Method of treating oil or gas well with biodegradable emulsion
US7392845B2 · kind B2 · utility
19Cited by
9References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 23, 2006 |
| Grant date | Jul 1, 2008 |
| Priority date | — |
| Expiry date | Sep 14, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/929
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A biodegradable water-in-synthetic oil base emulsion, effective in the removal of filter cakes, consists of an external phase of a surfactant emulsified in a paraffinic base oil. The emulsion is particularly effective in breaking-down the interfacial rheological properties of oil base mud and synthetic oil base mud filter cakes and acts as a demulsifier to break the water-in-oil emulsions present in such oil base and synthetic oil base muds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.