Ampholyte polymeric compounds in subterranean applications
US9816022B2 · kind B2 · utility
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8Claims
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Key dates
| Filing date | Jun 28, 2013 |
| Grant date | Nov 14, 2017 |
| Priority date | — |
| Expiry date | Nov 9, 2034 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/27
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Ampholyte polymeric compound that comprises at least one nonionic monomer, at least one sulfonic acid-containing monomer, and at least one cationic monomer may be useful in viscosifying treatment fluids for use in subterranean operations at a concentration of about 0.5 v/v % to about 30 v/v % of the treatment fluid. Such operations may involve introducing the treatment fluid into a wellbore penetrating a subterranean formation optionally at a pressure sufficient to create or extend at least one fracture in the subterranean formation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.