基于地震属性特征的河流相叠置砂岩储层预测方法

根据物源供给与可容纳空间比值，将研究区新近系曲流河相沉积复合砂体叠合模式分为堆叠型、侧叠型以及孤立型，其中堆叠型不甚发育。根据该划分模式，通过单井井震标定及联井小层对比各叠合模式的地震响应特征。通过提取均方根振幅、振幅变化率、平均振幅、有效带宽、弧长、峰值频率、能量半时间等7种属性，将模型试验确定的4类砂岩储层叠置模式，作为地震属性聚类分析的4类预测目标结果，得到NmⅡ-3小层均方根振幅与聚类分析平面图，结合测井资料验证，较准确地预测了砂岩储层叠合分布特征。

Fluvial facies inter-bedded sand reservoir prediction with seismic multi-attributes

Based on the ratio of sediment supply to accommodation space,we divide Neogene meander fluvial facies sedimentary sand bodies in the target area into the following inter-bedded types:superposition type,side-superposition type,and isolated type.Then we compare seismic response characteristics of the different type sand bodies with well-seismic calibration and substratum correlation.Finally we conduct the seismic attribute clustering analysis of these type sand bodies with 7 sensitive seismic attributes:RMS amplitude,various amplitude,mean amplitude,effective bandwidth,arc length,peak frequency,and energy half time.So we obtain RMS amplitude and a seismic attribute clustering plan of the Layer Nm Ⅱ-3.The logging data proves that our approach can accurately predict this kind of fluvial facies inter-bedded sand reservoirs.