共等值线抽道集叠加识别油气水界面方法及其应用

针对在地震剖面上难以识别无显著地震振幅响应的油气水界面这一问题，阐述了解决此难点的共等值线抽道集叠加技术识别油气水界面方法及其应用前提。它基于三维地震波形叠加，通过叠加油气效应，放大由流体变化产生的振幅变化，识别出无显著地震响应的油气水界面。应用此方法，分别识别出具有“平点”的背斜气藏和无“平点”的构造-岩性复合圈闭背斜气藏的油气水界面。对此技术应用效果讨论并总结出共等值线抽道集叠加方法的应用前提。

Method for Pinpointing the Contacts of Oil, Gas and Water by Common Contour Binning Stacking and Its Application

Considering the difficulty of identifying fluid contacts on seismic profiles which have no significant fluid responses,the method and application prerequisites of Common Contour Binning Stacking Technique for Pinpointing Gas-Water,Gas-Oil and Oil-Water Contacts,which is able to tackle the problem mentioned above,was introduced.Common Contour Binning Stacking Method is based on 3D seismic waveform stacking and enhances the amplitude variances resulted from fluid type change in order to identify the fluid contacts which have no significant seismic responses.Through this method,the fluid contacts of anticline gas reservoir which has “flat spot” and structural-lithological trap reservoir that has no “flat spot” have been identified.The application results and effectiveness of Common Contour Binning Stacking Method have been discussed and the application prerequisites have also been summarized.