Method of oil recovery using a foamy oil-external emulsion
US8100178B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 17, 2006 |
| Grant date | Jan 24, 2012 |
| Priority date | — |
| Expiry date | Jul 11, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/594
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An improved method of producing hydrocarbons from a subterranean formation in which a solids-stabilized emulsion (SSE) is formed, the SSE comprising oil as a first liquid, droplets of a second liquid suspended in the oil, and solid particles that are insoluble in both the oil and the second liquid at the conditions of the subterranean formation. The SSE with dissolved gas is injected into the subterranean formation as a drive fluid, and at least a portion of the SSE is placed into one or more area of the subterranean formation having an in situ pressure sufficiently lower than the selected partial pressure to permit evolution of at least a portion of the gas from the oil. Furthermore, a method of making the foamy SSE is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.