Method for treating a hydrocarbon-bearing formation with a fluid followed by a nonionic fluorinated polymeric surfactant
US8403050B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 30, 2007 |
| Grant date | Mar 26, 2013 |
| Priority date | — |
| Expiry date | Apr 6, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/604
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention includes a method for treating a hydrocarbon-bearing clastic formation having brine. The method includes contacting the hydrocarbon-bearing clastic formation with a fluid, which at least one of at least partially solubilizes or at least partially displaces the brine in the hydrocarbon-bearing clastic formation, and subsequently contacting the hydrocarbon-bearing clastic formation with a composition. The composition includes a nonionic fluorinated polymeric surfactant and solvent. When the composition is contacting the hydrocarbon-bearing clastic formation, the nonionic fluorinated polymeric surfactant has a cloud point that is above the temperature of the hydrocarbon-bearing clastic formation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.