Invention Grant
- Patent Title: Mining method for gassy and low permeability coal seams
- Patent Title (中): 高瓦斯和低渗透煤层开采方法
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Application No.: US14126420Application Date: 2012-06-15
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Publication No.: US09273553B2Publication Date: 2016-03-01
- Inventor: Ian Gray
- Applicant: Ian Gray
- Agency: Roger N Chauza, PC
- Priority: AU2011902475 20110624
- International Application: PCT/AU2012/000688 WO 20120615
- International Announcement: WO2012/174586 WO 20121227
- Main IPC: E21C41/00
- IPC: E21C41/00 ; E21F7/00 ; E21B43/26 ; E21C27/00 ; E21C37/06 ; E21C41/18
Abstract:
A method of degassing a coal seam by directionally drilling a borehole in a rock formation that is adjacent the coal seam, or between two different coal seams. The borehole is then pressurized 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.
Public/Granted literature
- US20140117739A1 Mining Method for Gassy and Low Permeability Coal Seams Public/Granted day:2014-05-01
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