煤层横向预测的地震技术研究——以鄂尔多斯煤盆地南部煤矿采区勘探为例

摘要

According to Jurassic coalfield geological characteristics in the southern Ordos coal basin, transversal prediction methods of horizon standardization, waveform analysis, logging constrained seismic inversion etc. adaptable to the area put forward. Practices have demonstrated that using the 3D seismic data coal seam transversal prediction can precisely describe coal seam hosting status of coal pinch out, scouring, thinning, splitting and merging belts and thickness variation etc.%依据鄂尔多斯煤盆地南部侏罗纪煤田地质特征,提出了层位标定法、波形分析法、测井约束地震反演等适合本区的煤层横向预测方法.实践表明,利用三维地震资料的煤层横向预测方法,可精细描述埋深500m左右的煤层尖灭、冲刷带、变薄带、分叉合并带、厚度变化等赋煤状态.