采区三维地震资料构造解释方法

Structure Interpretation Methods of Three Dimensional Seismic Data in Coal Mining

根据处理给出的偏移数据体,通过整理钻孔资料和地质资料,构建起勘探区的地质模型,利用测井资料对地震反射波进行层位标定,确定需要解释的地质层位与地震层位对应关系,进行地震层位追踪解释,然后利用三维可视化、相干体等多种属性对目的层的反射波进行分析,确定勘探区内的断层、陷落柱等地质构造,并根据钻孔数据求取速度信息,最终把时间层位转换成深度层位,为矿方提供可靠的构造成果。结果表明,通过上述三维地震资料的解释,能快速、有效的圈定5米以上断层,直径20米以上的陷落柱和10米以上的褶曲。

According to the data after migrated,we through these well data and geological data to construct the geological model from the exploration area,logging information was used to calibrated the relationship between the seismic reflection wave and the geological strata,then we tracked the seismic horizon according to the relationship,and then used three-dimensional visualization,coherence and other properties of the target reflection wave to determine the geological structure in exploration area,such as fault and collapse columns,we also based on drilling data to obtain velocity information,and eventually converted the time horizon into a depth layer and provided the reliable structure results for mine. The results show that the interpretation method can fast and effective delineate the fault for more than 5 meters,the collapse columns more than 20 meters in diameter and the fold above 10 meters.