松辽盆地扶杨油层河道砂体地震识别方法

大庆长垣扶杨油层储层以河道砂岩为主，具有单层厚度薄、横向变化快的特点，利用地震资料准确识别河道砂岩是一个技术难题。频谱分解技术适用于检测薄层和横向上不连续的地质异常体，基于广义S变换的频谱分解技术的分辨率和抗噪性要高于其它频谱分解方法，是河道砂体识别的有效技术。

Seismic recognition method of channel sand body of Fuyang pay zone in Songliao Basin

Channel sandstone is dominated in Fuyang pay zone of Daqing Placanticline,characterized by single bed thin and changes rapidly in horizontal.Using seismic data to accurately recognize the channel sandstone is a difficult technical problem.Spectral decomposition technique is suitable to detect thin bed and uncontinuous geologic anomalous body in horizontal.Since the resolution and anti-noise of the spectral decomposition technique of generalized S transform is higher than other spectral decomposition method, the spectral decomposition method is an effective technique for recognizing channel sand body.