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Hao Huang R. Chick Wattenbarger Xiuli Gai William P. Brown Owen J. Hehmeyer Jianlin Wang Ted A. Long 《国际流体数值方法杂志》2013,71(6):671-686
In this paper, the geomechanical factors that may affect injection processes in heavy oil recovery are investigated. To accurately capture the geomechanical effects, we employed a numerical formulation that allows fully coupling of nonlinear geomechanical deformation and multicomponent porous media flows. Two salient features of this new coupling formulation are the following: (1) all flow and geomechanical equations are solved implicitly in one single matrix equation, and (2) it allows reuse of matrices from both a traditional fully implicit multicomponent reservoir simulator and a nonlinear geomechanics simulator. The former feature ensures stable coupling between the reservoir flow and geomechanics, and the latter significantly reduces the programming work. Numerical examples are given to demonstrate the accuracy and convergence performance of the new formulation. The proposed formulation is then applied to model injection into heavy oil reservoirs. The numerical investigation revealed that geomechanical factors, such as in situ stress anisotropy and the uneven deformation of reservoir rock and attached impermeable rock, can result in skewed or nonuniform plastic strain and, hence, alter the sweep of the injected fluid. Coupled geomechanics simulation also gives rather different transient pressure response from that of uncoupled simulation. Copyright © 2012 John Wiley & Sons, Ltd. 相似文献
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An axiomatics of geomechanics 总被引:3,自引:0,他引:3
陈正汉 《应用数学和力学(英文版)》1994,15(10):953-964
ANAXIOMATICSOFGEOMECHANICSChenZheng-han(陈正汉)(LagislicalEngineeringUniversity,Chongqing)(ReceivedFeb.21.1994;CommunicatedbyJia... 相似文献
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岩土力学与地下工程结构分析计算的若干进展 总被引:9,自引:0,他引:9
本文扼要介绍了岩土力学和地下工程结构分析计算方面近年来的若干进展,主要只对作者在课题研究中所接触到的一些工作进行综合性阐述,而未求涉猎该一子学科领域中所有问题。本文的主要内容包括:岩土力学学科的若干进展;几种有前景的数值方法;计算机科学在岩土力学与地下工程中的采用和地下结构的抗震动力分析计算研究。 相似文献
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The focus of science and engineering shifts towards smaller length scales. Porous media mechanics has a vital role to play in the translation of microstructural data into macroscopic models of multicomponent systems. As the length scales shrink, more fundamental levels of understanding of natural laws, cause the boundaries between disciplines to blur. In particular, geosciences, polymer sciences and biosciences find a common ground of interest in high specific surface mixtures. 相似文献
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本文的主要目的是开发基于实数编码的杂交遗传算法来识别土体的本构参数。该杂交遗传算法在经典遗传算法框架下开发,融合两个新开发的交叉算子,形成了一个新的杂交策略。为了保持种群的多样性,在算法中采用了一个动态随机变异算子。另外,为了提高算法收敛性,采用了一个基于混沌的局部搜索技术。分别基于室内试验和现场试验,通过识别土的本构参数来测试新算法的搜索能力和搜索效率。为了测试新开发算法的突出表现,特选用5种经典的随机类算法(遗传算法、粒子群算法、模拟退火算法、差分算法和蜂巢算法),分析同样的案例进行比较。结果表明,在收敛速度和最优解的准确度方面,新改进的算法可以很好地处理岩土工程的参数反演。 相似文献
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