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科技导报  2015 

井震结合精细储层建模方法与实践

DOI: 10.3981/j.issn.1000-7857.2015.19.015, PP. 91-95

Keywords: 井震结合,井震联合标定,储层建模,构造格架,岩性概率体

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Abstract:

融合地震资料与井资料分别在横向和纵向上高密度采样的特点,以中国海上某气田B区块为例,通过井震联合标定,进行精细构造解释,用准确的速度模型搭建了时间域与深度域联系的桥梁;利用地震解释的断层、层位构建储层骨架模型,应用地质统计学协变量方法,以井数据作主变量,地震反演实现统计得到的岩性概率体作为第二变量约束井间插值、外推和模拟,建立砂体展布模型;依靠砂体展布模型约束沉积相建模,在相模型基础上构建物性模型。实践表明,井震结合储层建模研究断层更精确,能够弥补井间信息不足的缺陷,有效降低井间砂体预测的不确定性,提高模型预测精度。

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