Synthetic Seismic Data Interpretation And Study On Structural Features In Linjiang Area Of Yingshan Fault Depression

In this paper, we use 3D seismic data, through artificial synthetic seismogram, finish horizon calibration, set up sequence stratigraphic framework, and then complete the riverfront fine seismic data interpretation work. After completing interpretation work, further using speed spectrum and VSP data to build body, get the average speed of the reflector, multiplying the time section and the average speed, finally into depth profile, due to the structural characteristics of layer depth is not the same, so it is necessary according to the different characteristics of layer depth in the division of tectonic units, at the same time to the fracture development features and distribution characteristics were summarized, and on this basis finally complete the division of tectonic styles and structural layer. After finishing the work, and finally to summarize the work area of favorable conditions, reservoir and cover for predicting areas favorable for completion.Yingshan fault depression can be divided into four station deep paleo uplift, the central trough, slope and North Eastern low uplift four tectonic units, the shallow layer shows "morphological characteristics of East West High low". Basin in the early tension under the effect of the main structural styles for the extensional structure, at the same time in the longitudinal direction in turn could be divided into rift structure, fault depression transformation structure layer, depression structure and tectonic inversion layer four structure layers, and this rifting period, stable sedimentary period and tectonic inversion period four basin evolution stage corresponding. Finally will find under the action of pulling tension at the early stage, more active faults in fault depression period can be seen.Through the work area of favorable conditions of reservoir and cover for adequate research, and combined with the structural characteristics of basement faults, determine the work area south should have favorable conditions by controlling oil and gas reservoirs, and has good reservoir and caprock, and full of oil and gas migration channel, so eventually determine the favorable area for the work area is the southern sag area.