Process for recovering heavy oil utilizing one or more membranes
US7909098B2 · kind B2 · utility
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25Claims
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Key dates
| Filing date | Jun 19, 2009 |
| Grant date | Mar 22, 2011 |
| Priority date | — |
| Expiry date | Jun 19, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2103/10
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An oil recovery process utilizes one or more membranes to remove silica and/or oil from produced water. In one method, the process includes separating oil from produced water and precipitating silica. The produced water having the precipitated silica is directed to a membrane, such as a ceramic membrane, which removes the precipitated silica from the produced water. In some cases, residual oil is present and is also removed by the membrane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.