Application of prestack depth migration techniques of STseis software system in BS6 area

3-D prestack depth migration is the most effective way of imaging in areas of complex structure and rapid lateral variations of velocity. We discussed the prestack depth migration techniques and processing flow of STseis software system and presented the results of 3-D prestack depth migration on the real seismic data from BS6 area. Compared to poststack time migration sections, the fault planes are more definite and the image of buried hill is clearer on the prestack depth migration sections. This proves the effectiveness of 3-D prestack depth migration techniques of STseis software system.