Method of forming temporary blocking gel containing guar derivative
US7347265B2 · kind B2 · utility
10Cited by
13References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 26, 2004 |
| Grant date | Mar 25, 2008 |
| Priority date | — |
| Expiry date | Oct 22, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/514
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A high temperature blocking gel contains a blend of an aqueous fluid and carboxymethyl guar and a crosslinking agent. The gel exhibits excellent hydration capability in brines and positive viscosity generation and controls fluid loss from an oil well during drilling, completion and/or workover operations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.