Method for treating subterranean formations with temporarily thickening solutions
US4649999A · kind A · utility
21Cited by
6References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 24, 1985 |
| Grant date | Mar 17, 1987 |
| Priority date | — |
| Expiry date | Sep 24, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/935
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a thermally stable crosslinked gelled fluid for use in the treatment of subterranean formations penetrated by a well bore. The fluid composition comprises a pH adjusted aqueous liquid, a gelling agent comprising a selected modified cellulose ether, a crosslinking agent comprising a zirconium IV-containing compound and any additional additives that may be present. The fluid composition is thermally stable under shear at temperatures in excess of about 200.degree. F.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.