A systematic study of fracture parameters effect on fracture network permeability based on discrete-fracture model employing Finite Element Analyses
A systematic study of fracture parameters effect on fracture network permeability based on discrete-fracture model employing Finite Element Analyses
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基于离散裂缝模型的有限元分析裂缝参数对裂缝网络渗透率影响的系统研究
DOI：
10.1016/j.jngse.2015.12.011
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发表时间：
2016
影响因子：
--
通讯作者：
Gong Changcheng
中科院分区：
文献类型：
--
作者：
Liang Bin;Jiang Hanqiao;Li Junjian;Gong Changcheng
由于多孔介质的不连续性，天然裂缝性油藏不同于传统油藏。准确描述渗流规律和定量研究裂缝参数对渗流能力的影响一直是一项复杂而具有挑战性的任务。本文基于离散裂缝模型(DFM)和有限元分析，定量、系统地研究了各种裂缝参数(裂缝方位、裂缝长度、裂缝开度、相交关系及其综合影响)对渗透率的影响。为了全面了解裂缝的内在规律，建立了一系列裂缝模型，并计算了各模型的渗透率。为了进一步了解裂缝的渗流规律，本文还对裂缝的压力分布、流线分布和速度场分布进行了研究。结果表明，平行于主流线的裂缝对渗流过程的贡献较大，裂缝孔径的敏感区间为0.1 mm~0.01 mm，裂缝越长渗透率越高，应避免超长裂缝靠近注水井和采油井。对于离散的裂隙网络，如果相交的裂隙不能作为主流渠道的一部分，这种相交几乎是没有意义的。敏感性分析可以为建立动态渗流模型以及探讨天然裂缝性油藏和其他复杂裂缝性油藏的复杂渗流特征提供指导。
Due to the discontinuity of porous media, naturally fractured reservoirs are different from traditional reservoirs. Accurate description of seepage law and quantitative study of the influence of fracture parameters on flow capabilities have always been a complicated and challenging task. In this paper, the influence of various fracture parameters (i.e. fracture orientation, fracture length, fracture aperture, intersection relationship and their comprehensive influence) on permeability is studied quantitatively and systematically based on the discrete fracture model (DFM) and Finite Element Analyses. A series of fracture models are established to get a comprehensive understanding of the inherent rules and the permeability of each model is calculated. For further insight of the fracture seepage law, the article also conducts research on pressure distribution, streamline distribution and velocity field distribution. Results show that fractures parallel to mainstream line have bigger contribution to seepage process, the sensitivity interval of fracture aperture, in this paper, is 0.1mm-0.01 mm, and longer fracture will generate higher permeability while super long fracture approaching the injector and the producer should be avoided. For the discrete fracture network, if the intersecting cracks cannot serve as part of the mainstream channels, this intersection is almost meaningless. The sensitivity analysis can provide a guidance for modeling DFM as well as probing into the complex flow characteristics in naturally fractured reservoirs and other complex fractured reservoirs.
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影响因子：
--
作者：
Lidong Mi;Hanqiao Jiang;Junjian Li;Tao Li;Yeh Tian
通讯作者：
Lidong Mi;Hanqiao Jiang;Junjian Li;Tao Li;Yeh Tian
DOI：
10.1007/3-540-45467-5_4
发表时间：
2000
期刊：
--
影响因子：
--
作者：
Peter Bastian;Zhangxin Chen;R. Ewing;R. Helmig;H. Jakobs;Volker Reichenberger
通讯作者：
Peter Bastian;Zhangxin Chen;R. Ewing;R. Helmig;H. Jakobs;Volker Reichenberger
DOI：
10.2118/150772-ms
发表时间：
2011
期刊：
--
影响因子：
--
作者：
K. Farayola;M. T. Oluokun;V. O. Adeniyi;O. Fakinlede
通讯作者：
K. Farayola;M. T. Oluokun;V. O. Adeniyi;O. Fakinlede
DOI：
10.2118/167514-ms
发表时间：
2013-08
期刊：
--
影响因子：
--
作者：
K. Farayola;A. Olaoye;A. Adewuyi
通讯作者：
K. Farayola;A. Olaoye;A. Adewuyi
影响因子：
1.9
作者：
Zhongmin Wang;A. Krupnick
通讯作者：
Zhongmin Wang;A. Krupnick