三维地震资料拼接中的地震子波处理

Wavelet transform used in the concatenation of 3-D seismic data sets

1. 中国石油股份勘探开发研究院西北分院,甘肃兰州730020;2. 中国科学院地质地球物理研究所,北京100101

1. Northwest Institute of Petro China Research Institute of Petroleum Exploration and Development, Lanzhou 730020,China;2. Dagang Oilfield Company, Tianjing 300280,China

研究区数据是由2个工区的三维地震数据拼接而成,不同工区的三维地震数据在频率、能量强弱和信噪比上都存在着差异,这给地震解释和地震反演带来了困难。而多工区三维地震数据连片处理结果往往使三维地震数据在频率、能量强弱方面失真,很难用于地震反演。因此,提出了基于小波变换的地震子波处理方法,马东唐南油田三维地震数据拼接的效果表明了该方法的有效性。

The data in our work area is composed of two 3-D seismic data sets. The two data sets are different in frequency, amplitude energy, and signal-to-noise ratio, whichmakes data interpretation and seismic inversion difficult to carry out. To concatenate the two data sets while overcome the above-mentioned problems, amethod for wavelet processing is developed based on wavelet transform. The feasibility of themethod is demonstrated by the application inmadong-Tangnan oilfield.