Low residue well treatment fluids and methods of use
US6810959B1 · kind B1 · utility
40Cited by
23References
23Claims
0Family size
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Key dates
| Filing date | Mar 22, 2002 |
| Grant date | Nov 2, 2004 |
| Priority date | — |
| Expiry date | Sep 1, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/922
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A low residue well treatment fluid comprises: an aqueous solvent; a gelling agent comprising one or modified polysaccharides, the modified polysaccharides having hydrophilic groups; and a crosslinking composition. The fluid may optionally further comprise a gel breaker, a buffer and/or a proppant. The fluids generate no or minimal residue upon being broken, and are particularly useful in well fracturing operations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.