【摘要】 春光区块主要储层为河道砂体,主要特征为砂泥岩薄互层,储层厚度相对较小,纵向上岩性变化快,横向上连通性较差,储层预测难度大。针对此问题,探讨了谱蓝化拓频处理技术在春光区块的应用。春光区块的地震勘探数据经过谱蓝化拓频处理后地震剖面分辨率和主频有所提高,高频弱信号能量强度得到增加,同时基本保持了原始地震勘探数据的信噪比、振幅和时频特性,地震剖面同相轴更精细,能够获得更清晰的目的层段信息。应用结果表明,谱蓝化拓频处理技术解决了该区地震剖面与实钻井地质分层不一致的问题,提高了地震勘探数据识别薄互层的能力,为该区块薄互层砂体的储层预测及油气藏描述提供了可靠的基础数据。更多还原

【Abstract】 The main reservoir of Chunguang Block is the channel sand body,and interbed developed in thin sand shale.Thickness changes fast vertically and connectivity is poor horizontally. So reservoir prediction is difficult. In this paper,the application of spectral blueing frequency broadening technique is discussed. Starting from the principle of spectral blueing technique,the processing flow is introduced. The processed seismic section resolution and frequency are improved,and the energy intensity of high-frequency weak signal is enhanced. Meanwhile,the signal-to-noise ratio,amplitude and time frequency characteristics of original seismic data are basically maintained,and the seismic section phase axis is finer,which can obtain much clearer objective interval information. Through practical application in Chunguang Block,the inconsistency between seismic section and drilling geological layering is solved. It is proved that the new technique can improve recognition of seismic data of thin interbed,which provides reliable basic data for reservoir prediction and hydrocarbon reservoir description of thin interbedded sand body in the block.更多还原