高分辨率处理技术在松辽盆地塔112区块中的应用

Application of High Resolution Processing Technique in Ta112 Field of Songliao Basin

松辽盆地中浅层河道砂体单层厚度小,砂体范围小,砂体的地震响应特征不明显,油藏识别和储层预测的难度大。为此,在塔112区块采用高分辨率拓频处理技术进行地震资料处理。本文从拓频处理技术的原理入手,分析了拓频处理的特点,简要介绍了拓频处理流程中两个重要参数的选取,并通过在塔112工区的实际应用,得到了明显效果,主要体现在:①主频提高、频带拓宽;②合成记录与地震资料吻合率更高。应用结果表明,该方法可以更好地为薄互储层反演、油气藏描述提供可靠的基础资料。

The channel sandbody has small individuall layer in the shallow--middle depth of Songliao Basin. The sandbody size is small, and the characteristics of seismic response to sandbody is unclear feature,making the oil reservoir recognition and prediction is verydifficulty. For that reason , the high resolution processing technique is used in seismic data processing in this region. Starting from the principle of high resolution frequency--broadening processing technique , the paper analyzed the feature of frequency--broadening processing , briefly introduced the selection of two important parameters in high resolution frequency--broadening processing flow. The method achieved significant result after practical application in Ta112 Field , which is in the followings ;（1）improvement of dominant frequency and broadening the frequency band ; （2）the match of synthetic seismogram with seismic data is better ; The application results showed that the method can better provide the reliable basic data for inversion of thin and alternative reservoir and description of gas reservoir.