Phospholipid lubricating agents in aqueous based drilling fluids
US7094738B2 · kind B2 · utility
12Cited by
1References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 9, 2004 |
| Grant date | Aug 22, 2006 |
| Priority date | — |
| Expiry date | Sep 9, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10M2223/10
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method of improving the lubricity of an aqueous based drilling fluid composed of an aqueous base fluid, and a weighting agent. The method involves the addition of an effective amount of a phospholipid to substantially reduce the coefficient of friction when compared to the fluid absent the phospholipids. Preferably the phospholipids have the structure:
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.