深部盐水环境下砂岩力学及渗透特性试验研究

doi:10.13722/j.cnki.jrme.2021.0326

Abstract
Figure/Table
References (0)
Related Citation (15)

Download: PDF (2750 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract In order to study the mechanical and permeability characteristics of sandstone under different saline environments when CO2 is stored in deep saline layers，conventional triaxial compression，acoustic emission monitoring and permeability tests were adopted to investigate CO2 permeability，strength and deformation behaviors of sandstone specimens under different confining pressures，and the action mechanism of saline solution on the permeability and strength behaviors of sandstone specimens under different confining pressures was revealed by combining with the microstructure. The results show that the permeability，peak strength，damage threshold and elastic modulus of saturated sandstone specimens with different solutions are lower than those of dry sandstone specimens. Compared with the saturated specimens soaked in pure water，the permeability of the saturated sandstone specimens soaked in 5%NaCl or 5%K2SO4 is decreased，and the peak strength，damage threshold and elastic modulus of the saturated sandstone specimens soaked in 5%K2SO4 are increased while there are no obvious changes for the strength and deformation parameters of saturated sandstone specimens soaked in 5%NaCl. The failure modes of the saturated sandstone specimens soaked in different solutions are different，mainly resulted from that the sandstone specimens soaked in saline solutions have more associated cracks. Through observing the microscopic structure，it is found that there are erosion and dissolution holes on the surface of the sandstone specimens after soaking, and that there are crystals on the surface of the saturated specimens soaked in brine solutions. NaCl crystals are randomly distributed on the surface of the specimens，while K2SO4 crystals are accumulated on the surface of the specimens.

Key words： rock mechanics deep saline environment sandstone mechanical behavior permeability microstructure

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	YANG Shengqi1
	2
	XU Shuaibo2
	LIU Zhen2

Cite this article:

YANG Shengqi1,2,XU Shuaibo2, et al. Experimental study on mechanical and permeability behaviors of sandstone under deep saline environments[J]. , 2022, 41(2): 292-304.

URL:

https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2021.0326 OR https://rockmech.whrsm.ac.cn/EN/Y2022/V41/I2/292

[1] 刘斌，孙久强，崔洋洋，等. 深部咸水层CO2埋存机制及埋存能力计算[J]. 新型工业化，2015，5(3)：47–53.(LIU Bin，SUN Jiuqiang，CUI Yangyang，et al. CO2 Sequestration mechanism and capacity calculation in deep saline aquifer[J]. The Journal of New Industrialization，2015，5(3)：47–53.(in Chinese))
[2] ZHANG Z，AGARWAL R K. Numerical simulation and optimization of CO2 sequestration in saline aquifers[J]. Computers and Fluids，2012，16(4)：891–899.
[3] 张鸿翔，李小春，魏宁. 二氧化碳捕获与封存的主要技术环节与问题分析[J]. 地球科学进展，2010，25(3)：335–340.(ZHANG Hongxiang，LI Xiaochun，WEI Ning. Analysis of the main technical links and problems of carbon dioxide capture and storage[J]. Advances in Earth Science，2010，25(3)：335–340.(in Chinese))
[4] BRUANT R G，GUSWA A J，CELIA M A，et al. Safe storage of CO2 in deep saline aquifers[J]. Environmental Science and Technology，2002，36(11)：240A–245A.
[5] 乔丽苹，刘建，冯夏庭. 砂岩水物理化学损伤机制研究[J]. 岩石力学与工程学报，2007，26(10)：2 117–2 124.(QIAO Liping，LIU Jian，FENG Xiating. Study on damage mechanism of sandstone underhydro- physico-chemical effects[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(10)：2 117–2 124.(in Chinese))
[6] SHUKLA R，RANJITH P G，CHOI S K，et al. Mechanical behaviour of reservoir rock under brine saturation[J]. Rock Mechanics and Rock Engineering，2013，46(1)：83–93.
[7] 杨晓琴，梁卫国，于艳梅，等. 溶浸作用下难溶盐岩力学特性弱化及细观机制研究[J]. 岩石力学与工程学报，2014，33(1)：134–143. (YANG Xiaoqin，LIANG Weiguo，YU Yanmei，et al. Mechanical property weakening and the Mesomechanism of hard dissolved saltrock soaked in brine[J]. Chinese Journal of Rock Mechanics and Engineering，2014，33(1)：134–143.(in Chinese))
[8] 黄彦华. 深部盐水环境下砂岩变形破坏特性及CO2渗透演化规律研究[博士学位论文][D]. 徐州：中国矿业大学，2018.(HUANG Yanhua. Study on the deformation failure properties and evolution of CO2 permeability of sandstone in deep saline aquifers[Ph. D. Thesis][D]. Xuzhou：China University of Mining and Technology，2018.(in Chinese))
[9] RATHNAWEERA T D，RANJITH P G，PERERA M S A，et al. Determination of effective stress parameters for effective CO2 permeability in deep saline aquifers：An experimental study[J]. Journal of Natural Gas Science and Engineering，2015，24：64–79.
[10] RATHNAWEERA T D，RANJITH P G，PERERA M S A. Effect of salinity on effective CO2 permeability in reservoir rock determined by pressure transient methods：an experimental study on hawkesbury sandstone[J]. Rock Mechanics and Rock Engineering，2015，48(5)：2 093–2 110.
[11] RATHNAWEERA T D，RANJITH P G，PERERA M S A. Salinity- dependent strength and stress–strain characteristics of reservoir rocks in deep saline aquifers：An experimental study[J]. Fuel，2014，122(4)：1–11.
[12] RATHNAWEERA T D，RANJITH P G，PERERA M S A，et al. Non-linear stress-strain behaviour of reservoir rock under brine saturation：An experimental study[J]. Measurement，2015，71：56–72.
[13] HUANG Y H，YANG S Q，MATTHEW R H，et al. The Effects of NaCl Concentration and Confining Pressure on Mechanical and Acoustic Behaviors of Brine-Saturated Sandstone[J]. Energies，2018，11(2)：385.
[14] ZHENG H，FENG X T，PAN P Z. Experimental investigation of sandstone properties under CO2–NaCl solution-rock interactions[J]. International Journal of Greenhouse Gas Control，2015，37：451–470.
[15] HUANG Y H，YANG S Q，DONG J P. Experimental study on fracture behaviour of three‐flawed sandstone specimens after high-temperature treatments[J]. Fatigue and Fracture of Engineering Materials and Structures，2020，43(10)：2 214–2 231.
[16] YANG S Q，HUANG Y H，RANJITH P G. Failure mechanical and acoustic behavior of brine saturated-sandstone containing two pre-existing flaws under different confining pressures[J]. Engineering Fracture Mechanics，2018，193：108–121.
[17] DIAO Y J，ZHU G W，CAO H，et al. Mesoscale assessment of CO2 storage potential and geological suitability for target area selection in the Sichuan basin[J]. Geofluids，2017，2017：1–17.
[18] 林耀庭，何金权，叶茂才. 四川盆地卤水钾资源分布类型及其品质的研究[J]. 化工矿产地质，2002，24(4)：215–221.(LIN Yaoting，HE Jinquan，YE Maocai. Study on distribution types and quality of potassium resources in brine in Sichuan basin[J]. Geology of Chemical Minerals，2002，24(4)：215–221.(in Chinese))
[19] YANG S Q，RANJITH P G，GUI Y L. Experimental study of mechanical behavior and X-ray micro CT observations of sandstone under conventional triaxial compression[J]. Geotechnical Testing Journal，2015，38(2)：179–197.
[20] SWOLFS H. Influence of pore fluid chemistry and temperature on fracture of sandstone under confining pressure[Ph. D. Thesis][D]. Texas：Texas A&M University，1971.
[21] FENG X T，CHEN S L，ZHOU H. Real-time computerized tomography(CT) experiments on sandstone damage evolution during triaxial compression with chemical corrosion[J]. International Journal of Rock Mechanics and Mining Sciences，2004，41(2)：181–192.
[22] YANG S Q，JING H W，WANG S Y. Experimental investigation on the strength，deformability，failure behavior and acoustic emission locations of red sandstone under triaxial compression[J]. Rock Mechanics and Rock Engineering，2012，45：583–606.
[23] 王环玲，徐卫亚. 致密岩石渗透测试与渗流力学特性[M]. 北京：科学出版社，2015：11–20.(WANG Huanling，XU Weiya. Permeability test and seepage mechanics characteristics of tight rock[M]. Beijing：Science Press，2015：11–20.(in Chinese))
[24] 卜宜顺，杨圣奇，黄彦华. 温度和损伤程度对砂岩渗透特性影响的试验研究[J]. 工程力学，2021，38(5)：122–130.(BU Yishun，YANG Shengqi，HUANG Yanhua. Experimental study on the influence of temperature and damage degree on permeability of sandstone[J]. Engineering Mechanics，2021，38(5)：122–130.(in Chinese))