| The Shanghe area is located in the eastern part of the central uplift belt of Huimin depression.The overall structural features are complex,the faults develop,and the lateral reservoir changes rapidly.There are three kinds of reservoir types:structural reservoir,structural lithologic reservoir and lithologic reservoir.There are eight oil-bearing formations in the study area,in which the Second and the Third member are the main reserves.In order to improve reservoir description accuracy and realize fine description of small and medium faults in complex structures,based on logging,oil testing and seismic data,different geophysical techniques are applied to different reservoir types to describe reservoir and structure.For structural reservoirs,based on the backbone section,fine resolution faults with high resolution coherence and dip multi attribute fusion bodies are used to identify faults.Combined with 3D interpretation,the structural trap area 8.6km~2 is refined.According to the structural lithologic reservoir in sequence stratigraphic division on the basis of the application of RMS amplitude,instantaneous phase,arc three attribute intersection fusion,in the Shanghe area of reservoir fine description.The turbidite sandstone reservoir,application of comprehensive calibration technology,identify the turbidite sandstone boundary using wavelet frequency imaging technology,and has carried on the description of frequency imaging seismic profiles of seismic reflection characteristics of sand body boundary is more continuous,more clear,is the fine description of the turbidite sand bodies 20.Based on the study and application of different seismic interpretation methods adopted in different reservoir types,the favorable area 28km~2 has been accumulated in geological exploration in Shanghe area,and 35 million tons of trap resources have been predicted,which has achieved good results and will effectively guide the next exploration deployment. |
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