Reservoir Modeling and Case Study Based on Seismic Inversion

Analyzing well logging, seismic and geologic data in the studied area indicates that the logging response modes of an oil-bearing sandbody are low wave impedance, mid-low gamma ray and mid-high resistivity, its seismic response is low frequency and high amplitude, its sedimentary facies is mainly a delta frontal channel mouth bar. Through analyzing the wave impedance data volume obtained from logging constrain seismic inversion, a model of gas-bearing sandbody is predicted, which is used as conditions of facies control, a reservoir physical parameter model is established by using sequence Gauss collocated cokriging simulation on the basis of analyzing variation function of porosity data. The reliabilities of a sandbody distribution model and a physical parameter model established with the simulation method are proven in production.