Treating shale and clay in hydrocarbon producing formations with combinations of guar and potassium formate
US6454005B1 · kind B1 · utility
6Cited by
15References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 9, 2001 |
| Grant date | Sep 24, 2002 |
| Priority date | — |
| Expiry date | Mar 9, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/665
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Clay is stabilized in the drilling of wells for hydrocarbon production by the addition to the drilling fluid of potassium formate together with an amount of guar effective to inhibit clay and shale swelling and sloughing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.