Environmentally friendly water based drilling fluids
US5707940A · kind A · utility
76Cited by
28References
41Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 7, 1995 |
| Grant date | Jan 13, 1998 |
| Priority date | — |
| Expiry date | Jun 7, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K23/34
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An oil-in-water emulsion composition is disclosed which comprises a mixture of brine and; PA1 (A) at least one natural oil or synthetic triglyceride of the formula ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 are independently saturated or unsaturated aliphatic groups that contain from about 7 to about 23 carbon atoms; PA1 (B) at least one alcohol, R.sup.4 OH wherein R.sup.4 is an aliphatic group containing from 1 up to about 18 carbon atoms; PA1 (C) at least one emulsifier; and PA1 (D) at least one sulfurized composition wherein (B), (C) and (D) are soluble and reside within (A).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.