Method of treating a subterranean formation with an oil-based composition containing a polysaccharide-based water-superabsorbent material
US7395863B2 · kind B2 · utility
16Cited by
30References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 10, 2007 |
| Grant date | Jul 8, 2008 |
| Priority date | — |
| Expiry date | Dec 10, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/933
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A well treating composition containing a polysaccharide-based water-superabsorbent material has particularly applicability as a thermal insulating, fracturing or acid stimulation fluid. The water-superabsorbent material is capable of absorbing, at a minimum, its own weight. Particularly effective are biodegradable materials containing guar gum and carrageenan. The composition may further contain a crosslinking agent, brine and/or a viscosifying polymer or a gelling agent. As an oil-based fluid, the crosslinking agent is absorbed onto the water-superabsorbent material and serves to effectively delay crosslinking.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.