Prevention and remediation of petroleum reservoir souring and corrosion by treatment with virulent bacteriophage
US8585899B2 · kind B2 · utility
6Cited by
9References
8Claims
0Family size
Inventors
Key dates
| Filing date | Feb 24, 2012 |
| Grant date | Nov 19, 2013 |
| Priority date | — |
| Expiry date | May 7, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12N2795/00031
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
Petroleum reservoir souring caused by microbially induced production of hydrogen sulphide and other sulphur compounds and the attendant corrosion are remediated by isolating bacteriophage specific for the problematic bacteria (target bacteria) and adding an effective amount of such bacteriophage to water introduced into or resident in the reservoir to kill at least some of the target bacteria. Suitable virulent bacteriophage may be indigenous in the water or located in surrounding areas or taken from a known banked stock. Means of concentrating solutions of bacteriophage are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.