Physical-data cooperative driven unconventional gas well yield prediction method and system

The invention discloses a physical-data cooperative driven unconventional gas well yield prediction method and system, and the method comprises the following steps: S1, obtaining the production data of a target unconventional gas well, and carrying out the preprocessing of the production data; s2, b...

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Bibliographische Detailangaben
Hauptverfasser:	DUAN YOUJING, REN WENXI, ZENG XIAOJUN, GUO JIANCHUN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CALCULATING COMPUTING COUNTING DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FORADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORYOR FORECASTING PURPOSES EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING ELECTRIC DIGITAL DATA PROCESSING FIXED CONSTRUCTIONS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS PHYSICS SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE,COMMERCIAL, FINANCIAL, MANAGERIAL, SUPERVISORY OR FORECASTINGPURPOSES, NOT OTHERWISE PROVIDED FOR
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Beschreibung
Zusammenfassung:	The invention discloses a physical-data cooperative driven unconventional gas well yield prediction method and system, and the method comprises the following steps: S1, obtaining the production data of a target unconventional gas well, and carrying out the preprocessing of the production data; s2, based on the dynamic discharge area calculation model and a material balance equation coupled with the dynamic discharge area, establishing a target function by taking the minimum accumulative yield error as a target; s3, carrying out historical fitting to obtain model parameters; s4, calculating the average pressure of the dynamic discharge area at different moments; s5, gas production indexes corresponding to the gas well at different moments are calculated; s6, a gas production index-material balance quasi-time curve is drawn, and a characteristic straight line is obtained; s7, fitting parameters are obtained according to the slope and the slope distance of the feature straight line; and S8, calculating a gas pro