Method for stimulating a coal seam to enhance the recovery of methane from the coal seam
US5419396A · kind A · utility
19Cited by
19References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 27, 1994 |
| Grant date | May 30, 1995 |
| Priority date | — |
| Expiry date | May 27, 2014 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/006
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method is disclosed for increasing the methane recovery rate through a wellbore which penetrates a coal seam. The invention utilizes the cavitation of the coal seam surrounding the wellbore after a substantial percentage of the original methane-in-place which is available for recovery from the wellbore has been recovered from the coal seam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.