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AVO属性异常与油气之间存在关系,不同的属性具有不同的物理和地质意义。进行属性分析并研究其与储层参数(含气饱和度、有效厚度、孔隙度等)之间的关系,有助于更好地应用AVO技术对研究区进行含气性预测。从叠前地震CRP道集出发,在对数据处理后得到角度道集并进行AVO反演,提取了多种AVO属性,然后进行属性分析,优选对含气性敏感的属性参数,建立起属性组合与已知井点测井解释厚度值之间的关系,最后运用地质统计学的方法对目的层含气有效厚度进行平面预测。
There is a relationship between AVO property anomaly and oil and gas, and different properties have different physical and geological meanings. The analysis of the properties and the relationship between them and the reservoir parameters (gas saturation, effective thickness, porosity, etc.) are helpful to the better application of AVO technology to predict the gas-bearing of the study area. Based on prestack seismic CRP gathers, we obtain angular gathers and AVO inversion after data processing, extract a variety of AVO attributes, then conduct attribute analysis, optimize gas-sensitive attribute parameters and establish attribute combination And the known well point logging interpretation of the relationship between the thickness of the value, and finally the use of geostatistics method to predict the effective thickness of the gas bearing layer of the plane prediction.