| 砂泥岩储层孔隙度和含水饱和度同步反演 |
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| 引用本文： | 杨培杰.砂泥岩储层孔隙度和含水饱和度同步反演[J].地球物理学报,2018,61(2):673-682. |
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| 作者姓名： | 杨培杰 |
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| 作者单位： | 中石化胜利油田分公司勘探开发研究院, 山东东营 257015 |
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| 基金项目： | 中石化股份有限公司科技项目"基于地质模型的地震资料深度域综合解释技术"（P15057）资助. |
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| 摘 要： | 基于岩石物理和地震反演理论，提出了一种同步反演储层孔隙度和含水饱和度的方法.以岩石物理为基础，建立了砂泥岩储层物性和弹性参数之间定量的关系-Simon模型，以贝叶斯理论为手段，结合不同类型的砂泥岩储层，建立了多信息联合约束的物性参数反演目标函数，并通过蒙特卡罗和遗传算法相结合的思路求解该目标函数，最终得到孔隙度和含水饱和度的同步反演结果.将该方法应用于河道砂和砂砾岩两种不同的砂泥岩储层中，孔隙度和含水饱和度数据的联合应用，进一步减少了储层预测的多解性，为石油地质综合研究提供了更加丰富准确的基础数据.
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| 关 键 词： | 储层物性 岩石物理 Simon模型 孔隙度 含水饱和度 同步反演 |
| 收稿时间： | 2016-12-20 |
Porosity and water saturation simultaneous inversion for sand-mudstone reservoir |
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| YANG PeiJie.Porosity and water saturation simultaneous inversion for sand-mudstone reservoir[J].Chinese Journal of Geophysics,2018,61(2):673-682. |
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| Authors: | YANG PeiJie |
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| Institution: | Exploration and Development Research Institute of Shengli Oilfield, SINOPEC, Dongying Shandong 257015, China |
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| Abstract: | The reservoir physical properties estimation from seismic data can be seen as a seismic inversion problem. A joint estimation of porosity and water saturation is proposed that combines rock physics and seismic inversion. A sand-mudstone rock-physics model which named Simon model is established. Simon model provides the link between reservoir properties and seismic velocities. Based on Bayesian theory, a reservoir physical properties inversion objective function is established combining different types of sand-mudstone reservoirs. The objective function is solved by means of Monte Carlo simulation and genetic algorithm, and the porosity and water saturation results are acquired simultaneously. We applied this method to two different types of sand-mudstone reservoir:channel sandstone and sand-conglomerate reservoir. The combined application of porosity and water saturation data further reduces the multiple solutions of reservoir prediction and provides more abundant and accurate basic data for comprehensive research of petroleum geology. |
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| Keywords: | Reservoir physical properties Rock physics Simon model Porosity Water saturation Simultaneous inversion |
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