基于地震属性特征的河流相叠置砂岩储层预测方法  

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

作　　者：井涌泉 栾东肖 张雨晴 陈飞 范廷恩 胡光义 

机构地区：[1]中海油研究总院,北京100028

出　　处：《石油地球物理勘探》2018年第5期1049-1058,共10页Oil Geophysical Prospecting

摘　　要：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。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 wellseismic 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.

关 键 词：河流相 砂岩储层 砂体叠置模式 地震属性 正演模拟 

分 类 号：P631[天文地球—地质矿产勘探]