大庆长垣某区块沉积岩石微相识别方法
Well Logging Technology(2018)
Abstract
基于常规测井资料地质信息丰富、分辨率高、纵向连续性强等特点,分析某区块所包含的3种沉积微相曲线特征,提取了光滑度、迂曲度、微电极幅度差、变差方差根、曲线重心、斜率等反映各测井曲线形态和幅度的特征参数,利用逐步判别法建立了沉积微相判别模型;在充分考虑储层“四性”关系影响下,建立基于沉积微相的岩相识别三角形图版.沉积岩石微相识别符合率达到85%以上,为储层参数精确求取及水淹等级精准判别创造了有利条件.
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