| 流体替代的地震反射振幅特征分析 |
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| 引用本文： | 汪勇,阳和华,桂志先.流体替代的地震反射振幅特征分析[J].物探与化探,2012,36(6):991-995. |
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| 作者姓名： | 汪勇 阳和华 桂志先 |
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| 作者单位： | 1. 中国地质大学地球物理与空间信息学院,湖北武汉430074;长江大学油气资源与勘探技术教育部重点实验室,湖北荆州434023
2. 长江大学油气资源与勘探技术教育部重点实验室,湖北荆州,434023 |
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| 基金项目： | 国家“十一五”重大科技专项课题(2008ZX050000230401) |
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| 摘 要： | 在油田的开发阶段,注水或注气开采会引起储层物性的变化,同时储层所含流体也会发生改变,这就为时移地震监测提供了可能.笔者主要基于Gassmann方程,详细地论述了孔隙流体替代储层地震波速度和密度变化规律,并且根据预测的结果建立了含水饱和度变化地震地质模型.最后通过对该模型的振幅类地震属性分析,对地震属性进行了优选,找到了适合本工区时移地震监测的敏感性振幅属性,为预测工区剩余油的分布提供了基础.
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| 关 键 词： | 时移地震 Gassmann方程 含水饱和度 地震属性 |
AN ANALYSIS OF THE AMPLITUDE CHARACTERISTICS OF SEISMIC REFLECTION DURING FLUID REPLACING |
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| WANG Yong,YANG He-hua,GUI Zhi-xian.AN ANALYSIS OF THE AMPLITUDE CHARACTERISTICS OF SEISMIC REFLECTION DURING FLUID REPLACING[J].Geophysical and Geochemical Exploration,2012,36(6):991-995. |
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| Authors: | WANG Yong YANG He-hua GUI Zhi-xian |
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| Institution: | 1.Institute of Geophysics and Geomatics,China University of Geosciences,Wuhan 430074,China;2.Oil and Gas Resources and Exploration of Ministry of Education Key Laboratory,Yangtze University,Jingzhou 434023,China) |
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| Abstract: | In the oil field development stage, water or gas injection mining will change reservoir properties and the fluid inside the res- ervoir,which may provide a possiblity for time-lapse seismic monitoring. Mainly based on Gassmann equation, the authors discussed in detail the variation regularity of seismic velocity and density when the reservoir pore fluid is replaced, and established a seismic geolog- ical model for water saturation variation according to the forecast resutt. Through anatyzing and optimizing the amplitude attributes ex- tracted from the model, the sensitive time-lapse seismic attributes suitable for this area was finally found. The result provides a basis for predicting the distribution of remaining oil. |
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| Keywords: | time-lapse seism Gassmann equation saturation of water seismic attribute |
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