Application Of High Accuracy 3D Seismic Acquisition Technology In Kuqa Mountainous Area

Since 2010,in order to meet the need of seismic surveys in the steep mountain complex structure of Kuqa foreland basin thrust belt,Kuqa mountain high accuracy 3D seismic acquisition technology was developed.The research started from 2012,with reference to the complex mountain 3D survey in Tarim Basin Kuqa Depression Crassus Tectonic Belt – Wushi Sag,and obtained some results on optimized designing of geometry,source parameter selecting,application of supporting assistive technology,etc.A methodology of steep structure geometry designing which meet the need of pre-stack migration imaging and dynamite & vibroseis united source parameter selection which can significantly improve S/N ratio was produced.Also,the high accuracy sensing signal assisted operation technology and complex surface real time QC technology were perfected.The new technology improved a lot on geometry optimizing,source parameter selecting,application of supporting assistive technology,etc.,compared to the previous 3D survey methods.Based on the new method,good results were achieved during Tarim Basin complex mountain steep structure seismic survey.By this research,the complex mountain 3D seismic acquisition technology got enriched and provided stronger technical support to Tarim Basin complex mountain oil and gas exploration.