Methods for etching fractures and microfractures in shale formations
US9909057B2 · kind B2 · utility
3Cited by
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20Claims
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Key dates
| Filing date | Sep 20, 2013 |
| Grant date | Mar 6, 2018 |
| Priority date | — |
| Expiry date | Nov 14, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K2208/28
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method of treating a subterranean formation includes providing a treatment fluid comprising particles of at least one of a hydrolysable in-situ acid generator and a hydrolysable in-situ chelating agent generator. The treatment fluid is combined with a carrier fluid and is introduced into a subterranean formation. The particles are placed in fractures or microfractures where, upon the hydrolyzing of the acid or chelating agent generator, etching of the faces of the fractures or microfractures occurs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.