Title:
MINING METHOD FOR GASSY AND LOW PERMEABILITY COAL SEAMS
Document Type and Number:
WIPO Patent Application WO/2012/174586
Kind Code:
A3
Abstract:
A method of degassing a coal seam by djrectionally drilling a borehole in a rock formation that is adjacent the coal seam, or between two different coal seams. The borehole is then pressurised to fracture the adjacent coal seam(s) to enhance the permeability thereof and allow fluids to flow from the coal seam to the borehole and be extracted from the coal seam.
Inventors:
GRAY IAN (AU)
Application Number:
PCT/AU2012/000688
Publication Date:
March 28, 2013
Filing Date:
June 15, 2012
Export Citation:
Assignee:
GRAY IAN (AU)
International Classes:
E21C41/18; E21B43/17; E21B43/25; E21B43/26; E21F7/00
Foreign References:
| CN101575983A | 2009-11-11 | |||
| CN101644166A | 2010-02-10 | |||
| US5033795A | 1991-07-23 | |||
| US3650564A | 1972-03-21 |
Other References:
See also references of EP 2723986A4
Download PDF: