reducing agents, and/or as lubricating agents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.