The Study On Forecast For Favorable Reservoirs In Baiyanghe Formation In Laojunmiao Structural Belt Of Jiuquan Basin

Reservoir prediction is not only the research focus at home and abroad,but also the key of oil and gas exploration,it has a great significance that we take a depth study of it.The Baiyanghe formation in Laojunmiao structural belt of Jiuquan Basin has abundant oil and gas resources,but its structure condition is complex,its sedimentary range is obscure,and the sand bodies in it are lapped.In order to accurately predict its reservoir,this dissertation researches gradually by three stages: fine structure interpretation,seismic attributes analysis and structure modeling.Through the study of fine structure interpretation,this dissertation summarizes a kind of structural interpretation program,and sums up the experiences of it.Besides,this dissertation describes the feature of horizons,faults and traps in the destination area clearly,and laid a good foundation for reservoir prediction.Through the study of the seismic attribute analysis,this dissertation sums the classification methods and extraction methods of seismic attribute,and picks out the suitable attribute combination which is sensitive to the reservoir.By a comprehensive analysis of the attribute combination,this dissertation divides the range of the sedimentary in the destination area,and determines the plane range of the reservoir.On the basis of analysis to the fault-related fold theory,analyze the structural deformation and crustal stress,to determine a more reasonable construction style.Carry the Thrust Belt of the Laojunmiao-Shiyougou tectonic evolution analysis,make a clear break with impulse control action tectonic movement of hydrocarbon accumulation.This research summarizes the experience of reservoir prediction,and describes the spatial shape,the extension range,and the thickness information of the target reservoir accurately.The achievement can be a reliable assist for the further research.