Abstract：Well-developed deep-sea turbidity sandstone reservoirs in Block M,a deep-sea oil field,are characterized by complex laterally varying petro-physics.It is very difficult to accurately predict oil gas reservoirs with conventional approaches.In order to meet this challenge,we firstly conduct feasibility study by rock physics analysis,AVO modeling and well-seismic response analysis and then we calculate elastic parameters,such as compressional wave impedance,shear wave impedance,and VP/VS ratio,with pre-stack AVA simultaneous inversion.Finally,we obtain Poisson's impedance and hydrocarbon indication attributes by attribute transform,and predict target reservoir.The study results show that shale and sandstone can be discriminated by Poisson's impedance,and oil gas sandstone can be predicted by hydrocarbon indication.With attribute plane graphs extracted from Poisson's impedance and hydrocarbon indication attribute data volume,we predict reservoir lithology and its distribution for future exploration well deployment.
