各向异性弹性孔隙介质中的热-流-变形耦合模型.pdfVIP

Vol. 35 No.4 兰州理工大学学报 第 35 卷第4 期 2009 年8 月 Journal of Lanzhou University of Technology Aug.2009 文章编号: 1673-5196(2009)04-{)070-04 各向异性弹性孔隙介质中的热-流-变形搞合模型 陈成意，宋修海 (青岛理工大学建设工程监理咨询公司，山东青岛 266033) 摘要g 研究微小孔隙介质中应变导致渗透率各向异性的问题.采用有限单元法综合分析处理储层变形一渗流一热 传导精合模型与应变导致渗透率变化模型，并用该方法分析弹性多孔介质的二维非等温变化单相渗流的精合问 题.对比结果表明，应变导敦的渗透率变化模型能有效反映蒸汽注入引起的岩层各向膨胀，与热采过程中油藏的实 际情况更吻合. 关键谓z 热-流-变形精合模型z 储层F 各向异性渗透率;有限元模拟 中图分类号:TE3 文献标识码:A Coupled models of heat-f1 ow-deformation for porous medium with anisotropical elasticity CHEN Cheng-yi , SONG Xiu-hai Proj田t Supervision and Consultation Comp皿y， Qingdao Techni四1 University , Qingdao 266033 , China) Abstract: A problem of strain-induced anisotropy of permeability in media with minute porosity was in- vestigated. A coupled model of deformation-flow-heat transfer of storing stratum and a model of strain-in- duced permeability variation were comprehensively analyzed and processed with finite element method and it was also used to analyze two-dimensional non-isothermal single-phase percolation in elastic porous media. Comparative result showed that the strain-induced permeability model could effectively reflect mul- tidirectional expansion of strata induced by steam injection , and it was much more consistent with the actu- al situation of oil reservoir. Key words: coupled model of heat-flow-deformation; storing strata; anisotropic permeability; finite ele- ment simulation 向同性或为对角张量.由于储层的复杂性，建立在 受成岩沉积作用的控制及后期地层活动的影 .FDM 数值程序上的储层地质力学藕合模型是不切 响，油气储层渗透率往往表现出各向异性的特征. Wong[l] 采用薄膜成像方法分析未受扰动和剪切破 实际的.后来