Use of organoclay as emulsifier in polymeric gels for water permeability reduction
US9951593B2 · kind B2 · utility
8Cited by
9References
10Claims
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Key dates
| Filing date | Apr 22, 2014 |
| Grant date | Apr 24, 2018 |
| Priority date | — |
| Expiry date | Oct 13, 2036 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K8/516
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Organoclay is used as an alternative emulsifier and reinforcing agent to enhance the strength of emulsified polymeric gel aqueous solutions and form water in oil emulsions. The stability of the emulsion can be controlled by controlling salinity and the intensity of initial mixing. The new system can be used for water shut-off treatments as well as a relative permeability modifier in high water permeability zones. In addition, the system can tolerate salts much better than classical surfactants. This system will be appropriate for wellbores having high temperature (>85° C.) with harsh environmental conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.