Reserve prediction method for fault control reservoir body oil and gas reservoir

• Main Authors: LI HONGYAN, LIU JUN, LI WEI, LI HAIYING, HUANG CHAO, LIAO MAOHUI
• Format: Patent
• Language: Chinese; English
• Published: 06.08.2024
• Subjects: CALCULATING; COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS; 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 provides a reserve prediction method for a fault control reservoir body oil and gas reservoir, and relates to the technical field of spherical pig, and the method specifically comprises the following steps: dividing a stratum into a reservoir facies and a non-reservoir facies, and building a two-stage lithologic nested model; calculating probability density functions respectively corresponding to a first-stage lithofacies and a second-stage lithofacies in the two-stage lithologic nested model; extracting a structure tensor attribute, constraining a first-stage lithofacies in the two-stage lithologic nested model, extracting an enhanced coherence attribute and a relative wave impedance attribute, constraining a second-stage lithofacies in the two-stage lithologic nested model, and further obtaining a phase control low-frequency model; and carrying out constrained sparse pulse inversion or geostatistical inversion by using the phase control low-frequency model, identifying a disconnection control