Invert biodegradable n-alkane(s) wellbore fluid containing less than 10 percent by weight of cycloparaffing isoparaffing and aromatic compounds, and method of drilling with such fluid
US5846913A · kind A · utility
28Cited by
7References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 17, 1997 |
| Grant date | Dec 8, 1998 |
| Priority date | — |
| Expiry date | Mar 17, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/91
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention concerns wellbore fluids suitable for use in the oil and gas exploration and production industries and embraces fluids used for drilling, completion, workover or packing of wellbores. The invention is especially concerned with biodegradable wellbore fluids the liquid phase of which consists of an oil, or of water-in-oil "invert" emulsions, where the oil phase comprises n-alkanes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.