Cationic polymers for foam fracturing applications
US10155901B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 9, 2014 |
| Grant date | Dec 18, 2018 |
| Priority date | — |
| Expiry date | May 27, 2034 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/267
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method of foam fracturing a subterranean formation includes providing an fracturing foam fluid comprising an aqueous base fluid, a cationic polymer, optionally a foam surfactant comprising at least one of an amphoteric surfactant, cationic surfactant, an anionic surfactant, and combinations thereof, and sufficient gas to form a foamed fracturing fluid; and fracturing the subterranean formation with the foamed fracturing fluid. Stable fracturing foams include an aqueous base fluid, a cationic polymer, optionally a foam surfactant comprising at least one of an amphoteric surfactant, cationic surfactant, an anionic surfactant, and combinations thereof, and sufficient gas to form a foamed fracturing fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.