Numerical And Phycial Simulation Of The Thin Dolomite Layer Of Leikoupo Formation,Pengzhou

Dolomite reservoirs in Sichuan area have great potential for development.However,due to the complex development of dolomite reservoirs in this area,the seismic response characteristics of dolomite reservoirs are not clear that it is difficult to carry out fine reservoir characterization and to be identified.Because of the physical simulation forward modeling method was proved to be practical in solving practical problems in oil and gas production,Therefore,this paper uses forward modeling method which combines numerical simulation with physical simulation to simulate and analyze the target area.Analyzing and sorting out Seismic data and logging data collected in the target area.Several types of stratigraphic arrangement patterns are concluded according to the seismic wave velocity,formation thickness,geophysical response characteristics and reservoir location of the target formation.Based on this,five different types of seismic models are designed.The designed model is used for physical simulation and numerical simulation to analyze and compare the wavelength characteristics of the collected results.It can be known that when the first and second types of high-quality reservoirs are developed in the upper reservoir section,seismic reflection energy near high-quality reservoirs will be enhanced.When the development position of high quality reservoir is close to the boundary between upper reservoir section and middle interlayer,”extra weak seismic wave crest” will appear.When high-quality reservoirs are developed in lower reservoirs,strong wave crest and strong wave trough reflection will be formed,while weak wave crest and weak wave trough will be formed when high-quality reservoirs are underdeveloped.