Method of extracting bitumen from oil sands with a propylene oxide capped glycol
US10138719B2 · kind B2 · utility
1Cited by
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7Claims
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Key dates
| Filing date | Mar 20, 2015 |
| Grant date | Nov 27, 2018 |
| Priority date | — |
| Expiry date | Sep 6, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G2300/4037
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Oil sands may be surface mined and transported to a treatment area or may be treated directly by means of an in situ process of oil sand deposits that are located too deep for strip mining. A bitumen recovery process may be used to extract bitumen from oil sands. Specifically, the bitumen recover process involves a step of treating oil sands with a propylene oxide capped glycol ether described by the structure: RO—(C2H4O)n—CH2CH(CH3)OH wherein R is a linear, branched, or cyclic alkyl, phenyl, alkyl phenyl group and n is 1 to 10.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.