Study On The Optimization Of The Observation System For High-steep Structure Imaging

The imaging problem of complex high-steep structure in Kuqa Depression Tarim Basin is prominent,high-density,high-folds and wide-azimuth 3D seismic acquisition is an important development direction for this problem at current stage.It is needed to optimize the 3D geometry in the seismic geologic condition of the Kuqa depression,which can effectively guide the seismic acquisition in this area.Firstly,this paper introduces the research status and development trend of the complex high-steep structural imaging at home and abroad.Next,the geological conditions,the data characteristics and the main problems of Kuqa depression are analyzed.Then,choosing the typical high-steep structural zone in Kuqa depression,it is studied for optimizing the 3D acquisition geometry that the 2D model,Dabei area 3D digital model,Keshen mountain 3D physical model,and Dabei wide-azimuth 3D and Bozi wide-azimuth 3D seismic acquisition.Based on the above,the optimal direction and design process of high-density,high-folds and wide-azimuth 3D acquisition geometry in Kuqa depression are put forward;Finally,the effect of high-density,high-folds and wide-azimuth 3D acquisition in Kuqa depression is demonstrated and analyzed,and the geometry schemes are designed for the advantageous high-steep structural exploration area in Kuqa depression.