Compositions for treating subterranean zones penetrated by well bores
US7087556B2 · kind B2 · utility
10Cited by
62References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 15, 2002 |
| Grant date | Aug 8, 2006 |
| Priority date | — |
| Expiry date | Jul 27, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S524/922
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention provides compositions of treating subterranean zones penetrated by well bores in primary well cementing operations, well completion operations, production stimulation treatments and the like. The invention includes aqueous well treating fluids comprised of water and a water soluble polymer complex fluid loss control additive. Preferred polymer complexes comprise water-soluble polymers made in the presence of hydroxyethylcellulose.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.