小波变换在位场数据处理中的应用

Application of the wavelet transform in potential field data processing

1. 西北石油局规划设计院,乌鲁木齐 830011;2. 西北石油局测井站,乌鲁木齐 830011

Research Institute of Northwest China Bureau of Petroleum, Urumqi 830011

小波变换是近年发展起来的一个新的数学分支,在地震勘探中已广泛应用。本文将小波变换引入位场信号处理,以便利用小波分解理论将重磁异常进行分解、滤波、重建,达到提取区域异常和局部异常的目的。尤其是在提取微弱信号中发挥作用,利用滤波提高信噪比。

The wavelet transform is a new branch of mathematics. It has been used extensively in seismicexploration. In the paper,the wavelet transform is applied in potential field data processing to de-compose,filter,and reconstruct the gravity and magnetic anomalies for the purpose of extractingthe regional and local anomalies. Especially,it can play a role in picking up weak anomaly and im-proving the signal-to-noise ratio.