Composition and method for drilling high temperature reservoirs
US4088583A · kind A · utility
30Cited by
5References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 2, 1976 |
| Grant date | May 9, 1978 |
| Priority date | — |
| Expiry date | Dec 2, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/38
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Composition and method for drilling a well into a high temperature subterranean reservoir, such as one containing a geothermal fluid, wherein there is used an aqueous foam drilling fluid containing (1) water, (2) gas, (3) a foaming agent, (4) an erosion and corrosion inhibitor, (5) a water-soluble or water-dispersible carboxyalkyl cellulose ether or polyalkylene oxide polymer which both controls the fluid loss of the foam and toughens it, and, optionally, (6) a bit lubricant and/or (7) an anti-torqueing agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.