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基于等时地层格架的储层预测——以四川通南巴构造带飞仙关组为例

Keywords: 储层预测,等时地层格架,鲕滩储层,碳酸盐岩,飞仙关组,通南巴构造带

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Abstract:

?碳酸盐岩储层具有埋藏深、地震反射信号弱、非均质性强等特点,因此有效地进行储层预测成为碳酸盐岩油气勘探开发的关键。本文以四川盆地通南巴构造带飞仙关组为主要研究层位,运用海相碳酸盐岩层序地层学及沉积学原理,结合野外露头层序调查和研究区钻井、测井及地震等资料的分析,对通南巴构造带飞仙关组进行了层序地层划分,建立了区域等时层序地层格架。在此基础上,对飞三段储层进行精细标定,明确了飞三段鲕滩储层的地球物理响应特征;并利用高分辨率三维地震成像技术和基于等时地层格架的薄层地震属性分析技术及虚拟现实技术,对飞三段鲕滩储层进行了精细预测。研究结果表明:该区鲕滩储层在平面上主要分布于河坝场构造和马路背构造,而母家梁和黑池梁为储层相对不发育区;储层厚度在河坝场较大,而在马路背相对较小。

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