液氮磨料射流破碎高温花岗岩机理

doi:10.7623/syxb202005009

石油学报 ›› 2020, Vol. 41 ›› Issue (5): 604-614.DOI: 10.7623/syxb202005009

液氮磨料射流破碎高温花岗岩机理

黄中伟¹, 张世昆¹, 李根生¹, 杨睿月¹, 武晓光¹, 张宏源¹, Kamy Sepehrnoori²

1. 中国石油大学(北京)油气资源与探测国家重点实验室北京 102249;
2. 德克萨斯大学奥斯汀分校石油工程学院美国德州奥斯汀 78705

收稿日期:2019-03-20 修回日期:2020-01-08 出版日期:2020-05-25 发布日期:2020-06-08
通讯作者: 黄中伟,男,1972年4月生,1994年获石油大学(华东)学士学位,2006年获中国石油大学(华东)博士学位,现为中国石油大学(北京)石油工程学院教授,主要从事油气井流体力学与完井增产技术研究。
作者简介:黄中伟,男,1972年4月生,1994年获石油大学(华东)学士学位,2006年获中国石油大学(华东)博士学位,现为中国石油大学(北京)石油工程学院教授,主要从事油气井流体力学与完井增产技术研究。Email:huangzw@cup.edu.cn
基金资助:
国家杰出青年科学基金项目（No.51725404）和高等学校学科创新引智计划项目（B17045）资助。

Breakage mechanism of high-temperature granite by abrasive liquid nitrogen jet

Huang Zhongwei¹, Zhang Shikun¹, Li Gensheng¹, Yang Ruiyue¹, Wu Xiaoguang¹, Zhang Hongyuan¹, Kamy Sepehrnoori²

1. State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum, Beijing 102249, China;
2. Hildebrand Department of Petroleum and Geosystems Engineering, University of Texas at Austin, Austin 78705, TX, USA

Received:2019-03-20 Revised:2020-01-08 Online:2020-05-25 Published:2020-06-08

摘要/Abstract

摘要：

液氮磨料射流是一种高效的破碎干热岩方式。为进一步探究其破岩机理，开展液氮磨料射流喷射高温花岗岩室内实验。从宏观角度分析岩石破碎形式、射流孔眼形态及表面特征，从微观角度分析断裂面形貌和微裂缝分布等，探究液氮磨料射流破碎高温岩石特征。同时，开展磨料水射流和氮气磨料射流破岩实验作为对照。实验结果表明，液氮磨料射流形成的孔眼形状不规则，表面凹凸不平，且破碎体积明显大于磨料水射流和氮气磨料射流。扫描电镜实验显示，低温、冲击载荷作用下，在孔眼壁面和孔眼附近区域生成大量微裂缝，其主要断裂方式为拉伸、剪切作用下岩石的脆性断裂，表现为穿晶断裂和沿晶断裂。理论分析和数值模拟研究表明，液氮低温作用对岩石造成损伤，而热应力、磨料冲击载荷和流体水楔作用在损伤岩石基础上主要以剪切和拉伸两种方式破碎岩石。

关键词: 干热岩, 液氮, 磨料射流, 破岩实验, 热流固耦合

Abstract:

Abrasive liquid nitrogen jet is an efficient method for breaking hot dry rock. In order to further explore its rock-breaking mechanism, this study carries out the laboratory experiments of abrasive liquid nitrogen jet spraying on high-temperature granite. The characteristics of high-temperature granite crushed by abrasive liquid nitrogen jet are explored by analyzing the forms of rock fragmentation, the shapes and surface characteristics of jet perforation cavity from a macro perspective, as well as the morphology of the fracture surface and micro-crack distribution from a micro perspective. Meanwhile, rock breaking experiments with abrasive water jet and abrasive nitrogen jet are carried out as control. The experimental results show that the perforation cavities formed by abrasive liquid nitrogen jet are irregular in shape, and its surface is uneven.The crushing volume is significantly larger than that formed by abrasive water jet and abrasive nitrogen jet. SEM experiments show that a large number of micro-cracks are generated in the wall surface of the perforation cavity and the nearby area under low-temperature action and impact loads. The fracturing mode of rocks is dominated by brittle fracture under tensile and shear action, shown as transgranular and intergranular fractures. The theoretical analysis and numerical simulation researches show that the low-temperature action of liquid nitrogen causes damage to rocks, while the rocks are further damaged by thermal stress, abrasive impact load, and the effect of fluid water wedge.

Key words: hot dry rock, liquid nitrogen, abrasive jet, rock breaking experiment, thermal-hydraulic-mechanical coupling

中图分类号:

TE248

黄中伟, 张世昆, 李根生, 杨睿月, 武晓光, 张宏源, Kamy Sepehrnoori. 液氮磨料射流破碎高温花岗岩机理[J]. 石油学报, 2020, 41(5): 604-614.

Huang Zhongwei, Zhang Shikun, Li Gensheng, Yang Ruiyue, Wu Xiaoguang, Zhang Hongyuan, Kamy Sepehrnoori. Breakage mechanism of high-temperature granite by abrasive liquid nitrogen jet[J]. Acta Petrolei Sinica, 2020, 41(5): 604-614.

参考文献

[1] 蔺文静,刘志明,王婉丽,等. 中国地热资源及其潜力评估[J].中国地质,2013,40(1):312-321.
LIN Wenjing,LIU Zhiming,WANG Wanli,et al.The assessment of geothermal resources potential of China[J].Geology in China,2013,40(1):312-321.
[2] 王贵玲,张薇,梁继运,等.中国地热资源潜力评价[J].地球学报,2017,38(4):448-459.
WANG Guiling,ZHANG Wei,LIANG Jiyun,et al.Evaluation of geothermal resources potential in China[J].Acta Geoscientica Sinica,2017,38(4):449-459.
[3] 汪集旸,胡圣标,庞忠和,等.中国大陆干热岩地热资源潜力评估[J].科技导报,2012,30(32):25-31.
WANG Jiyang,HU Shengbiao,PANG Zhonghe,et al.Estimate of geothermal resources potential for hot dry rock in the continental area of China[J].Science & Technology Review,2012,30(32):25-31.
[4] LIAO Zhijie.Hot dry rock geothermal resources in southwestern China[M]//LIAO Zhijie.Thermal springs and geothermal energy in the Qinghai-Tibetan plateau and the Surroundings.Singapore:Springer,2018:263-271.
[5] LIU Weili,GAO Kai.Drilling technical difficulties and solutions in development of hot dry rock geothermal energy[J].Advances in Petroleum Exploration and Development,2017,13(1):63-69.
[6] YOST K,VALENTIN A,EINSTEIN H H.Estimating cost and time of wellbore drilling for Engineered Geothermal Systems (EGS)-Considering uncertainties[J].Geothermics,2015,53:85-99.
[7] 王学杰,李根生,康延军,等.利用水力脉冲空化射流复合钻井技术提高钻速[J].石油学报,2009,30(1):117-120.
WANG Xuejie,LI Gensheng,KANG Yanjun,et al.Improvement of penetration rate with hydraulic pulsating-cavitation jet compound drilling technology[J].Acta Petrolei Sinica,2009,30(1):117-120.
[8] 唐川林,胡东,裴江红.自激振荡脉冲射流喷嘴频率特性实验研究[J].石油学报,2007,28(4):122-125.
TANG Chuanlin,HU Dong,PEI Jianghong.Experimental study on the frequency characteristic of the self-excited oscillation pulsed nozzle[J].Acta Petrolei Sinica,2007,28(4):122-125.
[9] 马卫国,杨增辉,易先中,等.国内外激光钻井破岩技术研究与发展[J].石油矿场机械,2008,37(11):11-16.
MA Weiguo,YANG Zenghui,YI Xianzhong,et al.Current progresses on laser drilling technology[J].Oil Field Equipment,2008,37(11):11-16.
[10] 程晓泽,任福深,方天成,等.粒子射流耦合冲击破岩实验[J].石油学报,2018,39(2):232-239.
CHENG Xiaoze,REN Fushen,FANG Tiancheng,et al.Experiment of rock breaking by particle-jet coupling impact[J].Acta Petrolei Sinica,2018,39(2):232-239.
[11] 贺振国,李根生,王海柱,等.超临界二氧化碳射流中的颗粒跟随及影响因素[J].石油学报,2017,38(4):475-484.
HE Zhenguo,LI Gensheng,WANG Haizhu,et al.Particle following motion in supercritical carbon dioxide jet and its influence factors[J].Acta Petrolei Sinica,2017,38(4):475-484.
[12] 宋先知,吕泽昊,崔柳,等.高温射流反应腔结构设计与反应规律[J].石油学报,2017,38(5):587-596.
SONG Xianzhi,LÜ Zehao,CUI Liu,et al.Structure design and reaction law of high-temperature jet reaction chamber[J].Acta Petrolei Sinica,2017,38(5):587-596.
[13] 李根生,黄中伟,张德斌,等.高压水射流与化学剂复合解堵工艺的机理及应用[J].石油学报,2005,26(1):96-99.
LI Gensheng,HUANG Zhongwei,ZHANG Debin,et al.Block-removing technus using high pressure water jets combined with acidization[J].Acta Petrolei Sinica,2005,26(1):96-99.
[14] ZHANG Shikun,HUANG Zhongwei,LI Gensheng,et al.Numerical analysis of transient conjugate heat transfer and thermal stress distribution in geothermal drilling with high-pressure liquid nitrogen jet[J].Applied Thermal Engineering,2018,129:1348-1357.
[15] ZHANG Shikun,HUANG Zhongwei,HUANG Pengpeng,et al.Numerical and experimental analysis of hot dry rock fracturing stimulation with high-pressure abrasive liquid nitrogen jet[J].Journal of Petroleum Science and Engineering,2018,163:156-165.
[16] 李川,王时龙,张贤明,等.干热岩在地热发电中的应用[J].热力发电,2008,37(11):138-139.
LI Chuan,WANG Shilong,ZHANG Xianming,et al.Application of dry hot rock in geothermal power generation[J].Thermal Power Generation,2008,37(11):138-139.
[17] ZHANG Shikun,HUANG Zhongwei,ZHANG Hongyuan,et al.Experimental study of thermal-crack characteristics on hot dry rock impacted by liquid nitrogen jet[J].Geothermics,2018,76:253-260.
[18] 黄中伟,蔡承政,李根生,等.液氮磨料射流流场特性及颗粒加速效果研究[J].中国石油大学学报:自然科学版,2016,40(6):80-86.
HUANG Zhongwei,CAI Chengzheng,LI Gensheng,et al.Flow behavior and particle acceleration effect of abrasive liquid nitrogen jet[J].Journal of China University of Petroleum:Edition of Natural Science,2016,40(6):80-86.
[19] ZHANG Shikun,HUANG Zhongwei,SHI Huaizhong,et al.Note:a novel experimental setup for high-pressure abrasive liquid nitrogen jet[J]. Review of Scientific Instruments,2018,89(8):086109.
[20] 冯涛,谢学斌,潘长良,等.岩爆岩石断裂机理的电镜分析[J].中南工业大学学报,1999,30(1):14-17.
FENG Tao,XIE Xuebin,PAN Changliang,et al.Fracture mechanism analysis for burst rock with electron scanning microscope[J].Journal of Central South University of Technology,1999,30(1):14-17.
[21] 贾茹,付晓飞,孟令东,等.断裂及其伴生微构造对不同类型储层的改造机理[J].石油学报,2017,38(3):286-296.
JIA Rui,FU Xiaofei,MENG Lingdong,et al.Transformation mechanism of fault and its associated microstructures for different kinds of reservoirs[J].Acta Petrolei Sinica,2017,38(3):286-296.
[22] 谢和平,陈至达.岩石断裂的微观机理分析[J].煤炭学报,1989(2):57-67.
XIE Heping,CHEN Zhida.Analysis of rock fracture micro-mechanism[J].Journal of China Coal Society,1989(2):57-67.
[23] 蔡承政,李根生,黄中伟,等.液氮压裂中液氮对岩石破坏的影响试验[J].中国石油大学学报:自然科学版,2014,38(4):98-103.
CAI Chengzheng,LI Gensheng,HUANG Zhongwei,et al.Experimental study on effect of liquid nitrogen on rock failure during cryogenic nitrogen fracturing[J].Journal of China University of Petroleum:Edition of Natural Science,2014,38(4):98-103.
[24] 蔡承政,李根生,黄中伟,等.液氮对页岩的致裂效应及在压裂中应用分析[J].中国石油大学学报:自然科学版,2016,40(1):79-85.
CAI Chengzheng,LI Gensheng,HUANG Zhongwei,et al.Thermal cracking effect of liquid nitrogen on shale and its application analysis in hydraulic fracturing[J].Journal of China University of Petroleum:Edition of Natural Science,2016,40(1):79-85.
[25] WU Xiaoguang,HUANG Zhongwei,SONG Hengyu,et al.Variations of physical and mechanical properties of heated granite after rapid cooling with liquid nitrogen[J].Rock Mechanics and Rock Engineering,2019,52(7):2123-2139.
[26] WU Xiaoguang,HUANG Zhongwei,ZHANG Shikun,et al.Damage analysis of high-temperature rocks subjected to LN2 thermal shock[J]. Rock Mechanics and Rock Engineering,2019,52(8):2585-2603.
[27] HAN Songcai,CHENG Yuanfang,GAO Qi,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.
[28] JARVIE D M,HILL R J,RUBLE T E,et al.Unconventional shale-gas systems:the Mississippian Barnett shale of north-central Texas as one model for thermogenic shale-gas assessment[J].AAPG Bulletin,2007,91(4):475-499.
[29] 任福深,方天成,程晓泽,等.粒子射流冲击下破岩应力分析与破岩区域[J].石油学报,2018,39(9):1070-1080.
REN Fushen,FANG Tiancheng,CHENG Xiaoze,et al.Rock-breaking stress analysis and rock-breaking region under particle-waterjet impact[J].Acta Petrolei Sinica, 2018,39(9):1070-1080.
[30] 卢义玉,黄飞,王景环,等.超高压水射流破岩过程中的应力波效应分析[J].中国矿业大学学报,2013,42(4):519-525.
LU Yiyu,HUANG Fei,WANG Jinghuan,et al.Analysis of stress wave effect during rock breakage process by ultra-high pressure water jet[J].Journal of China University of Mining & Technology,2013,42(4):519-525.
[31] 司鹄,王丹丹,李晓红.高压水射流破岩应力波效应的数值模拟[J].重庆大学学报,2008,31(8):942-945.
SI Hu,WANG Dandan,LI Xiaohong.Stress wave effect in numerical simulation on rock breaking under high-pressure water jet[J].Journal of Chongqing University,2008,31(8):942-945.
[32] 卢义玉,张赛,刘勇,等.脉冲水射流破岩过程中的应力波效应分析[J].重庆大学学报,2012,35(1):117-124.
LU Yiyu,ZHANG Sai,LIU Yong,et al.Analysis on stress wave effect during the process of rock breaking by pulsed jet[J].Journal of Chongqing University,2012,35(1):117-124.
[33] 董松林.循环冲击荷载下脆性岩石疲劳特性研究[D].天津:天津大学,2018.
DONG Songlin.Study on fatigue property of brittle rock under repetitive impact loading[D].Tianjin:Tianjin University,2018.

液氮磨料射流破碎高温花岗岩机理

Breakage mechanism of high-temperature granite by abrasive liquid nitrogen jet

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