【摘要】 岩性油气藏勘探对地震资料振幅保真的要求较高,现行的处理方法在此方面缺乏相应的评价手段。针对该问题,提出了岩性油气储层保幅处理评价准则,以指导处理方法及参数的优选,建立了保幅性较高的处理流程,为后续进行地震波属性提取或AVA分析和波阻抗反演,并与岩石物理、地质、测井等先验知识相结合,进行岩性储层的描述和刻画提供相对保真的道集资料。在高邮凹陷地区的实际应用表明,该方法能够提高处理成果的保幅性,为岩性油气藏的识别奠定了基础。更多还原

【Abstract】 The exploration of lithologic reservoir has high requirements for the preserved- amplitude of seismic data,and the current processing methods have no corresponding evaluation means in the aspect. Aiming at the problem,the evaluation criteria of preserved- amplitude processing for lithologic reservoir was proposed to guide the optimization of the process methods and parameters. The process flowsheet with high preserved- amplitude was established in order to provide relatively preserved- amplitude gathers for subsequent extracting seismic attributes or AVA analysis and wave impedence inversion,as well as the lithologic reservoir description combined with the prior information of rock physics,geology,and well logging. The application results showed that the method can increase the amplitude preservation of the processed data,and provide a base for the identification of lithologic hydrocarbon reservoirs in Gaoyou Sag,.更多还原