首页 | 本学科首页   官方微博 | 高级检索  
     

致密油藏有限元数值模拟
引用本文:张允,薛亮. 致密油藏有限元数值模拟[J]. 科技导报(北京), 2012, 30(10): 39-42. DOI: 10.3981/j.issn.1000-7857.2012.10.005
作者姓名:张允  薛亮
作者单位:中国石油大学(华东)石油工程学院,山东青岛 266555
摘    要: 目前数值模拟方法均基于达西渗流,无法对致密油藏非达西渗流进行有效模拟。致密油藏内在复杂,为实现致密油藏非达西渗流的科学模拟,建立了油水2相微可压缩非达西流的油藏数值模拟数学模型。同时考虑到致密油藏渗透率低、非均质性强的特点并兼顾模拟精度采用有限单元法进行离散,从而建立了有限元数值模型,形成了新的致密油藏数值模拟方法,最后将该方法进行实例检验,验证了方法的正确性。

关 键 词:致密油藏  非达西渗流  有限元  数值模拟  
收稿时间:2012-02-10

Finite Element Numerical Simulation for Tight Reservoirs
ZHANG Yun,XUE Liang. Finite Element Numerical Simulation for Tight Reservoirs[J]. Science & Technology Review, 2012, 30(10): 39-42. DOI: 10.3981/j.issn.1000-7857.2012.10.005
Authors:ZHANG Yun  XUE Liang
Affiliation:School of Petroleum Engineering, China University of Petroleum, Qingdao 266555, Shandong Province, China
Abstract:The fluid flow is non-Darcy flow in a tight reservoir. A startup pressure gradient is necessary for the flow in the tight reservoir porous media. The numerical simulation technology and software are mostly based on the Darcy seepage and could not effectively simulate the non-Darcy flow for tight reservoirs. In this paper, considering the complexity of the tight reservoir, the non-Darcy flow and the nonlinear characteristics, the oil-water two-phase compressible flow continuity equation, the motion equation, the state equation and the auxiliary equation are derived, to establish the oil-water two-phase non-Darcy flow mathematical model for the reservoir. The startup pressure gradient is considered in this model. The model is discretized for the low permeability and the strong heterogeneity in the tight reservoir with the finite element to be applied to complicated boundaries, high order differential equations, and weak grid orientations, with a high calculation precision. The numerical solution equation for saturation and pressure is obtained. The method is verified by examples.
Keywords:tight reservoir  non-Darcy flow  finite element  numerical simulation  
点击此处可从《科技导报(北京)》浏览原始摘要信息
点击此处可从《科技导报(北京)》下载全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号