Lubrication for drilling fluid
US10138406B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 2, 2017 |
| Grant date | Nov 27, 2018 |
| Priority date | — |
| Expiry date | Mar 2, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2208/34
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A drilling fluid lubricant includes a crude tall oil product and a derivative of ricinoleic acid that is at least partially transesterified product. A modified drilling fluid includes a water-based drilling fluid in a range of from about 95 vol. % to about 99 vol. % and a drilling fluid lubricant in a range of from about 0.1 vol. % to about 5 vol. % of the fluid. The drilling fluid lubricant includes a crude tall oil product selected from the group consisting of crude tall oil, distilled tall oil, acid tall oil, fractionated tall oil, and combinations thereof. The drilling fluid lubricant also includes at least partially transesterified derivative of ricinoleic acid product. The product comprises at least partially transesterified derivatives of ricinoleic acid that combined are in a range of from about 88 mole % to about 99 mole % of the product.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.