Abstract：The virtual-reality technique is multiple techniques integrative using computer graphics,computer visual,psychology,artificial intelligence,sensor and network communication,creates a visual environment in computer,and makes the user have participating sense by himself through real-time,stereo 3-D figure show,voice analogue and naturally real-time interchanging between the human and visual environment.Based on virtual-reality platform,the paper uses the superiority in function of virtual-reality technique to carry out fine structural interpretation,lithologic volume identification and drill-trail optimization in complex fault zone of Nanpu sage and got following knowledge: ①using virtual-reality technique to develop fine structural interpretation in the area of seismic data with higher S/N ratio is rapid and high-efficient method,but it is difficult to use the technique in the area of seismic data with lower S/N ratio;②the virtual-reality technique can rapidly recognize some special anomalous sand body and litologic traps,and classify the distribution range and structural feature,but is difficult to describe the interior of lithologic trap;③the virtual-reality technique has processing function of multiple CPU parallel attribute,the speed of commutating attributes is fast,which is of benefit for attributes analysis,but the attributes type and constraint condition provided by the software is fewer;④the spectrum decomposition module in virtual-reality system only carries out slice computation,cannot carry out volume computation;⑤the function of 3-D visualization in virtual-reality system can rapidly optimize the drilling trail,providing straightforward foundation for drilling deployment.
