中间主应力与层理方向对页岩力学和渗透特性影响的试验研究

doi:10.13722/j.cnki.jrme.2016.1451

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (2957 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要为探讨中间主应力与层理方向对页岩力学和渗透特性的影响，运用自主研制的多功能真三轴流固耦合试验系统，以含气页岩为研究对象，进行真三轴应力条件下不同中间主应力加卸载试验。研究结果表明：中间主应力对页岩渗透率的影响在中间主应力垂直于层理面时最大，最小主应力垂直于层理面时次之，最大主应力垂直于层理面时最小；当中间主应力垂直于层理面或平行于层理面时，中间主应力与渗透率呈负相关。中间主应力垂直于层理面时渗透率对中间主应力的敏感性明显大于中间主应力平行于层理面时的敏感性，二者相差1～2个数量级；此外，定义损伤变量D表达式，发现加载过程中损伤变量–中间主应力曲线斜率变化不大，而在卸载过程中斜率变化明显，中间主应力垂直于层理面时损伤变量全程大于中间主应力平行于层理面时的损伤变量。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	蒋长宝1
	2
	陈昱霏1
	2
	尹光志1
	2
	刘超1
	2
	段敏克1
	2

关键词 ：岩石力学, 真三轴, 中间主应力, 渗透率

Abstract：The loading-unloading tests to gas-bearing shale under the true triaxial stress conditions with different intermediate principal stresses were carried out with the multifunctional true triaxial test system developed in house for fluid-solid coupling to explore the influence of intermediate principal stress and bedding direction on mechanical properties and permeability characteristics of shale. The results indicate that the effect of intermediate principal stress on the permeability of shale is greatest when the intermediate principal stress is perpendicular to the bedding plane，is lower when the minor principal stress is perpendicular to the bedding plane，and is lowest when the maximum principal stress is perpendicular to the bedding plane. When the intermediate principal stress is perpendicular to the bedding plane or parallel to the bedding plane，the intermediate principal stress is negatively correlated with the permeability. The permeability is more sensitive to the intermediate principal stress when the intermediate principal stress is perpendicular to the bedding plane than parallel to the bedding plane (the difference is 1 or 2 orders of magnitude). In addition，the expression of the damage variable D was defined. The slope of the damage variable-intermediate principal stress curve changes little during the loading process and changes obviously during the unloading process. The damage variable is bigger when the intermediate principal stress is perpendicular to the bedding plane than parallel to the bedding plane during the whole process.

Key words： rock mechanics true triaxial intermediate principal stress permeability

引用本文:

蒋长宝1，2，陈昱霏1，2，尹光志1，2，刘超1，2，段敏克1，2. 中间主应力与层理方向对页岩力学和渗透特性影响的试验研究[J]. 岩石力学与工程学报, 2017, 36(7): 1570-1578.
JIANG Changbao1，2，CHEN Yufei1，2，YIN Guangzhi1，2，LIU Chao1，2，DUAN Minke1，2. Experimental study on the effect of intermediate principal stress and bedding direction on mechanical properties and permeability of shale. , 2017, 36(7): 1570-1578.

链接本文:

http://www.rockmech.org/CN/10.13722/j.cnki.jrme.2016.1451 或 http://www.rockmech.org/CN/Y2017/V36/I7/1570

[1]	李庆辉，陈勉，金衍，等. 含气页岩破坏模式及力学特性的试验研究[J]. 岩石力学与工程学报，2012，31(增2)：3 763-3 771.(LI Qinghui，CHEN Mian，JIN Yan，et al. Experimental research on failure modes and mechanical behaviors of gas-bearing shale[J]. Chinese Journal of Rock Mechanics and Engineering，2012，31(Supp.2)： 3 763-3 771.(in Chinese))
[16]	HELLER R，VERMYLEN J，ZOBACK M. Experimental investigation of matrix permeability of gas shales[J]. AAPG Bull，2014，98(5)：975-995. " target="_blank">
[2]	United States Energy Information Administration. Technically recoverable shale oil and shale gas resources： An assessment of 137 shale formations in 41 countries outside the United States[R]. Washington：United States Energy Information Administration，2013. " target="_blank">
[4]	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，2015，36(1)：11-25.(ZHUANG Zhuo，LIU Zhanli，WANG Yongliang. Fundamental theory and key mechanical problems of shale oil gas effective extraction[J]. Chinese Quarterly of Mechanics，2015，36(1)：11-25.(in Chinese))
[5]	姚军，孙海，黄朝琴，等. 页岩气藏开发中的关键力学问题[J]. 中国科学：物理学力学天文学，2013，43(12)：1 527-1 547.(YAO Jun，SUN Hai，HUANG Zaoqin，et al. Key mechanical problems in the development of shale gas reservoirs[J]. Scientia Sinica Physica，Mechanica and Astrononica，2013，43(12)：1 527-1 547.(in Chinese))
[14]	MA Y，PAN Z J，ZHONG N N，et al. Experimental study of anisotropic gas permeability and its relationship with fracture structure of Longmaxi shales，Sichuan Basin，China[J]. Fuel，2016，180：106-115. " target="_blank">
[11]	俞缙，李宏，陈旭，等. 渗透压-应力耦合作用下砂岩渗透率与变形关联性三轴试验研究[J]. 岩石力学与工程学报，2013，32(6)：1 203-1 213.(YU Jin，LI Hong，CHEN Xu，et al. Triaxial experimental study of associated permeability-deformation of sandstone under hydro-mechanical coupling[J]. Chinese Journal of Rock Mechanics and Engineering，2013，32(6)：1 203-1 213.(in Chinese))
[17]	LI M H，YIN G Z，XU J，et al. Permeability evolution of shale under anisotropic true triaxial stress conditions[J]. International Journal of Coal Geology，2016，165：142-148. " target="_blank">
[6]	DEWHURST D N，HENNIG A L. Geomechanical properties related to top seal leakage in the Carnarvon Basin，Northwest Shelf，Australia[J]. Petroleum Geoscience，2003，9(3)：255-263. " target="_blank">
[9]	汪吉林，刘桂建，王维忠，等. 川东南龙马溪组页岩孔裂隙及渗透性特征[J]. 煤炭学报，2013，38(5)：772-777.(WANG Jilin，LIU Guijian，WANG Weizhong，et al. Characteristics of pore-fissure and permeability of shales in the Longmaxi Formation in Southeastern
[10]	陈天宇，冯夏庭，杨成祥，等. 含气页岩渗透率的围压敏感性和各向异性研究[J]. 采矿与安全工程学报，2014，31(4)：639-643.(CHEN Tianyu，FENG Xiating，YANG Chengxiang，et al. Research on confining pressure sensitivity and anisotropy for gas shale permeability[J]. Journal of Mining and Safety Engineering，2014，31(4)：639-643.(in Chinese))
[7]	陈天宇，冯夏庭，张希巍，等. 黑色页岩力学特性及各向异性特性试验研究[J]. 岩石力学与工程学报，2014，33(9)：1 772-1 779. (CHEN Tianyu，FENG Xiating，ZHANG Xiwei，et al. Experimental study on mechanical and anisotropic properties of black shale[J]. Chinese Journal of Rock Mechanics and Engineering，2014，33(9)： 1 772-1 779.(in Chinese))
[22]	YIN G Z，JIANG C B，WANG J G.，et al. Geomechanical and flow properties of coal from loading axial stress and unloading confining pressure tests[J]. International Journal of Rock Mechanics and Mining Sciences，2015，76(1)：155-161. " target="_blank">
[3]	BEST M E. Permeability of shale and its significance in oil and gas exploration[J]. Translation Collection on Geophysical Prospecting for Petroleum，1995，(4)：34-40. " target="_blank">
[8]	时贤，程远方，蒋恕，等. 页岩微观结构及岩石力学特征实验研究[J]. 岩石力学与工程学报，2014，33(增2)：3 439-3 445.(SHI Xian，CHENG Yuanfang，JIANG Shu，et al. Experimental study of microstructure and rock properties of shale samples[J]. Chinese Journal of Rock Mechanics and Engineering，2014，33(Supp.2)： 3 439-3 445.(in Chinese))
	Sichuan Basin[J]. Journal of China Coal Society，2013，38(5)：772-777.(in Chinese)) " target="_blank">
[18]	KWON O，KRONENBERG A K，GANGI A F，et al. Permeability of Wilcox shale and its effective pressure law[J]. Journal of Geophysical Research Atmospheres，2001，106(B9)：19 339-19 353. " target="_blank">
[12]	SOEDER D J. Porosity and permeability of eastern devonian gas shale[J]. SPE Formation Evaluation，1988，3(1)：116-124. " target="_blank">
[13]	SANG G J，ELSWORTH D，MIAO X X，et al. Numerical study of a stress dependent triple porosity model for shale gas reservoirs accommodating gas diffusion in kerogen[J]. Journal of Natural Gas Science and Engineering，2016，32：423-438. " target="_blank">
[15]	BHANDARI A R，FLEMINGS P B，POLITO P J，et al. Anisotropy and stress dependence of permeability in the Barnett Shale[J]. Transp Porous Media，2015，108：393-411. " target="_blank">
[19]	KWON O，KRONENBERG A K，GANGI A F，et al. Permeability of illite-bearing shale：1. Anisotropy and effects of clay content and loading[J]. Journal of Geophysical Research Atmospheres，2004，109(10)：67-85. " target="_blank">
[20]	尹光志，李铭辉，许江，等. 多功能真三轴流固耦合试验系统的研制与应用[J]. 岩石力学与工程学报，2015，34(12)：2 436-2 445. (YIN Guangzhi，LI Minghui，XU Jiang，et al. A new multi-functional true triaxial fluid-solid coupling experiment system and its applications[J]. Chinese Journal of Rock Mechanics and Engineering，2015，34(12)：2 436-2 445.(in Chinese))
[21]	王中华. 国内页岩气开采技术进展[J]. 中外能源，2013，18(2)：23-31.(WANG Zhonghua. The progress of the exploitation technology of shale gas in China[J]. Sino-global Energy，2013，18(2)：23-31.(in Chinese)) " target="_blank">