三维地震勘探技术在多组系复杂构造区的应用

勘探区位于川东高陡复杂地区,工区地表、地震地质条件复杂,地质构造受多期次多组系应力作用,虽经过了多次二维地震勘探,但仍然难以搞清各构造之间的相互接触关系及区内断层的断点位置和组合关系.在该地区进行的三维地震勘探施工中,通过优化野外采集施工方式、室内地震资料处理技术措施、三维可视化技术精细地震资料对比解释技术,提高了地震...

Application of 3D seismic exploration technology in complex structure area with multi-formation system

Prospecting area is located in a high-steep complex area in east Sichuan.Surface and seismic geological condition are complex in work area.Because the geological structure was subjected to the stress action of multi-stage multi-formation systems,it is difficult to beat out the interrelationship among structures and breakpoint location and combination relation of fault although 2D seismic prospecting has been performed in this area for many times.The seismic resolution is improved and the various structural characteristics and their interrelationship are made sure through selecting the field acquisition operation mode,optimizing the seismic data processing technology and using the 3D visualization technology to conduct the comparison and interpretation of seismic data.The fault is finely described from a 3D angle to obtain an accurate and reliable result.In particular,a large concealment high zone is found to provide the rich and reliable information for further potential tapping,which proves that the method is the most accurate prospecting method to make sure the interrelationship among various structures in complex structure areas with multi-formation system.