摘要
在油气勘探中，成功预测河流相是比较困难的。用地震资料的分频信息进行薄层砂体预测，在油气勘探中逐步得到应用。它是通过傅立叶变换，把时间域的地震数据转变为频率域的切片，从而得出地震数据的多个频率信息，通过对多个频率域的信息进行分析，结合平面资料对储层进行综合分析研究。应用分频信息预测砂体效果良好，这种方法在理论上有充分的依据，对薄层的预测不但突破了地震分辨率的极限，而且在实际应用中也得到了很好的验证。借助分频技术对河道砂体进行预测，可大大提高对河道这类薄储层的勘探精度。
It is difficult to successfully predict fluvial facies and thin bed sand body. During the exploration of hydrocarbon, the predication with frequency division information of seismic data has been gradually applied. Multifrequency information can be obtained by transforming seismic data in time domain to slice in frequency domain with Fourier＇ s alteration, and then comprehensive analysis is performed in combination with planar data to analyze the information in multi-frequency domain. The method above has fully theoretical foundation with good results of predicting sand body frequency, which can not only break limit of seismic resolution, but also can be verified in actual application. Frequency division technology to predict channel sand may greatly increase the accuracy of prospecting thin beds of channel sand.
出处
《大庆石油地质与开发》
CAS
CSCD
北大核心
2009年第3期126-129,共4页
Petroleum Geology & Oilfield Development in Daqing
关键词
分频技术
河道储层
傅立叶变换
三角洲平原相
frequency division technology
channel reservoir
Fourier＇s alteration
delta plain facies
