Supercritical pentane as an extractant for oil shale
US8485257B2 · kind B2 · utility
4Cited by
13References
20Claims
0Family size
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Key dates
| Filing date | Aug 6, 2009 |
| Grant date | Jul 16, 2013 |
| Priority date | — |
| Expiry date | Nov 24, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/54
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Methods of extracting a hydrocarbon-based product from subsurface (oil) shale formations are provided. These methods rely on the use of an extraction fluid comprising pentane for facilitating the production of a mobile hydrocarbon-based product when the pentane contacts hydrocarbons in subsurface shale. The contacting process, and the subsequent process of recovering the mobile hydrocarbon-based product, is further enhanced by the methods of fracturing and/or rubblizing portions of the shale formation, so as to enhance their fluid permeability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.