Study On The Residual Oil Distribution Of Reservoir Architecture

Fluvial facies reservoir is the main carrier of petroleum resources in C hina, 42.6% of the total development of reserves in our country. This kind of reservoir lateral alternation of sand body, sand mud interbed more frequently, with a strong reservoir heterogeneity.Main oil field after long-term mining, having been in determining stage.Study of reservoir configuration elements on the control function of remaining oil distribution of the reservoir is of great significance to improving reservoir development effect.First of all, through literature survey and experimental data summarizes the contact relationship of configuration elements is one of the important factors affecting sand body internal residual oil formation. In different configurations, configuration elements form mechanism on the basis of the model,after numerical simulation operation, respectively to study the longitudinal and plane configuration element combination model for the influence of residual oil, this thesis mainly studies the Lap type,lap type,non spacer type and planar configuration elements influence on residual oil distrib ution,putting forward the best solution mining of remaining oil.The non lap includ thin sand layer,horizontal spacer, mosaic configuration elements.The second, on the basis of a configuration constraints, using petrel to establish fine geological model,on the basis of fine geological model for coarsening,making the fine model compared with the coarse model, also studied the space and time step regarding the influence of meshing.In the end, on the basis of fine model, discussing the calculation method of fine residual oil saturation.