液相高压脉冲放电致裂岩石技术研究进展

doi:10.3969/j.issn.1006-6535.2021.04.001

摘要/Abstract

摘要： 致密砂岩和页岩油气藏因其岩性致密、孔隙度和渗透率极低等特点给勘探开发带来了挑战。针对低渗油气资源,液相高压脉冲放电致裂岩石技术是提高开发效果的重要手段之一。分析总结液相高压脉冲放电致裂岩石技术的实验装置研发、影响因素和岩石裂缝规律,明确当前面临的问题以及发展方向。结果表明:液相介质电导率的提高有助于提高脉冲放电冲击波强度;放电电压越高、放电能量越大,致裂岩石效果越好;岩石裂缝的起裂主要受张剪性应力影响,裂缝扩展存在对称性,有转向、分叉和波形特征。该文可为液相高压脉冲放电致裂岩石技术相关研究工作提供参考,对非常规油气藏开发工作具有重要意义。

关键词: 液相高压脉冲放电, 液电破碎岩石, 致密砂岩, 页岩, 低孔低渗

Abstract: There are much more challenges in the exploration and development of tight sandstone and shale oil and gas reservoirs due to their tight lithology and extremely low porosity and permeability. For low-permeability oil and gas resources, rock fracturing technology with high-voltage pulse discharge in liquid is one of the important means to improve the effect of development. In this paper, the experimental device development, influencing factors and rock fracture law of the rock fracturing technology with high-voltage pulse discharge in liquid were analyzed and summarized, and the existing problems and development direction were determined. The results showed that the improvement of the conductivity of the liquid medium was helpful to increase the intensity of the pulse discharge shock wave; the higher the discharge voltage and the greater the discharge energy, the better the rock fracturing effect; the rock fracturing was mainly affected by tensile and shear stress, the fracture progress was symmetric, with turning, bifurcation and waveform characteristics. This paper provides a reference for the studies on rock fracturing technology with high-voltage pulse discharge in liquid, with great significance for the development of unconventional oil and gas reservoirs.

Key words: high-voltage pulse discharge in liquid, hydroelectric rock breaking, tight sandstone, shale, low porosity and low permeability

中图分类号:

TE21

李沼萱, 闫铁, 侯兆凯, 孙文峰, 鞠国帅, 刘树龙. 液相高压脉冲放电致裂岩石技术研究进展[J]. 特种油气藏, 2021, 28(4): 1-9.

Li Zhaoxuan, Yan Tie, Hou Zhaokai, Sun Wenfeng, Ju Guoshuai, Liu Shulong. Study Progress of Rock Fracturing Technology with High-voltage Pulse Discharge in Liquid[J]. Special Oil & Gas Reservoirs, 2021, 28(4): 1-9.

参考文献

[1] 王永辉,卢拥军,李永平,等.非常规储层压裂改造技术进展及应用[J].石油学报,2012,33(增刊1):149-158.
WANG Yonghui,LU Yongjun,LI Yongping,et al.Progress and application of unconventional reservoir fracturing technology[J].Acta Petrolei Sinica,2012,33(S1):149-158.
[2] 闫东.岩体内静水压下高压脉冲放电爆轰致裂基础研究[D].太原:太原理工大学,2017.
YAN Dong. Basic research on fracture induced by high voltage pulse discharge detonation under hydrostatic pressure in rock mass [D].Taiyuan:Taiyuan University of Technology,2017.
[3] 张辉,蔡志翔,姜敞,等.深部岩石高效破碎方法研究[J].西部探矿工程,2018,30(9):75-79.
ZHANG Hui,CAI Zhixiang,JIANG Chang,et al.Research on high-efficiency fragmentation method of deep rock[J].West-China Exploration Engineering,2018,30(9):75-79.
[4] 冯锟.浅析液电效应原理及应用[J].电子制作,2014,22(8):228-229.
FENG Kun.Analysis of the principle and application of hydraulic electric effect[J].Electronic Manufacture,2014,22(8):228-229.
[5] POKRYVAILO A,WOLF M,YANKELEVICH Y.Investigation of operational regimes of a high-power pulsed corona source with an all-solid state pulser[J].IEEE Transactions on Dielectrics & Electrical Insulation,2007,14(4):846-857.
[6] MAUREL O,REESS T,MATALLAH M,et al.Electrohydraulic shock wave generation as a means to increase intrinsic permeability of mortar[J].Cement and Concrete Research,2010,40(12):1631-1638.
[7] OSHITA D,HOSSEINI S H R,MIYAMOTO Y,et al.Study of underwater shock waves and cavitation bubbles generated by pulsed electric discharges[J].IEEE Transactions on Dielectrics & Electrical Insulation,2013,20(4):1273-1278.
[8] IWASA S,KIRA A,MAEHARA H,et al.Pressure measurements and numerical simulation of underwater shock wave for food processing[J].Materials Science Forum,2014,767:229-232.
[9] 苏权生.等离子脉冲压裂技术[J].内蒙古石油化工,2014,40(20):97-98.
SU Quansheng.Plasma pulse fracturing technology[J].Inner Mongolia Petrochemical Industry,2014,40 (20):97-98.
[10] 崔晓杰.等离子脉冲谐振压裂技术[J].石油钻探技术,2015,43(4):82-85.
CUI Xiaojie.Plasma pulse resonance fracturing technology[J].Petroleum Drilling Techniques,2015,43(4):82-85.
[11] 常雷,张珂,赵立英.高压脉冲解堵技术及矿场应用[J].今日科苑,2008,17(16):80.
CHANG Lei,ZHANG Ke,ZHAO Liying.High voltage pulse plugging removal technology and field application[J].Jinri Keyuan,2008,17(16):80.
[12] 赵海龙,兰艾芳,张俊,等.高压电脉冲化学剂联合解堵[J].油田化学,1998,15(2):113-115.
ZHAO Hailong, LAN Aifang, ZHANG Jun, et al.Downhole high voltage pulsating discharge/chemical treatments in combination for reservoir blockage relieving in prodction wells[J].Oilfield Chemistry,1998,15(2):113-115.
[13] 贾富泽,李幸兰,李建勇,等.低频电脉冲解堵技术在油田生产中的应用[J].内蒙古石油化工,2006,32(5):172-173.
JIA Fuze,LI Xinglan,LI Jianyong,et al.Application of low-frequency electrical pulse plugging removal technology in oilfield production[J].Inner Mongolia Petrochemical Industry,2006,32(5):172-173.
[14] 杨永超,陈定柱,王延海.井下低频电脉冲采油技术的应用[J].油气井测试,2001,10(增刊1):60-62.
YANG Yongchao,CHEN Dingzhu,WANG Yanhai.Application of the low-frequency electrical pulse oil production technology in the downhole[J].Well Testing,2001,10(S1):60-62.
[15] 霍孟友,张建华,艾兴.电火花放电加工间隙状态检测方法综述[J].电加工与模具,2012,17(3):100-104.
HUO Mengyou,ZHANG Jianhua,AI Xing.Summarization of gap states monitoring methods in EDM[J].Electromachining & Mould,2012,17(3):100-104.
[16] 王天波,李保国,刘中敏.低频脉冲振荡解堵仪的研制与应用[J].石油管材与仪器,2000,14(2):11-14.
WANG Tianbo,LI Baoguo,LIU Zhongmin.Development and application of low frequency oscillation deplugging tool[J].Petroleum Tubular Goods & Instruments,2000,14(2):11-14.
[17] 谷志鹏.煤岩水力压裂有效影响范围及其制约因素实验研究[D].焦作:河南理工大学,2015.
GU Zhipeng.Experimental study on effective influence range and restricting factors of coal rock hydraulic fracturing[D].Jiaozuo:Henan Polytechnic University,2015.
[18] ZHU T Y,YANG L J,JIA Z J,et al.Characteristics of streamer discharge development between the dielectric-coated sphere-plane electrodes in water[J].Journal of Applied Physics,2009,104(11):1-5.
[19] LI X W,CHAO Y C,WU J,et al.Study of the shock waves characteristics generated by underwater electrical wire explosion[J].Journal of Applied Physics,2015,118(2):1-8.
[20] 蒋杰灵,兰生,杨嘉祥.水中脉冲放电等离子体特性数值解析[J].哈尔滨理工大学学报,2008,13(5):107-111.
JIANG Jieling,LAN Sheng,YANG Jiaxiang.Numerical analysis of the plasma characteristics of pulsed discharge in water[J].Journal of Harbin University of Science and Technology,2008,13(5):107-111.
[21] 王一博.水中等离子体声源的理论与实验研究[D].长沙:国防科学技术大学,2012.
WANG Yibo.Theoretical and experimental study of the underwater plasma acoustic source[D].Changsha:National University of Defense Technology,2012.
[22] KWAN C K,JOHN P C.Time-dependent pressure effect in liquid dielectrics[J].IEEE Transactions on Electrical Insulation,1970,5(3):64-68.
[23] ZHAO P F,SUBRATA R.A modified resistance equation for modeling underwater spark discharge with salinity and high pressure conditions[J].Journal of Applied Physics,2014,115(17):1-9.
[24] JONES H M,KUNHARDT E E.Pre-breakdown currents in water and aqueous solutions and their influence on pulsed dielectric breakdown[J].Journal of Applied Physics,1995,78(5):3308-3314.
[25] GUROVICH V T,GRINENKO A,KRASIK Y E,et al.Simplified model of underwater electrical discharge[J].Physical Review,2004,69(3):1-6.
[26] KAIZHUO L,NING L,HAI H,et al.The characteristics of underwater plasma discharge channel and its discharge circuit[J].Lecture Notes in Electrical Engineering,2011,87:619-626.
[27] 祝效华,罗云旭,刘伟吉,等.等离子体电脉冲钻井破岩机理的电击穿实验与数值模拟方法[J].石油学报,2020,41(9):1146-1162.
ZHU Xiaohua,LUO Yunxu,LIU Weiji,et al.Electrical breakdown experiment and numerical simulation method of rock-breaking mechanism of plasma electric pulse drilling[J].Acta Petrolei Sinica,2020,41(9):1146-1162.
[28] 张辉,蔡志翔,陈安明,等.液相放电等离子体破岩室内实验与破岩机理[J].石油学报,2020,41(5):615-628.
ZHANG Hui,CAI Zhixiang,CHEN Anming,et al.Experiments and mechanism of rock breaking by the plasma shock wave generated by underwater discharge[J].Acta Petrolei Sinica,2020,41(5):615-628.
[29] 夏华磊.水中放电等离子体特性及应用研究[D].武汉:华中科技大学,2016.
XIA Hualei.Study on the characteristics and application of discharge plasma in water[D].Wuhan:Huazhong University of Science and Technology,2016.
[30] RIM G H,CHO C H.Design and testing of a rotary arc gap-switch for pulsed power[J].IEEE Transactions on Plasma Science,2000,28(5):1491-1496.
[31] 卞德存.静水压下脉冲放电冲击波特性及其岩体致裂研究[D].太原:太原理工大学,2018.
BIAN Decun.Research on the shock wave characteristics of pulsed discharge under hydrostatic pressures and its fracturing effect on rock mass[D].Taiyuan:Taiyuan University of Technology,2018.
[32] 付荣耀,孙鹞鸿,高迎慧,等.一种高压脉冲电源设计与实验[J].火力与指挥控制,2014,39(6):170-173.
FU Rongyao,SUN Yaohong,GAO Yinghui,et al.Design and experiment of a high voltage pulse power supply[J].Fire Control & Command Control,2014,39(6):170-173.
[33] LIU Y,LI Z Y,LI X D,et al.Energy transfer efficiency improvement of liquid pulsed current discharge by plasma channel length regulation method[J].IEEE Transactions on Plasmaence,2017,45(12):3231-3239.
[34] 付荣耀,周健,孙鹞鸿,等.无围压下高电压脉冲放电在岩石压裂中的应用[J].高电压技术,2015,41(12):4055-4059.
FU Rongyao,ZHOU Jian,SUN Yaohong,et al.Application of high voltage pulse discharge in rock fracturing without confining pressure[J].High Voltage Engineering,2015,41(12):4055-4059.
[35] 莊佳昇.水电式液体震波管之研制[D].台南:成功大学,2005.
ZHUANG Jiasheng.Development of electro-hydraulic liquid shock tube[D].Tainan:National Cheng Kung University,2005.
[36] 付荣耀,孙鹞鸿,刘坤,等.大水泥岩样的电脉冲压裂实验研究[J].强激光与粒子束,2018,30(4):131-135.
FU Rongyao,SUN Yaohong,LIU Kun,et al.Experimental study of fracturing under electric pulse for large cement sample[J].High Power Laser and Particle Beams,2018,30(4):131-135.
[37] 王雅珍,庆迎博,孟爽,等.石墨烯制备及应用研究进展[J].化学世界,2019,60(7):385-394.
WANG Yazhen,QING Yingbo,MENG Shuang,et al.Research progress in preparation and application of graphene[J].Chemical World,2019,60(7):385-394.
[38] 鲍先凯,刘源,郭军宇,等.煤岩体在水中高压放电下致裂效果的定量评价[J].岩石力学与工程学报,2020,39(4):715-725.
BAO Xiankai,LIU Yuan,GUO Junyu,et al.Quantitative evaluation of fracturing effect of coal-rock masses under high-voltage discharge actions in water[J].Chinese Journal of Rock Mechanics and Engineering,2020,39(4):715-725.
[39] 鲍先凯.高压电脉冲水压压裂煤体机理及实验研究[D].太原:太原理工大学,2018.
BAO Xiankai.Mechanism and experimental study of high-voltage electric pulse water fracturing coal[D].Taiyuan:Taiyuan University of Technology,2018.
[40] 鲍先凯,武晋文,杨东伟,等.高压电脉冲水压致裂煤体效果实验研究[J].煤炭科学技术,2017,45(9):133-138.
BAO Xiankai,WU Jinwen,YANG Dongwei,et al.Experimental study on coal fracturing effect by high-voltage pulsed water pressure[J].Coal Science and Technology,2017,45(9):133-138.
[41] CHEN W,MAUREL O,REESS T,et al.Experimental study on an alternative oil stimulation technique for tight gas reservoirs based on dynamic shock waves generated by pulsed arc electrohydraulic discharges[J].Journal of Petroleum Science and Engineering,2012,88(2):67-74.
[42] LI L X,QIAN D,ZOU X B,et al.Underwater electrical wire explosion:shock wave from melting being overtaken by shock wave from vaporization[J].Physics of Plasmas,2018,25(5):1-5.
[43] LI L X,QIAN D,ZOU X B,et al.Effect of deposition energy on underwater electrical wire explosion[J].IEEE Transactions on Plasma Science,2018,46(10):3444-3449.
[44] LIU B,WANG D G,GUO Y B.Effect of circuit parameters and environment on shock waves generated by underwater electrical wire explosion[J].IEEE Transactions on Plasma Science,2017,45(9):2519-2526.
[45] 付荣耀,孙鹞鸿,徐旭哲,等.静水压力对岩石在等离子体冲击下压裂效果的影响[J].爆炸与冲击,2018,38(5):1051-1056.
FU Rongyao,SUN Yaohong,XU Xuzhe,et al.Effect of hydrostatic pressure on fracture of rock subjected to plasma impact[J].Explosion and Shock Waves,2018,38(5):1051-1056.
[46] 王广旭,刘永红,申泱.等离子钻井过程中岩石破碎的实验研究[J].电加工与模具,2016,24(5):60-63.
WANG Guangxu,LIU Yonghong,SHEN Yang.Experimental study on rock breaking in the process of plasma drilling[J].Electromachining & Mould,2016,24(5):60-63.
[47] MAO R,DE P,LEON J F,et al.Experiments on pulse power fracturing[C].SPE153805,2012:1-16.
[48] 付荣耀,孙鹞鸿,樊爱龙,等.高压电脉冲在页岩气开采中的压裂实验研究[J].强激光与粒子束,2016,28(7):186-190.
FU Rongyao,SUN Yaohong,FAN Ailong,et al.Research of rock fracturing based on high voltage pulse in shale gas drilling[J].High Power Laser and Particle Beams,2016,28(7):186-190.
[49] 姜敞.液相放电等离子体破岩方法研究[D].北京:中国石油大学(北京),2018.
JIANG Chang.Study on rock breaking by liquid discharge plasma[D].Beijing:China University of Petroleum(Beijing),2018.
[50] 秦爽,赵金昌,卞德存.水中高压脉冲放电致裂岩体实验研究[J].爆破,2020,37(1):94-101.
QIN Shuang,ZHAO Jinchang,BIAN Decun.Study on fractured rock mass caused by high pressure pulse discharge in water[J].Blasting,2020,37(1):94-101.
[51] 卞德存,闫东,贾少华,等.基于高压电脉冲的煤体增透实验台[J].煤炭技术,2015,34(8):225-227.
BIAN Decun,YAN Dong,JIA Shaohua,et al.Experiment table of coal anti-reflection based on high-voltage electrical impulses[J].Coal Technology,2015,34(8):225-227.
[52] YAN D,BIAN D C,ZHAO J C,et al.Study of the electrical characteristics, shock-wave pressure characteristics,and attenuation law based on pulse discharge in water[J].Shock and Vibration,2016,23(6):1-11.
[53] LI Z X,YAN T,HOU Z K,et al.Visualization experiment and numerical simulation of pulsed plasma fracturing rock cracks[J].Journal of Engineering Science and Technology Review,2020,13(4):232-239.
[54] 周晓亭,秦勇,李恒乐,等.电脉冲应力波作用下煤体微裂隙形成与发展过程[J].煤炭科学技术,2015,43(2):127-130.
ZHOU Xiaoting,QIN Yong,LI Hengle,et al.Formation and development of coal micro-fractures under stress wave induced by electrical impulses[J].Coal Science and Technology,2015,43(2):127-130.
[55] 李恒乐,秦勇,张永民,等.重复脉冲强冲击波对肥煤孔隙结构影响的实验研究[J].煤炭学报,2015,40(4):915-921.
LI Hengle,QIN Yong,ZHANG Yongmin,et al.Experimental study on the effect of strong repetitive pulse shockwave on the pore structure of fat coal[J].Journal of China Coal Society,2015,40(4):915-921.