Application of Inverted Density Attribute Body to Saturation Prediction

Application of density parameters is becoming more and more important in reservoir evaluation.The inverted density attribute body has been used successfully to calculate water saturation in sandstone reservoirs in V area of Russian.Through analysis of the relationship between density of reservoirs with different porosity and water saturation under stable sedimentary environment,it is concluded that the density of reservoirs increases linearly with saturation,while the fluid content in tight sandstones has little influence on the density parameters.Inverted density dataset has been obtained from pre-stack simultaneous inversion,and has been applied to validation of linear relation in area V of Russian.The saturation estimation results are basically consistent with logging analyzing results.The application results show that the inverted density attribute body can been used to calculate water saturation under stable sedimentary environment.