Sulfonated relative permeability modifiers for reducing subterranean formation water permeability
US9598631B2 · kind B2 · utility
4Cited by
3References
17Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 5, 2015 |
| Grant date | Mar 21, 2017 |
| Priority date | — |
| Expiry date | Mar 5, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2810/10
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Compositions and methods for treating a water and hydrocarbon producing subterranean formation to reduce the water permeability of the formation without reducing the hydrocarbon permeability of the formation are provided. In one embodiment, the method includes providing a treatment fluid including a base fluid and a relative permeability modifier including a polymer of at least one hydrophilic monomer and at least one hydrophobically modified hydrophilic monomer, wherein the polymer includes a sulfonate moiety, and introducing the treatment fluid into at least a portion of a subterranean formation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.