Method for drilling depleted sands with minimal drilling fluid loss
US6889780B2 · kind B2 · utility
11Cited by
28References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 31, 2002 |
| Grant date | May 10, 2005 |
| Priority date | — |
| Expiry date | Apr 22, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/506
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method is provided for reducing loss of drilling fluid and for stabilizing a wellbore during drilling through depleted sands in a subterranean formation comprising depleted sands. The method comprises introducing into said wellbore and into said depleted sands an aqueous fluid comprising silicate or siliconate and resilient graphitic carbon in an amount effective at substantially plugging pores in said depleted sands.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.