Inorganic deposit inhibitors, in particular in oil wells, particularly in high pressure / high temperature conditions
US7378477B2 · kind B2 · utility
4Cited by
6References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 12, 2004 |
| Grant date | May 27, 2008 |
| Priority date | — |
| Expiry date | Sep 22, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/528
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention concerns inorganic deposit inhibitors, and particularly of calcium carbonate and barium sulphate in oil wells. It also concerns certain copolymers particularly suitable for this application, particularly in high pressure/high temperature conditions (HP/HT).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.