The Analysis Of Fault-related Fold In Weibei Area

Based on the 2D seismic data,and the geophysical data,making use of seismic data interpretation techniques,technology of balanced section technique and triangle shear software for studying geometry characters of faults related fold in Weibei area and analyzing kinematic characteristics.Summarizing above research results and utilizing the Finite-Element simulation software(Flac 3D),the faults and strata of original seismic section 08xy-2 were digitized using unique software codes on the condition of the application of Cullen-Moore inner model(mainly setting three layers: the ductile basement strata,the brittle sedimentary strata and the overlaying strata).Thereby,a simple and ideal mathematical model has been established and the deformation process of cross-section 08xy-2 can be easily observed after experienced several steps operating.The final deformation shape of the model indicates a high similarity compared with the real geological body,The simulation results also demonstrate that the fault-related folds in the study area mainly formed at Yanshan epoch and affirm that the most suitable kinetic evolution model for large-scale fault-related folds is a triangle shear model accompanied with basement involvement.Through 2D average stress map and plastic zone distribution map at the X-X axis,the rock formation-failure zones which can predict high-quality reservoirs can be easily identified.In this case,combine with the scholars' research results and deep analysis of seismic data,they can provide a useful proposal for exploring the gas and oil in the target layer.