Chemically induced stimulation of cleat formation in a subterranean coal formation
US5964290A · kind A · utility
14Cited by
41References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 22, 1997 |
| Grant date | Oct 12, 1999 |
| Priority date | — |
| Expiry date | Sep 22, 2017 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/27
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method for increasing the production of methane from a subterranean coal formation by chemically stimulating the formation of cleats in the formation to increase the rate of methane production from the formation by injecting an aqueous oxidant solution into the formation to stimulate the formation of cleats in the formation; and thereafter producing methane from the formation at an increased rate. Suitable oxidants include chlorine dioxide, metallic salts of perchlorate, chlorate, persulfate, perborate, percarbonate, permanganate, nitrate and combinations thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.