Methods for increasing the surface area of fractures or to increase the depth of penetration fractures in low permeability oil and gas reservoirs containing shale to increase productivity
US10053621B2 · kind B2 · utility
4Cited by
3References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 18, 2014 |
| Grant date | Aug 21, 2018 |
| Priority date | — |
| Expiry date | Jul 18, 2034 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/27
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method of treating a subterranean formation includes providing capsules comprising at least one of a mineral acid, a Lewis acid, a hydrolysable acid precursor, and mixtures thereof; providing a carrier fluid; placing the capsules and the carrier fluid into a zone in a shale formation, the zone comprising fractures; allowing the capsules to at least partially dissolve. Upon the hydrolysis of the acid, etching of the faces of the fractures occurs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.