Environment friendly base fluid to replace the toxic mineral oil-based base fluids
US8563482B2 · kind B2 · utility
16Cited by
9References
25Claims
0Family size
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Inventor
Key dates
| Filing date | Sep 22, 2010 |
| Grant date | Oct 22, 2013 |
| Priority date | — |
| Expiry date | Jun 11, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/82
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Processes for producing alkyl esters useful as base fluids in oil-based mud compositions. The alkyl esters are produced from raw material waste oil that include vegetable oil. The raw material waste oil can be obtained from the food industry, such as from food chains. The raw material waste oil is purified by removing impurities from it. The raw material waste oil is then esterified with an alcohol in the presence of a catalyst. The resulting alkyl ester products are then separated from triglycerides. The alkyl ester products are then washed and dried.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.