液氮超低温诱导岩石类材料裂缝形成机制研究

doi:10.13722/j.cnki.jrme.2021.0821

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Abstract Liquid nitrogen(LN2) fracturing is a method of stimulating reservoir with ultra-low temperature LN2. Different from the conventional fracturing methods，the ultra-low temperature impact of LN2 will sharply reduce the reservoir rock temperature，produce strong temperature stress and induce fractures in the reservoir rock. To explore the initiation and propagation mechanisms of rock fractures induced by LN2 ultra-low temperature，LN2 ultra-low temperature impact simulation experiments were carried out on open-hole wellbores，preset fractures and hydraulic fractures respectively. The distribution characteristics of induced fractures were obtained，and the changes of the temperature fields along the radial direction of the open-hole wellbores and the normal direction of the preset fractures during ultra-low temperature impact were measured. The applicability of the maximum tensile stress criterion and the stress intensity factor fracture criterion to determine the fracture propagation range induced by ultra-low temperature was studied. The results show that the initiation of the ultra-low temperature induced fractures are mainly perpendicular to the existing fracture surface such as the open-hole wellbore wall，the preset fracture and the hydraulic fracture，and the secondary induced fractures perpendicular to the induced fractures also appear on both sides of the induced fractures，forming a complex fracture network. According to the experimental results of fracture propagation scale，the maximum tensile stress criterion and the stress intensity factor fracture criterion are proposed to determine the lower and upper limits of the induced fracture propagation length respectively. In addition，the method of hydraulic fracturing combined with LN2 fracturing was proposed and verified by experiments. The research results provide a basis for the feasibility and design of LN2 fracturing.

Key words： rock mechanics liquid nitrogen fracturing temperature impact induced fractures multistage branch fractures

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	ZHENG Xuelin
	ZHANG Guangqing
	ZHENG Shijie

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ZHENG Xuelin,ZHANG Guangqing,ZHENG Shijie. Study on formation mechanisms of fractures in rock-like materials induced by liquid nitrogen ultra-low temperature[J]. , 2022, 41(5): 889-903.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2021.0821 OR https://rockmech.whrsm.ac.cn/EN/Y2022/V41/I5/889

[1] ZOBACK M D，KOHLI A H. Unconventional reservoir geomechanics：shale gas，tight oil，and induced seismicity[M]. Cambridge：Cambridge University Press，2019：233–262.
[2] UWIERA-GARTNER M. Groundwater considerations of shale gas developments using hydraulic fracturing：examples，additional study and social responsibility[C]// SPE Unconventional Resources Conference. [S. l.]：Society of Petroleum Engineers，2013：167233.
[3] ELLAFI A，JABBARI H，TOMOMEWO O S，et al. Future of hydraulic fracturing application in terms of water management and environmental issues：a critical review[C]// SPE Canada Unconventional Resources Conference. [S. l.]：Society of Petroleum Engineers，2020：199993.
[4] FOLLETT A. Germany pretty much bans all fracking until 2021[N]. The Daily Caller，2017–2–14[2021–02–25].
[5] DTE S. Ireland becomes the fourth EU country to ban fracking[N]. Down To Earth，2018–7–11[2021–02–25].
[6] ABEL J C. Application of nitrogen fracturing in the Ohio shale[C]// SPE Eastern Regional Meeting. [S. l.]：Society of Petroleum Engineers，1981：10378.
[7] LILLIES A T，KING S R. Sand fracturing with liquid carbon dioxide[C]// SPE Production Technology Symposium. [S. l.]：Society of Petroleum Engineers，1982：11341.
[8] MCDANIEL B，GRUNDMANN S R，KENDRICK W D，et al. Field applications of cryogenic nitrogen as a hydraulic fracturing fluid[C]// SPE Annual Technical Conference and Exhibition. [S. l.]：Society of Petroleum Engineers，1997：38623.
[9] HARRIS R P，AMMER J，PEKOT L J，et al. Liquid carbon dioxide fracturing for increasing gas storage deliverability[C]// SPE Eastern Regional Meeting. [S. l.]：Society of Petroleum Engineers，1998：51066.
[10] STEVE R，GARY D，GREG A，et al. Cryogenic nitrogen as a hydraulic fracturing fluid in the Devonian shale[C]// Proceedings of SPE Eastern Regional Meeting. [S. l.]：Society of Petroleum Engineers，1998：51067.
[11] WANG L，YAO B，CHA M，et al. Waterless fracturing technologies for unconventional reservoirs-opportunities for liquid nitrogen[J]. Journal of Natural Gas Science and Engineering，2016，35：160–174.
[12] ZHOU D，ZHANG G，WANG Y，et al. Experimental investigation on fracture propagation modes in supercritical carbon dioxide fracturing using acoustic emission monitoring[J]. International Journal of Rock Mechanics and Mining Sciences，2018，110：111–119.
[13] FAHANDEZHSAADI M，AMOOIE A，HEMMATI-SARAPARDEH A，et al. Laboratory evaluation of nitrogen injection for enhanced oil recovery：effects of pressure and induced fractures[J]. Fuel，2019，253：607–614.
[14] CHA M，YIN X，KNEAFSEY T，et al. Cryogenic fracturing for reservoir stimulation-laboratory studies[J]. Journal of Petroleum Science and Engineering，2014，124：436–450.
[15] CHA M，ALQAHTANI N B，YAO B，et al. Cryogenic fracturing of wellbores under true triaxial-confining stresses：experimental investigation[J]. SPE Journal，2018，23(4)：1 271–1 289.
[16] YANG R，HUANG Z，SHI Y，et al. Laboratory investigation on cryogenic fracturing of hot dry rock under triaxial-confining stresses[J]. Geothermics，2019，79：46–60.
[17] YANG R，HONG C，HUANG Z，et al. Liquid nitrogen fracturing in boreholes under true triaxial stresses：laboratory investigation on fractures initiation and morphology[J]. SPE Journal，2021，26(1)：135–154.
[18] 蔡承政，任科达，杨玉贵，等. 液氮压裂作用下页岩破裂特征试验研究[J]. 岩石力学与工程学报，2020，39(11)：2 183–2 203.(CAI Chengzheng，REN Keda，YANG Yugui，et al. Experimental research on shale cracking characteristics due to liquid nitrogen fracturing[J]. Chinese Journal of Rock Mechanics and Engineering，2020，39(11)：2 183–2 203.(in Chinese))
[19] HAN S，CHENG Y，GAO Q，et al. Experimental study of the effect of liquid nitrogen pretreatment on shale fracability[J]. Journal of Natural Gas Science and Engineering，2018，60：11–23.
[20] CAI C，LI G，HUANG Z，et al. Experiment of coal damage due to super-cooling with liquid nitrogen[J]. Journal of Natural Gas Science and Engineering，2015，22：42–48.
[21] GAO F，CAI C，YANG Y. Experimental research on rock fracture failure characteristics under liquid nitrogen cooling conditions[J]. Results in Physics，2018，9：252–262.
[22] HAN S，GAO Q，CHENG Y，et al. Experimental study on brittle response of shale to cryogenic liquid nitrogen treatment[J]. Journal of Petroleum Science and Engineering，2020，194：107463.
[23] 李云鹏，王芝银. 花岗岩低温强度参数与冰胀力的关系研究[J]. 岩石力学与工程学报，2010，29(增2)：4 113–4 118.(LI Yunpeng，WANG Zhiyin. Study of relationship between strength parameters and ice expansion force of granite under low temperature[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(Supp.2)： 4 113–4 118.(in Chinese))
[24] 徐彬，李宁，李仲奎，等. 低温液化石油气和液化天然气储库及相关岩石力学研究进展[J]. 岩石力学与工程学报，2013，32(增2)：2 977–2 993.(XU Bin，LI Ning，LI Zhongkui et al. Low-temperature LPG and LNG storage caverns and related research review of rock mechanics[J]. Chinese Journal of Rock Mechanics and Engineering，2013，32(Supp.2)：2 977–2 993.(in Chinese))
[25] 徐光苗，刘泉声，彭万巍，等. 低温作用下岩石基本力学性质试验研究[J]. 岩石力学与工程学报，2006，25(12)：2 502–2 508.(XU Guangmiao，LIU Quansheng，PENG Wanwei，et al. Experimental study on basic mechanical behaviors of rocks under low temperatures[J]. Chinese Journal of Rock Mechanics and Engineering，2006，25(12)：2 502–2 508.(in Chinese))
[26] CAI C，LI G，HUANG Z，et al. Experimental study of the effect of liquid nitrogen cooling on rock pore structure[J]. Journal of Natural Gas Science and Engineering，2014，21：507–517.
[27] ZHAO B，ZHANG G，ZHAO P，et al. Experimental study of mechanics and seepage characteristics of sandstones after liquid-nitrogen stimulation[J]. Journal of Natural Gas Science and Engineering，2017，47：11–21.
[28] YIN G，SHANG D，LI M，et al. Permeability evolution and mesoscopic cracking behaviors of liquid nitrogen cryogenic freeze fracturing in low permeable and heterogeneous coal[J]. Powder Technology，2018，325：234–246.
[29] MAHESAR A A，SHAR A M，ALI M，et al. Morphological and petro physical estimation of Eocene tight carbonate formation cracking by cryogenic liquid nitrogen；a case study of Lower Indus basin，Pakistan[J]. Journal of Petroleum Science and Engineering，2020，192：107318.
[30] QIN L，LI S，ZHAI C，et al. Changes in the pore structure of lignite after repeated cycles of liquid nitrogen freezing as determined by nitrogen adsorption and mercury intrusion[J]. Fuel，2020，267：117214.
[31] HUANG Z，ZHANG S，YANG R，et al. A review of liquid nitrogen fracturing technology[J]. Fuel，2020，266：117040.
[32] ZHANG L，CHEN S，ZHANG C，et al. The characterization of bituminous coal microstructure and permeability by liquid nitrogen fracturing based on μCT technology[J]. Fuel，2020，262：116635.
[33] 任韶然，范志坤，张亮等. 液氮对煤岩的冷冲击作用机制及试验研究[J]. 岩石力学与工程学报，2013，32(增2)：3 790–3 794.(REN Shaoran，FAN Zhikun，ZHANG Liang et al. Mechanisms and experimental study of thermal-shock effect on coal-rock using liquid nitrogen[J]. Chinese Journal of Rock Mechanics and Engineering，2013，32(Supp.2)：3 790–3 794.(in Chinese))
[34] KOCABAS I. An analytical model of temperature and stress fields during cold-water injection into an oil reservoir[J]. SPE Production and Operations，2006，21(2)：282–292.
[35] ALQAHTANI N B，MISKIMINS J L，HUANG C，et al. 3D finite element modeling of thermally-induced stress during a cryogenic fracturing experiment[C]// The 51st U.S. Rock Mechanics/ Geomechanics Symposium. [S. l.]： American Rock Mechanics Association，2017：0122.
[36] PERKINS T D，GONZALEZ J A. The effect of thermoelastic stresses on injection well fracturing[J]. SPE Journal，1985，25(1)：78–88.
[37] TRAN D，SETTARI A，NGHIEM L. Initiation and propagation of secondary cracks in thermo-poroelastic media[C]// The 46th U.S. Rock Mechanics/Geomechanics Symposium. [S. l.]：American Rock Mechanics Association，2012：252.
[38] TANG S，ZHANG H，TANG C，et al. Numerical model for the cracking behavior of heterogeneous brittle solids subjected to thermal shock[J]. International Journal of Solids and Structures，2016，80：520–531.
[39] YAO B，WANG L，PATTERSON T，et al. Experimental study and modeling of cryogenic fracturing treatment of synthetic rock samples using liquid nitrogen under tri-axial stresses[C]// SPE Unconventional Resources Conference. [S. l.]：Society of Petroleum Engineers，2017：185050.
[40] FINNIE I，COOPER G A，BERLIE J. Fracture propagation in rock by transient cooling[J]. International Journal of Rock Mechanics and Mining Sciences，1979，16：11–21.
[41] BLAUEL J G，KALTHOFF J F，STAHN D. Model experiments for thermal shock fracture behavior[J]. Journal of Engineering Materials and Technology-Transactions of the ASME，1974，96(4)：299–308.
[42] EMERY A F，WALKER G E，WILLIAMS J A. A Green?s function for the stress-intensity factors of edge cracks and its application to thermal stresses[J]. Journal of Fluids Engineering-Transactions of the ASME，1969，91(4)：618–624.
[43] TIMONSHENKO S，GOODIER J N. Theory of elasticity[M]. New York：McGraw-Hill，1951：412.
[44] 唐世斌，罗江，唐春安. 低温诱发岩石破裂的理论与数值模拟研究[J]. 岩石力学与工程学报，2018，37(7)：1 596–1 607.(TANG Shibin，LUO Jiang，TANG Chun'an. Theoretical and numerical study on the cryogenic fracturing in rock[J]. Chinese Journal of Rock Mechanics and Engineering，2018，37(7)：1 596–1 607.(in Chinese))
[45] BROWN E T，HOEK E. Trends in relationships between measured in-situ stresses and depth[J]. International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts，1978，15(4)：211–215.
[46] 黄荣樽，庄锦江. 一种新的地层破裂压力预测方法[J]. 石油钻采工艺，1986，(3)：1–14.(HUANG Rongzun，ZHUANG Jinjiang. A new method for predicting formation fracture pressure[J]. Oil Drilling and Production Technology，1986，(3)：1–14.(in Chinese))
[47] 黄荣樽. 水力压裂裂缝的起裂和扩展[J]. 石油勘探与开发，1981，(5)：62–74.(HUANG Rongzun. Initiation and propagation of hydraulic fracturing fractures[J]. Petroleum Exploration and Development，1981，(5)：62–74.(in Chinese))
[48] 赵波. 超低温环境下致密岩石孔隙力学特性研究及应用[博士学位论文][D]. 北京：中国石油大学(北京)，2019.(ZHAO Bo. Research and application of pore-related mechanical properties of tight rocks at ultra-low temperature[Ph. D. Thesis][D]. Beijing：China University of Petroleum，Beijing，2019.(in Chinese))