煤岩储气层岩石蠕变特性与本构模型研究

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摘要与一般煤岩相比，裂隙发育是煤岩储气层的主要物理特征，其结构较为软弱，在复杂地应力条件下易产生蠕变破坏，往往造成煤层气开采中钻井的破坏失稳。为探讨储气层煤岩钻井壁的蠕变失稳规律，采用美国RTR–1000型三轴岩石力学测试系统对储气层煤岩进行系统的单轴压缩试验。利用饱依丁–汤姆逊体与宾汉姆体，建立储气层煤岩蠕变模型，并通过拟合得到蠕变方程中的各个参数。根据储气层煤岩在不同载荷条件下的单轴压缩试验结果对蠕变模型进行验证。结果表明，所提出的储气层煤岩蠕变模型能很好地描述各蠕变阶段的变形特性，尤其是衰减阶段与稳定蠕变阶段，并能很好地反映蠕变的长期强度。同时，将煤岩蠕变特性与钻井方式相结合，提出煤层钻井液的优选思路，对保持煤岩钻井壁稳定、有效保护储集层以及高效安全建井等具有重要的实际意义。

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	范翔宇1
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	张千贵2
	艾巍3
	夏宏泉2
	何传亮4
	李枝林5

关键词 ：岩石力学, 储气层, 蠕变物性, 本构模型

Abstract：Compared with normal coal，fracture development is the main physical characteristics of coal in coal bed gas reservoir，its structure is very complicated，and its easy to be damaged under geostress，always leads to the failure and instability of drilling during the exploitation process of coal bed gas. In order to explore the law of creep instability of borehole wall in coal bed gas reservoir，the writer adopted the American RTR–1000 triaxial rock mechanical test system to test the uniaxial creep law of coal in coal bed gas reservoir. Combined the Poyting-Thomson model with Bingham model，a creep model of coal is builted in coal bed gas reservoir and each parameter of creep equation through fitting is achieved. The creep model has been verified according to the uniaxial creep test results of coal in coal bed gas reservoir under different load conditions. The results show that the creep model of coal in coal bed gas reservoir can describe the deformation properties of each creep stage well，especially the decline stage and steady creep stage，and it can reflect the long-term strength of creep well. At the same time，combining the coal creep characteristics with the selection of drilling modes，an optimal selection idea of drilling liquid for coal bed gas reservoir has been put forward，which is significant and realistic meaning to maintain the stability of coal drilling，protect reservoir effectively and build drilling with high efficiency and safety.

Key words： rock mechanics coal bed gas reservoir creep property constitutive model

引用本文:

范翔宇1，2，张千贵2，艾巍3，夏宏泉2，何传亮4，李枝林5. 煤岩储气层岩石蠕变特性与本构模型研究[J]. 岩石力学与工程学报, 2013, 32(s2): 3732-3739.
FAN Xiangyu1，2，ZHANG Qiangui2，AI Wei3，XIA Hongquan2，HE Chuanliang4，LI Zhilin5. RESEARCH ON CREEP PROPERTY AND CONSTITUTIVE MODEL OF ROCK IN COAL BED GAS RESERVOIR. , 2013, 32(s2): 3732-3739.

链接本文:

https://rockmech.whrsm.ac.cn/CN/Y2013/V32/Is2/3732

[1]	SHAO JF，ZHU QZ，SU K. Modeling of creep in rock materials in terms of material degradation[J]. Computers and Geotechnics，2003，30(7)：549-555.
[2]	GASC-BARBIER M，CHANCHOLE S，BEREST P. Creep behavior of bure clayey rock[J]. Applied Clay Science，2004，26(1/4)：449-458.
[3]	MARANINI E，BRIGNOLI M. Creep behaviour of a weak rock[J]. Experimental Characterization International Journal of Rock Mechanics and Mining Sciences，1999，36(1)：127-138.
[4]	PUSCH R. Comprehensive pock engineering(principles，practices，and projects)：fundamentals[M]. Oxford：Pergamum，1993：1-90.
[5]	MUNSON DE. Constitutive model of creep in rock salt applied to underground room closure[J]. International Journal of Rock Mechanics and Mining Sciences，1997，34(2)：233-247.
[6]	JIN F，ZHANG CH，WANG G，et al. Creep modeling in excavation analysis of a high rock slope[J]. JournalofGeotechnical and Geoenvironmental Engineering，2003，129(9)：849-847.
[7]	高小平，杨春和，吴文，等. 盐岩蠕变特性温度效应的实验研究[J]. 岩石力学与工程学报，2005，24(12)：2054-2059.(GAO Xiaoping，YANG Chunhe，WU Wen，et al. Experimental studies on temperature dependent properties of creep of rock salt[J]. Chinese Journal of Rock Mechanics and Engineering，2005，24(12)：2054-2059.(in Chinese))
[8]	尹光志，王登科，张东明，等. 含瓦斯煤岩三维蠕变特性及蠕变模型研究[J]. 岩石力学与工程学报，2008，27(增1)：2631-2636.(YIN Guangzhi，WANG Dengke，ZHANG Dongming，et al. Research on triaxial creep properties and creep model of coal containing gas[J]. Chinese Journal of Rock Mechanics and Engineering，2008，27(Supp.1)：2631-2636.(in Chinese))
[9]	陈绍杰，郭惟嘉，杨永杰. 煤岩蠕变模型与破坏特征试验研究[J]. 岩土力学，2009，30(9)：2595-2598.(CHEN Shaojie，GUO Weijia，YANG Yongjie. Experimental study of creep model and failure characteristics of coal[J]. Rock and Soil Mechanics，2009，30(9)：2595-2598.(in Chinese))
[10]	曹树刚，鲜学福. 煤岩蠕变损伤特性的实验研究[J]. 岩石力学与工程学报，2001，20(6)：817-821.(CAO Shugang，XIAN Xuefu. Testing study on the characteristics of creep and damage of coal and other rocks[J]. Chinese Journal of Rock Mechanics and Engineering，2001，20(6)：817-821.(in Chinese))
[11]	尹光志，赵洪宝，张东明. 突出煤三轴蠕变特性及本构方程[J]. 重庆大学学报，2008，31(8)：946-950.(YIN Guangzhi，ZHAO Hongbao，ZHANG Dongming. Characteristics of triaxial creep and constitutive relationship of outburst coal[J]. Journal of Chongqing University，2008，31(8)：946-950.(in Chinese))
[12]	王维忠，尹光志，王登科，等. 三轴压缩下突出煤黏弹塑性蠕变模型[J]. 重庆大学学报，2010，33(1)：99-103.(WANG Weizhong，YIN Guangzhi，WANG Dengke，et al. A viscoelasto-plastic creep model of outburst prone coal under triaxial compression[J]. Journal of Chongqing University，2010，33(1)：99-103.(in Chinese))
[13]	何峰，王来贵，王振伟，等. 煤岩蠕变-渗流耦合规律实验研究[J]. 煤炭学报，2011，36(6)：930-933.(HE Feng，WANG Laigui，WANG Zhenwei，et al. Experimental study on creep-seepage coupling law of coal(rock)[J]. Journal of China Coal Society，2011，36(6)：930-933.(in Chinese))
[14]	尹光志，张东明，何巡军. 含瓦斯煤蠕变实验及理论模型研究[J]. 岩土工程学报，2009，31(4)：528-532.(YIN Guangzhi，ZHANG Dongming，HE Xunjun. Creep experiment and theoretical model of gas-containing coal[J]. Chinese Journal of Geotechnical Engineering，2009，31(4)：528-532.(in Chinese))
[15]	王登科，尹光志，张东明. 含瓦斯煤岩三维蠕变模型与稳定性分析[J]. 重庆大学学报，2009，32(11)：1316-1320.(WANG Dengke，YIN Guangzhi，ZHANG Dongming. Triaxial creep model and its stability analysis of gas-containing coal[J]. Journal of Chongqing University，2009，32(11)：1316-1320.(in Chinese))
[16]	曹树刚，边金，李鹏. 岩石蠕变本构关系及改进的西原正夫模型[J].岩石力学与工程学报，2002，21(5)：632-634.(CAO Shugang，BIAN Jin，LI Peng. Rheological constitutive relationship of rocks and a modified model[J]. Chinese Journal of Rock Mechanics and Engineering，2002，21(5)：632-634.(in Chinese))
[17]	王维忠，尹光志，赵洪宝，等. 含瓦斯煤岩三轴蠕变特性及本构关系[J]. 重庆大学学报，2009，32(2)：197-201.(WANG Weizhong，YIN Guangzhi，ZHAO Hongbao，et al. Triaxial creep characteristics andconstitutive relation of gas-containing coal [J]. Journal of ChongqingUniversity，2009，32(2)：197-201.(in Chinese))
[18]	何学秋. 含瓦斯煤岩流变动力学[M]. 徐州：中国矿业大学出版社，1995：109-112.(HE Xueqiu. Rheological dynamics of coal or rock containing gas[M]. Xuzhou：China University of Mining and Technology Press，1995：109-112.(in Chinese))
[19]	蔡美峰，何满潮，刘东燕. 岩石力学与工程[M]. 北京：科学出版社，2002：199-200.(CAI Meifeng，HE Manchao，LIU Dongyan. Rockmechanics and engineering[M]. Beijing：Science Press，2002：199-200.(in Chinese))
[20]	张新民，庄军，张遂安.中国煤层气地质与资源评价[M]. 北京：科学出版社，2002：12-30.(ZHANG Xinmin，ZHUANG Jun，ZHANG Suian. The geologicaland resourcesevaluationof coal bed gasin China[M]. Beijing：Science Press，2002：12-30.(in Chinese))
[21]	范翔宇. 油气钻井地质[M]. 重庆：重庆大学出版社，2010：263-300.(FAN Xiangyu.Thedrilling geology of oil and gas[M]. Chongqing：Chongqing University Press，2010：263-300.(in Chinese))