Composition and method for drilling formations containing geothermal fluid
US4013568A · kind A · utility
16Cited by
7References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 11, 1975 |
| Grant date | Mar 22, 1977 |
| Priority date | — |
| Expiry date | Dec 11, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/91
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A composition and method for drilling a well into a subterranean formation containing a geothermal fluid utilizing a gas-containing aqueous drilling fluid containing both lignite and a salt of a high molecular weight acrylic polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.