Non-hydrocarbon invert emulsions for use in well drilling operations
US5057234A · kind A · utility
36Cited by
22References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 11, 1990 |
| Grant date | Oct 15, 1991 |
| Priority date | — |
| Expiry date | Jun 11, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/34
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Brine-in-glycol emulsions are shown for use as well working fluids. The fluids have a glycol external phase and a brine internal phase. The separate phases are emulsified to create an emulsion and weighted with traditional weighting agents. The external phase is soluble or dispersible in sea water when diluted upon discharge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.