Methods of fracturing formations using quaternary amine salts as viscosifiers
US7287593B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 21, 2005 |
| Grant date | Oct 30, 2007 |
| Priority date | — |
| Expiry date | Dec 31, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/90
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Treatment methods including preparation of an aqueous treatment fluid composition composed of a carboxy modified polymer, a crosslinking agent, and a viscosifying quaternary amine salt, and subsequently introducing the composition into a the formation to treat. The treatment method is particularly useful for fracturing a subterranean formation. The polymer and crosslinker may be premixed and injected into a wellbore, then mixed therein with the quaternary amine salt to treat the formation. In another aspect, the polymer, crosslinker, and quaternary amine salt are mixed, injected into a wellbore, and introduced in the formation for treatment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.