EP 2899363 A1 20150729 - METHOD FOR JOINT-MINING OF COALBED GAS AND COAL
Title (en)
METHOD FOR JOINT-MINING OF COALBED GAS AND COAL
Title (de)
VERFAHREN ZUR GLEICHZEITIGEN GEWINNUNG VON KOHLEBETTGAS UND KOHLE
Title (fr)
PROCÉDÉ D'EXTRACTION MINIÈRE CONJOINTE DE GAZ DE HOUILLE ET DE CHARBON
Publication
Application
Priority
- CN 201210356627 A 20120921
- CN 2013083781 W 20130918
Abstract (en)
Provided is a method for joint-mining of coalbed gas and coal. The method comprises: a well-drilling step; a fracturing and penetration step; a coalbed gas extraction step; an ignition step; and, an underground gasification step. The method combines an underground coal gasification technology and a coalbed gas extraction technology, not only allows for utilization of the high temperature of underground gasification to heat a coalbed, thus increasing the permeability of a coal seam and increasing the recovery rate of the coalbed gas, but also allows for utilization of the coalbed gas to perform the drilling and fracturing and penetration processes, thus increasing the efficiency of underground coal gasification.
IPC 8 full level
E21B 43/00 (2006.01)
CPC (source: EP US)
E21B 7/046 (2013.01 - US); E21B 41/0064 (2013.01 - US); E21B 43/00 (2013.01 - EP US); E21B 43/006 (2013.01 - EP US); E21B 43/164 (2013.01 - EP US); E21B 43/2401 (2013.01 - US); E21B 43/247 (2013.01 - US); E21B 43/2605 (2020.05 - EP US); E21B 43/295 (2013.01 - EP US)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 2899363 A1 20150729; EP 2899363 A4 20160622; AU 2013317409 A1 20150409; AU 2013317409 B2 20160623; CN 103670338 A 20140326; CN 103670338 B 20160615; US 2015247385 A1 20150903; WO 2014044192 A1 20140327; ZA 201502650 B 20161130
DOCDB simple family (application)
EP 13838778 A 20130918; AU 2013317409 A 20130918; CN 201210356627 A 20120921; CN 2013083781 W 20130918; US 201314430086 A 20130918; ZA 201502650 A 20150420