Prediction Of Sand Bodies And Distribution Of Oil And Water In Chang 47 Block Of Chaoyang Gou Oil Field

The data of long 47 Block drilling show that the study area has a thick sandstone and high drilling oil test,and has a good development prospect.However,the characteristics of oil and water distribution and the main controlling factors of reservoir formation are not clear in this study area.In order to determine the distribution characteristics of the Fuyu oil layer sandstone,deepen the geological understanding,comprehensively utilize the seismic,geological and logging data,carry out three-dimensional seismic fine interpretation and reservoir prediction,determine the distribution characteristics of the reservoir of the river sand body and the distribution of oil and water in the Fuyu oil layer,and optimize the favorable oil rich area.The first is to make use of three dimensional seismic interpretation techniques,to explain the faults and horizons,to determine the properties of the faults,to carry out the characteristics of the tectonic traps,especially the micro amplitude structures,to carry out the structural period analysis,to analyze the role of different stages in the migration of oil and gas,and to carry out the analysis of seismic attributes and seismic inversion reservoir prediction methods.Guide the reservoir prediction.The study area is mainly affected by the southwest source,the sedimentary facies mainly is the delta plain and Delta front subfacies deposit,and the one and the two oil are supported.The main channel sand bodies in the layer group are mainly distributed in the north-south direction,and mainly develop sedimentary microfacies such as water and underwater distributary channel,mat like sand,crevasse fan,inter distributary Bay and flood plain,and distributary channel and crevasse fan are the main reservoir sand bodies.In the study area,the distribution of oil and gas in the Fu Yi formation is the most vertically,followed by the Fu two formation,and there is no uniform oil-water interface in the whole area.Based on the above research results and the data collected from the predecessors,three favorable oil accumulation areas in Chang 47 block were determined.