储层追踪某些方法研究和试验

Research and Test on the methods for reservoir tracing

1. 地矿部北京计算中心, 北京 100083;2. 地矿部物化探研究所, 廊坊 102849

Beijing Computer Center, MGMR, Beijing 100083

在地震剖面中, 包含的有关储层和油气信息, 主要体现在波形特征及其变化上。提取储层特征不仅可以追踪储层的几何形态、产状, 甚至可以确定油气水的储存情况。以往提取特征信息的方法以单道信号分析为主, 缺乏严格的理论分析。本文提出了用多元时间序列总体表示地震图, 从中提取振幅比和多元相干系数向量, 将其用于储层追踪, 取得了较好的效果。

Most of the seismic information on reservoirs and hydrocarbon are shown in thc form of waveform features or their variations. Reservoir features are helpful not only in tracing the geometry and the occurrcnce of reservoirs but also in detcrmining the storage of oil, gas and water.The formerly used methods for characteristic information extraction take single-trace signal analysis as main scheme and lack strict theoretical analysis. This paper proposes a method which uses multivariate time sequences to represent the whole seismogram. From it the amplitude ratio and the vector of multivariate coherent coefficient are extractcd and used in tracing reservoirs, which results in a satisfactory result.