Methods and compositions for suppressing bacterial growth in a subterranean environment
US10030493B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 24, 2014 |
| Grant date | Jul 24, 2018 |
| Priority date | — |
| Expiry date | Sep 24, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2208/10
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
It is often desirable to suppress the growth of bacteria when conducting oilfield operations, particularly in the subterranean environment. Methods for suppressing growth of bacteria can comprise: providing a plurality of biocidal proppant particulates, the biocidal proppant particulates comprising a biocidal coating upon proppant particulates, the biocidal coating comprising a plurality of biocidal nanoparticles dispersed within a binder material; introducing the biocidal proppant particulates into a wellbore penetrating a subterranean formation; localizing at least a portion of the biocidal proppant particulates within the subterranean formation; and suppressing growth of one or more types of bacteria with the biocidal nanoparticles in the wellbore or in the subterranean formation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.