Method for predicting coal seam gas parameters
The invention provides a method for predicting coal seam gas parameters. The method comprises the following steps of 1) constructing a coal molecular model according to coal sample components and structure information obtained by an experiment and optimizing the coal molecular model; 2) based on mol...
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| creator | MENG YUNQING XIA JUNKAI NIE BAISHENG LI SHICHAO ZHANG SHUO MENG HANXIE |
| description | The invention provides a method for predicting coal seam gas parameters. The method comprises the following steps of 1) constructing a coal molecular model according to coal sample components and structure information obtained by an experiment and optimizing the coal molecular model; 2) based on molecular simulation, adding a corresponding number of water molecules to a single coal molecule according to coal sample moisture, then adsorbing methane molecules, converting an adsorption result unit into a consistent statistical magnitude, and fitting to obtain a coal adsorption gas isotherm of different moisture and a functional expression thereof; 3) measuring coal seam pressure, and converting according to an ash content of a coal sample based on the isotherm map to obtain the coal seam gascontent; and 4) integrating the isotherm function expression to obtain a gas extraction quantity. The method for predicting the coal seam gas parameters has great application prospects in predicting the coal seam gas content |
| format | Patent |
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The method comprises the following steps of 1) constructing a coal molecular model according to coal sample components and structure information obtained by an experiment and optimizing the coal molecular model; 2) based on molecular simulation, adding a corresponding number of water molecules to a single coal molecule according to coal sample moisture, then adsorbing methane molecules, converting an adsorption result unit into a consistent statistical magnitude, and fitting to obtain a coal adsorption gas isotherm of different moisture and a functional expression thereof; 3) measuring coal seam pressure, and converting according to an ash content of a coal sample based on the isotherm map to obtain the coal seam gascontent; and 4) integrating the isotherm function expression to obtain a gas extraction quantity. The method for predicting the coal seam gas parameters has great application prospects in predicting the coal seam gas content</description><language>chi ; eng</language><subject>CALCULATING ; COMPUTING ; COUNTING ; DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FORADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORYOR FORECASTING PURPOSES ; ELECTRIC DIGITAL DATA PROCESSING ; PHYSICS ; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE,COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTINGPURPOSES, NOT OTHERWISE PROVIDED FOR</subject><creationdate>2020</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=20201225&DB=EPODOC&CC=CN&NR=112132337A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20201225&DB=EPODOC&CC=CN&NR=112132337A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>MENG YUNQING</creatorcontrib><creatorcontrib>XIA JUNKAI</creatorcontrib><creatorcontrib>NIE BAISHENG</creatorcontrib><creatorcontrib>LI SHICHAO</creatorcontrib><creatorcontrib>ZHANG SHUO</creatorcontrib><creatorcontrib>MENG HANXIE</creatorcontrib><title>Method for predicting coal seam gas parameters</title><description>The invention provides a method for predicting coal seam gas parameters. The method comprises the following steps of 1) constructing a coal molecular model according to coal sample components and structure information obtained by an experiment and optimizing the coal molecular model; 2) based on molecular simulation, adding a corresponding number of water molecules to a single coal molecule according to coal sample moisture, then adsorbing methane molecules, converting an adsorption result unit into a consistent statistical magnitude, and fitting to obtain a coal adsorption gas isotherm of different moisture and a functional expression thereof; 3) measuring coal seam pressure, and converting according to an ash content of a coal sample based on the isotherm map to obtain the coal seam gascontent; and 4) integrating the isotherm function expression to obtain a gas extraction quantity. 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The method comprises the following steps of 1) constructing a coal molecular model according to coal sample components and structure information obtained by an experiment and optimizing the coal molecular model; 2) based on molecular simulation, adding a corresponding number of water molecules to a single coal molecule according to coal sample moisture, then adsorbing methane molecules, converting an adsorption result unit into a consistent statistical magnitude, and fitting to obtain a coal adsorption gas isotherm of different moisture and a functional expression thereof; 3) measuring coal seam pressure, and converting according to an ash content of a coal sample based on the isotherm map to obtain the coal seam gascontent; and 4) integrating the isotherm function expression to obtain a gas extraction quantity. The method for predicting the coal seam gas parameters has great application prospects in predicting the coal seam gas content</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CALCULATING COMPUTING COUNTING DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FORADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORYOR FORECASTING PURPOSES ELECTRIC DIGITAL DATA PROCESSING PHYSICS SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE,COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTINGPURPOSES, NOT OTHERWISE PROVIDED FOR |
| title | Method for predicting coal seam gas parameters |
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