| 含天然微裂缝变形介质油藏数值模拟方法 |
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| 引用本文： | 程林松,贺立湘,李春兰,牛光海.含天然微裂缝变形介质油藏数值模拟方法[J].中国石油大学学报(自然科学版),2001,25(5). |
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| 作者姓名： | 程林松 贺立湘 李春兰 牛光海 |
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| 作者单位： | 1. 石油大学石油天然气工程学院,
2. 胜利油田有限公司滨南采油厂, |
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| 基金项目： | 国家重点基础研究项目 (G19990 2 2 5 0 9) |
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| 摘 要： | 在微裂缝油藏开发过程中 ,油藏流体压力的上升或下降会导致微裂缝的张开或闭合 ,油藏的绝对渗透率随之发生变化 ,而且微裂缝的存在使油藏渗透率呈现较强的各向异性 ,从而影响油藏的开发。针对这些特性 ,分析了微裂缝的存在对油藏绝对渗透率大小和主轴方向的影响 ,建立了含天然微裂缝低渗透油藏的三维、三相数学模型及数值模拟模型 ,并在此基础上研制出了油藏模拟软件。运用该软件进行了典型油藏单元的实例计算 ,结果表明 ,开采初期微裂缝油藏日产油量比常规油藏高 ,而后期则比常规油藏低 ,且采出程度总比常规油藏高
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| 关 键 词： | 微裂缝 变形介质 低渗透油藏 数学模型 数值模拟 |
A NEW METHOD OF NUMERICAL SIMULATION FOR NATURALLY MICROFRACTURED LOW-PERMEABILITY RESERVOIR |
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| CHENG Lin-song,et al..A NEW METHOD OF NUMERICAL SIMULATION FOR NATURALLY MICROFRACTURED LOW-PERMEABILITY RESERVOIR[J].Journal of China University of Petroleum,2001,25(5). |
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| Authors: | CHENG Lin-song |
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| Abstract: | The effect of microfractures on the development of low-permeability reservoir is studied. A three-dimension and three-phase mathematical model is established to describe the reservoir containing microfractures, and a new simulator is developed. The software is applied to study the production of a typical unit. It is confirmed that the permeability of micro-fractured reservoir varies with the reservoir pressure. A mathematical model for this kind of reservoir is developed with consideration of these characters. The software is tested to be reliable by comparing its result with that of a commercial simulation software. In a typical injection-production unit, the software is applied to study the effect of microfracture. Some results are obtained and investigated. |
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| Keywords: | microfracture anisotropy low-permeability reservoir mathematical model numerical simulation |
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