Expansion-hose hydraulic fracturing method for coal seam permeability increasing

The invention discloses an expansion-hose hydraulic fracturing method for coal seam permeability increasing. The expansion-hose hydraulic fracturing method for coal seam permeability increasing comprises the five steps of assembling a hydraulic fracturing system, drilling a coal seam, arranging expa...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	LIU SONGYONG, XIAO NANZHE, ZHOU XIN, LI HONGSHENG, GUO CHUWEN, WANG FENGCHAO
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS
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