Viscosity reduction of heavy oils by cashew nut shell liquid formulations
US10494580B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 14, 2014 |
| Grant date | Dec 3, 2019 |
| Priority date | — |
| Expiry date | Aug 14, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10L2200/0469
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present disclosure provides compositions and methods of use of cashew nut shell liquid (CNSL) and its derivatives as one of the components for decreasing the viscosity of heavy oils, extra heavy oils, high asphaltene natural bitumen, and tar sands (i.e., heavy oils). The decrease in viscosity of heavy oils increases the ability of the heavy oil mixture to be piped, transported, stored and used. The present disclosure provides compositions containing at least one of anacardic acid, cardanol and cardol, and at least one of a surfactant, a co-solvent, and water. The present disclosure provides compositions that are useful as viscosity reducing agents, heavy oil upgrading agents, wellbore cleaning agents, enhanced oil recovery agents, and cleaning agents for asphaltene-containing materials. Biofuel compositions are also provided by the present disclosure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.