横观各向同性岩石力学-化学-损伤耦合有限元分析

王永亮; 庄茁; 柳占立; 杨恒林

doi:10.6052/j.issn.1000-4750.2016.04.0287

横观各向同性岩石力学-化学-损伤耦合有限元分析

doi: 10.6052/j.issn.1000-4750.2016.04.0287

1.
清华大学航天航空学院, 应用力学教育部重点实验室, 北京 100084;
2.
中国石油集团钻井工程技术研究院, 北京 100195

基金项目: 国家自然科学基金项目（11372157，11302115，51608301）；教育部博士学科点专项科研基金项目（20120002110075）；全国优秀博士学位论文作者专项资金项目（201326）；中国博士后科学基金项目（2015M571030，2016M601170）

详细信息

作者简介:
庄茁(1952-),男,辽宁沈阳人,教授,博士,中国力学学会常务理事、北京力学会理事长,从事非线性有限元和断裂力学研究(E-mail:zhuangz@tsinghua.edu.cn);柳占立(1981-),男,河南周口人,副教授,博士,从事非线性有限元和断裂力学研究(E-mail:liuzhanli@tsinghua.edu.cn);杨恒林(1973-),男,辽宁抚顺人,高工,博士,从事石油工程岩石力学研究(E-mail:yhldri@cnpc.com.cn).

通讯作者:
王永亮(1985-),男,河北唐山人,博士后,从事非线性有限元和结构工程研究(E-mail:wangyongliang@tsinghua.edu.cn).

中图分类号: TU452;TE37
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出版历程
- 收稿日期: 2016-04-20
- 修回日期: 2016-10-25
- 刊出日期: 2017-09-25

FINITE ELEMENT ANALYSIS OF TRANSVERSELY ISOTROPIC ROCK WITH MECHANICAL-CHEMICAL-DAMAGE COUPLING

1.
Applied Mechanics Laboratory, School of Aerospace Engineering, Tsinghua University, Beijing 100084, China;
2.
Drilling Research Institute, China National Petroleum Corporation, Beijing 100195, China

摘要

摘要: 该文基于层理性岩石的水化作用和连续损伤特性，建立力学-化学-损伤耦合的有限元（FEM）求解方法，开展含钻井孔岩石的井壁应力和围岩损伤演化分析。该文发展横观各向同性Biot本构关系，采用Weibull分布函数表征岩石的非均质性；考虑水化作用引起的损伤，结合当前应力状态的应力损伤得到损伤张量，对弹性模量和渗透率进行损伤分析，实现层理性岩石在水化和荷载作用下的连续损伤演化，形成一套渗流-应力-化学-损伤（HMCD）耦合分析方法。该文给出数值算例，将含损伤横观各向同性模型用于研究层理性岩石的水化特性，表明岩石的非均匀性和水化作用对井壁应力解答具有重要影响，该有限元求解方法可对岩石水化、损伤进行可靠、有效的数值分析。
- 有限元 /
- 层理性岩石 /
- 连续损伤 /
- Weibull分布 /
- 渗流-应力-化学-损伤耦合
Abstract: Based on the hydration and continuum damage characteristics of laminated rock, the finite element method (FEM) considering mechanical-chemical-damage coupling is studied, which can be used to analyze the stresses on wellbore and the damage evolution for rock reservoirs. A transverse-isotropic-Biot constitutive relationship is developed, in which Weibull distribution is used effectively to simulate petrophysical heterogeneity characteristics. Regarding the hydration behavior as damage and combining stress damage in a current stress state, an innovative damage tensor is derived for the damage analysis of elastic modulus and permeability. Then the finite element analysis (FEA) technology considering hydraulic-mechanical-chemical-damage (HMCD) coupling is proposed for the damage evolution by hydration and loading. Numerical examples are presented to show the effectivity and reliability of the proposed technology for the hydration characteristic analysis of laminated rock, furthermore to demonstrate the heterogeneous and hydration effect for the stress solution on wellbore.
- FEM /
- laminated rock /
- continuous damage /
- Weibull distribution /
- hydraulic-mechanical-chemical-damage coupling

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参考文献(18)

[1]	庄茁, 柳占立, 王永亮. 页岩油气高效开发中的基础理论与关键力学问题[J]. 力学季刊, 2015, 33(1):8-17. Zhuang Zhuo, Liu Zhanli, Wang Yongliang. Fundamental theory and key mechanical problems of shale oil gas effective extraction[J]. Chinese Quarterly of Mechanics, 2015, 33(1):8-17. (in Chinese)
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横观各向同性岩石力学-化学-损伤耦合有限元分析

doi: 10.6052/j.issn.1000-4750.2016.04.0287

通讯作者:
王永亮(1985-),男,河北唐山人,博士后,从事非线性有限元和结构工程研究(E-mail:wangyongliang@tsinghua.edu.cn).

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FINITE ELEMENT ANALYSIS OF TRANSVERSELY ISOTROPIC ROCK WITH MECHANICAL-CHEMICAL-DAMAGE COUPLING

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留言板

横观各向同性岩石力学-化学-损伤耦合有限元分析

doi: 10.6052/j.issn.1000-4750.2016.04.0287

通讯作者: 王永亮(1985-),男,河北唐山人,博士后,从事非线性有限元和结构工程研究(E-mail:wangyongliang@tsinghua.edu.cn).

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出版历程

FINITE ELEMENT ANALYSIS OF TRANSVERSELY ISOTROPIC ROCK WITH MECHANICAL-CHEMICAL-DAMAGE COUPLING

计量

出版历程

目录

通讯作者:
王永亮(1985-),男,河北唐山人,博士后,从事非线性有限元和结构工程研究(E-mail:wangyongliang@tsinghua.edu.cn).