Assessment method for dynamic reserves of condensate gas reservoir

• Main Authors: SHI JUNTAI, LI WENBIN, ZHANG LONGLONG, WANG-TIAN DUOYI, YANG BO, JIA YANRAN
• Format: Patent
• Language: Chinese; English
• Published: 13.05.2022
• Subjects: 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

The invention discloses a condensate gas reservoir dynamic reserve assessment method, which comprises the following steps of: acquiring the cumulative yield of well flow, a comprehensive pore compression coefficient, a two-phase volume coefficient of condensate oil and condensate gas, a volume coefficient of original condensate gas, a condensate gas deviation coefficient and the proportion of natural gas in the well flow; and determining the original geological reserves of the condensate gas according to the gas reservoir parameters, the production dynamic data and the parameters, and determining the original geological reserves of the natural gas and the original geological reserves of the condensate oil according to the original geological reserves of the condensate gas and the proportion of the natural gas in the well flow. According to the method, the influence of factors such as condensate oil, condensate gas, water vapor expansion, pore shrinkage, bound water expansion, water invasion and water producti