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...
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| creator | LIU SONGYONG XIAO NANZHE ZHOU XIN LI HONGSHENG GUO CHUWEN WANG FENGCHAO |
| description | 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 expansion hoses, fracturing and carrying out pressure relief. According to the expansion-hose hydraulicfracturing method for coal seam permeability increasing, the expansion hoses in hydraulic fracturing drilled holes are expanded through high-pressure water provided by a high-pressure pump, fracture structures of the coal seam are damaged under the action of the expansion hoses to form cracks, so that the effects of permeability increasing and pressure relief are achieved; and the method avoids aphenomenon that water blocks air holes, in general hydraulic fracturing methods simultaneously, avoids waste for water resources, and solves the problem of difficult gas extraction for a soft coal seam with low permeability an |
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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 expansion hoses, fracturing and carrying out pressure relief. According to the expansion-hose hydraulicfracturing method for coal seam permeability increasing, the expansion hoses in hydraulic fracturing drilled holes are expanded through high-pressure water provided by a high-pressure pump, fracture structures of the coal seam are damaged under the action of the expansion hoses to form cracks, so that the effects of permeability increasing and pressure relief are achieved; and the method avoids aphenomenon that water blocks air holes, in general hydraulic fracturing methods simultaneously, avoids waste for water resources, and solves the problem of difficult gas extraction for a soft coal seam with low permeability an</description><language>chi ; eng</language><subject>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</subject><creationdate>2019</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20191206&DB=EPODOC&CC=CN&NR=110541697A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20191206&DB=EPODOC&CC=CN&NR=110541697A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>LIU SONGYONG</creatorcontrib><creatorcontrib>XIAO NANZHE</creatorcontrib><creatorcontrib>ZHOU XIN</creatorcontrib><creatorcontrib>LI HONGSHENG</creatorcontrib><creatorcontrib>GUO CHUWEN</creatorcontrib><creatorcontrib>WANG FENGCHAO</creatorcontrib><title>Expansion-hose hydraulic fracturing method for coal seam permeability increasing</title><description>The invention discloses an expansion-hose hydraulic fracturing method for coal seam permeability increasing. 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| subjects | 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 |
| title | Expansion-hose hydraulic fracturing method for coal seam permeability increasing |
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