| 原生透镜状砂岩油藏成藏过程一维数值模拟 |
| |
| 引用本文： | 解国军,金之钧.原生透镜状砂岩油藏成藏过程一维数值模拟[J].地球科学,2008,33(1):97-106. |
| |
| 作者姓名： | 解国军 金之钧 |
| |
| 作者单位： | [1]中国石化石油勘探开发研究院,北京100083 [2]中国石油大学资源与信息学院,北京102249 |
| |
| 基金项目： | 胜利油田博士后研究基金 |
| |
| 摘 要： | 为了了解原生透镜状砂岩油藏的成藏过程和控制因素,基于变形多孔介质两相流动的基本原理,综合考虑地层在沉降过程中温度和压力的变化、砂岩体和围岩物性的变化、石油的生成以及岩石中孔隙流体物性变化等情况,应用数值方法模拟这类油藏在一维条件下成藏的整个过程.通过成藏过程模拟和分析,认为超压是推动流体整体运移的动力,而对处于生油围岩中的原生透镜状砂岩油藏,围岩和砂体间形成的毛管压力差异才是驱动石油在原生透镜状砂岩油藏中聚集的根本动力.在这类砂岩油藏成藏的过程中,砂体的油相压力要低于与其相邻的围岩中的油相压力,使得砂体成为石油的一个相对的低势区.原生透镜状砂岩油藏的成藏是由力平衡和物质平衡两种基本作用控制的成藏过程,石油生成和供应量以及砂体和围岩的油相势差决定了这类油藏的含油性.
|
| 关 键 词： | 透镜状砂岩油藏 成藏过程 数值模拟 多孔介质 两相流动 毛管压力 |
| 文章编号： | 1000-2383（2008）01-0097-10 |
| 收稿时间： | 2007-02-16 |
| 修稿时间： | 2007年2月16日 |
One Dimensional Numerical Simulation of Oil-Trapping Process of Original Lentoid Sand Reservoir |
| |
| XIE Guo-jun,JIN Zhi-jun.One Dimensional Numerical Simulation of Oil-Trapping Process of Original Lentoid Sand Reservoir[J].Earth Science-Journal of China University of Geosciences,2008,33(1):97-106. |
| |
| Authors: | XIE Guo-jun JIN Zhi-jun |
| |
| Abstract: | To find out the mechanism and controlling factors of the original lentoid sand reservoir,its oil-trapping process is numerically simulated on one dimensional condition based on the theory of two-phase fluid flow in compactable porous media,taking into account of its various related processes and parameters. It is ascertained that overpressure is the force of gross fluid flow out of the source rock rather than the force of oil accumulation in the lentoid sand reservoir. The fundamental force for oil accumulation in the lentoid sand reservoir is the difference of capillary pressures built up between the source rock and the reservoir. The potential of oil phase in lentoid sand reservoir is less than that in the surrounding source rock in the oil-trapping process. The oil trapping process of lentoid sand reservoir is controlled by the principles of potential balance and volume balance. The oil-bearing characteristics of the reservoir are determined by the oil volume provided and the oil phase potential difference between the source rock and the reservoir. |
| |
| Keywords: | lentoid sand reservoir oil-trapping process numerical simulation porous media two-phase fluid flow capillary pressure |
| 本文献已被 维普 万方数据 等数据库收录！ |
