模型正演技术在油气藏描述中的应用

The application of forward modeling technique in reservoir description

在油气藏描述过程中,常因地震资料的“假象”或“陷阱”而造成解释成果的错误。为此,本文应用模型正演技术研究了速度“陷阱”、水平井的地质层位识别、平点反射及河道砂体和浅层气藏的地震反射波特征,并分别提出了相应的校正和识别方法。文中的应用实例表明,在LHK等地区用此方法识别地下复杂地质体的效果很好。

False appearance and pitfall in seismic data often cause wrong interpretations in reservoir description. The forward modeling technique is used to analyse velocity pitfall, geologic horizon identification from horizontal well data.flat spot reflection,and the reflections from channel sand body and shallow gas reservoir. The corresponding methods for correction and identification are presented here. It is illustrated that this method was successfully used to interpret complicated subsurface geologic bodies in LHK area.