沁水盆地东北部区域深部煤层气地震勘探技术研究

Study on Deep Part CBM Seismic Prospecting Technology in Northeast Qinshui Basin

在沁水盆地东北部区域开展的地震勘探技术工作中,通过优化观测系统参数、双线接收、高叠加次数和大能量信号源等措施提高了数据采集的信噪比,制定有针对性的处理手段,提供了地震时间剖面的高精度成像,采用精细构造解释、波阻抗反演、AVO属性响应特征分析,对煤层赋存形态和厚度、断裂构造形态、煤层气富集区进行了较为精准的预测,取得了较好的地质效果,为该区的煤层气开发利用奠定了坚实的基础。

In the seismic prospecting technical works carried out in northeast Qinshui Basin,through observation system parameters optimization,bifilar receiving,higher stacking folds and stronger energy signal source etc measures have promoted S/N ratio in data acquisition.Constitution of individualized processing means have offered seismic time section high precision imaging ability.Using fine structure interpretation,wave impedance inversion,AVO attribute response characteristic analysis etc have predicted coal occurrence configuration,thickness,faulted structure forms and CBM enrichment area more accurate.Thus the study has achieved better geological effects,and laid a solid foundation for CBM exploitation and utilization in the area.