用地震速度反演重建声波曲线  

Acoustic logging trace reconstruction using seismic velocity inversion

作　　者：何光明[1] 高如曾[1] 韩德贵 康昆 

机构地区：[1]四川石油管理局地调处研究所,637000

出　　处：《石油地球物理勘探》1994年第2期127-133,共7页Oil Geophysical Prospecting

摘　　要：由于受地震仪器观测精度及计算机处理能力的限制，地震反演的速度曲线所能达到的分辨率能力，不能满足勘探目标的需要（例如，10m以内的薄互层反演）。现设想地层沉积结构具有分形的特征，则可通过分形计算求得速度变化细节，尽可能地逼近实测的声波曲线。我们将这种由地震速度反演曲线进行分形计算的结果称为“重建的声波曲线”。通过对实际资料的试算表明，在声测资料较理想的情况下，重建的声波曲线与实测的声波测井曲线有很好的相关性，其相关值可以达到0．8以上。Restricted by both observation accuracy of seismic instruments and cornputer's ability in data processing, the resolution of velocity curve from seisrnic inversion fails to satisfy the requirements in oil exploration (for example,inversion of thin bed whose thickness is less than 10 meters ). Imagining that sedimentary series is of fractal characteristic,we can obtain detailed velocity variation by performing fractal computation,and make the fractal computation result approach real acoustic logging trace as fully as possible. The fractal computation result from inversion velocity curve is called 'reconstructed acoustic logging trace'. Real data computation shows that the reconstructed acoustic logging trace correlates to the real one very well,with the correlation coefficient better than 0. 8(under a desirable condition ).

关 键 词：反演 声波测井 曲线 测井 

分 类 号：P631.814[天文地球—地质矿产勘探]