Construction method of oil content index model for predicting oil content of reservoir and prediction method of oil content of reservoir

• Main Authors: WU TIANQIAN, LIU JIANBO, LEI GUORUI, JIA GUANGLIANG, CHENG HAOHUA, WANG FEILONG, YANG CHUNWEN, WEN WEI
• Format: Patent
• Language: Chinese; English
• Published: 07.02.2020
• 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

The invention relates to a construction method of an oil content index model for predicting the oil content of a reservoir and a prediction method of the oil content of the reservoir, and belongs to the field of prediction of the oil content of the reservoir. The method comprises the following steps: 1) according to historical drilling data in a research area, acquiring logging parameters and initial oil production data which change along with depth; 2) assigning values to the qualitative parameters, and digitizing the qualitative parameters; 3) performing normalization processing on the digitized qualitative parameters and the digitized quantitative parameters; 4) setting initial weights of qualitative parameters and quantitative parameters, and calculating an oil content index; 5) fitting the preliminarily calculated oil content index with the initial oil yield, and determining a correlation coefficient; adjusting the weight of each logging parameter according to the correlation coefficient. According to th