AVO Modeling and Its Application to Hydrocarbon Detection: A Case Study in BH3 Structure, Kazakhstan

Relationships between reservoir properties and elastic parameters are established using log data. Based on rock physics modeling, seismic responses and AVO features of rocks and fluids are analyzed using AVO forward modeling. The oil-bearing sandstone thickness is estimated using forward modeling of a 2D wedge, which has geologically meaningful model for geophysical interpretation. The markov-Chain Monte Carlo lithology simulation and geostatistical inversion are used to predict oil-bearing sandstone thickness and distribution in the Upper Jurassic reservoir and an effective workflow of hydrocarbon detection is established.