利用地震波主参数预测岩性和油气

Prediction of lithology and hydrocarbon accumulation with seismic principal parameters

中国石化集团新星公司西北石油局规划设计研究,新疆乌鲁木齐830011

The Planning Institute of Northwest Petroleum Bureau, SINOPEC Star Petroleum Exploration and Production Company, Urumchi 830011, China

地震信号的频谱特征随时间的变化规律或随横向沿层的变化规律, 是研究地层结构和岩相变化的重要信息。把时间域信息和频率域信息联系起来进行分析的方法, 称为时频分析法。利用地震波主参数进行时频分析的方法称为时频域地震波主参数分析法 (简称为地震波主参数分析法), 这是近几年发展起来的新方法。这种方法是利用地震波主参数从宏观和微观上研究地质构造和地层结构的变化, 从而达到岩性和油气预测的目的。

The variability of the spectra of seismic signals with time or lateral variations of a formation is the important information about formation structure and lithologic changes. The method that relates temporal information to spectral information is called temporal frequency analysis. The method that uses seismic principal parameters in temporal frequency analysis is called temporal frequency seismic principal parameter method (or called seismic principal parameter method for short), which is a method developed recently. This method studies the geologic structure and stratal configuration with seismic principal parameters, and ultimately predicts the lithology and hydrocarbon accumulation. Satisfactory results have been reached in the prediction of lithology and hydrocarbon distribution for the Triassic Zhongyou Formation with the results of detailed seismic interpretation and integrated formation research.