EP 3088660 A1 20161102 - UNDERGROUND GASIFICATION IGNITION METHOD
Title (en)
UNDERGROUND GASIFICATION IGNITION METHOD
Title (de)
UNTERIRDISCHES VERGASUNGSZÜNDVERFAHREN
Title (fr)
PROCÉDÉ DE BRÛLAGE PAR GAZÉIFICATION SOUTERRAINE
Publication
Application
Priority
- CN 201310717057 A 20131223
- CN 2014074202 W 20140327
Abstract (en)
An underground gasification ignition method comprises the following steps: making a directional drilling and a vertical well to construct an underground gasification furnace; using a cold fracturing method to pre-penetrate a coal seam; and igniting in the vertical well at an end of the directional drilling.
IPC 8 full level
E21B 43/295 (2006.01); E21B 43/247 (2006.01)
CPC (source: EP US)
E21B 7/04 (2013.01 - US); E21B 43/243 (2013.01 - EP US); E21B 43/26 (2013.01 - EP US); E21B 43/295 (2013.01 - EP US)
Citation (search report)
See references of WO 2015096290A1
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)
US 2016251950 A1 20160901; CN 103726818 A 20140416; EP 3088660 A1 20161102; WO 2015096290 A1 20150702; ZA 201602967 B 20170726
DOCDB simple family (application)
US 201415032661 A 20140327; CN 201310717057 A 20131223; CN 2014074202 W 20140327; EP 14873128 A 20140327; ZA 201602967 A 20160504