双谱速度分析下的地层压力预测

摘要

In order to improve the accuracy of pressure prediction relying on seismic velocity spectrum, the authors combine the principal component analysis (PCA) criterion in bispectral velocity scanning to pick up seismic velocity, which can reduce the errors by the increase of reflecting layers and offeset in data scanning. Applied the velocity and time parameters in the Fillippone formula, the pressure prediction was improved in accuracy.%为提高依靠地震速度谱数据进行压力预测的准确度,提出将主成分分析(PCA)判断准则应用到双参数速度扫描中来拾取地震速度,从而减少扫描数据时随着反射层数的增加及偏移距的增大而造成的偏差,并将所得速度参数及时间参数应用到改进的Fillippone公式中,改善了压力预测的精度.