Prestack geostatistical inversion method and its application on the reservoir prediction of Changyuan oil field

The stratum distribution and porosity,permeability and oil-gas bearing properties can be revealed by prestack geostatistical inversion method and can get more reservoir informations than post-stack,it is the direction of further development on inversion reservoir prediction.Taking reservoir of north Saertu oilfield for example,3D Geological Objects for sand body distribution of study area are obtained by the quality control on the key technologies of rock physical model、prestack wavelet;lithologic body from the prestack geostatistical inversion method matches the underground geological object,thin reservoir、sand and mud interbed and isolated sand body can be depicted,but it's difficult to efficiently identify the flow of late stage development through elastic characters.The fine description of late-stage oilfield sand body can be provided by the study.