Well treatment fluid and methods with oxidized polysaccharide-based polymers
US6981552B2 · kind B2 · utility
96Cited by
14References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 21, 2003 |
| Grant date | Jan 3, 2006 |
| Priority date | — |
| Expiry date | Nov 22, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/887
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention provides a well treatment fluid containing water, a amine-based polymer, and an oxidized polysaccharide-based polymer. The oxidized polysaccharide-based polymer is able to crosslink with the amine-based polymer and produce a gel having a viscosity of greater than about 20 cp, measured at a pH of about 4 to about 7 and at STP. The present invention also provides a method of treating a subterranean formation penetrated by a wellbore comprising the steps of: (a) forming the well treatment fluid, and (b) contacting the subterranean formation with the fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.