| 礁滩储层内部孔隙结构模型模拟与孔隙度预测 |
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| 引用本文： | 蒋炼,文晓涛,贺振华,黄德济.礁滩储层内部孔隙结构模型模拟与孔隙度预测[J].地球物理学报,2011,54(6):1624-1633. |
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| 作者姓名： | 蒋炼 文晓涛 贺振华 黄德济 |
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| 作者单位： | 成都理工大学油气藏地质及开发国家重点实验室,成都 610059 |
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| 基金项目： | 国家自然科学基金青年基金项目，国家自然科学基金“石油化工联合基金”重点项目 |
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| 摘 要： | 地下岩石是由岩石基质和孔隙流体组成的双相介质,其有效弹性参数受岩石基质、孔隙度、孔隙结构及孔隙流体的影响,因此为了得到孔隙度与岩石有效弹性参数之间的关系,必须消除其他因素对孔隙度的影响.本文首先引进等效体的概念和Eshelby椭球包体裂缝理论,然后在合理的假设前提下,运用Gassman流体替换方程,推导并建立了生物礁滩...
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| 关 键 词： | 生物礁滩储层 孔隙结构 Gassman方程 岩石物理 孔隙度预测 |
| 收稿时间： | 2010-09-15 |
Pore structure model simulation and porosity prediction in reef-flat reservoir |
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| JIANG Lian,WEN Xiao-Tao,HE Zhen-Hua,HUANG De-Ji.Pore structure model simulation and porosity prediction in reef-flat reservoir[J].Chinese Journal of Geophysics,2011,54(6):1624-1633. |
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| Authors: | JIANG Lian WEN Xiao-Tao HE Zhen-Hua HUANG De-Ji |
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| Institution: | State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu 610059,China |
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| Abstract: | Rock in underground composed of rock matrix and pore fluid is two-phase medium, the effective elastic parameters of which are influenced by rock matrix, pore structure and pore fluid. Therefore, in order to get the relationship between porosity and effective elastic parameters of rock, the influence of the other factors must be removed. Based on the basic theory of rock physics and test data, the paper proposes the concept of equivalent volume and utilizes the Eshelby ellipsoid xenoliths fracture theory. In the case of reasonable assumption, the Gassman equation is applied to deduce and establish the equation between porosity and related factors including the compressibility of saturated rock (no drainage),the compressibility of rock matrix, pore aspect ratio describing pore shape and parameter m,and simulate properly pore structure in reef-flat reservoir, which has strong heterogeneity. At the last, the practical data proves that the formula between porosity and elastic parameters we build is more effective to predict porosity in reef-flat reservoir. |
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| Keywords: | Reef-flat reservoir Pore structure Gassman equation Rock physics Prediction of porosity |
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