回声法检测盐穴造腔气水界面波形的数值模拟
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摘要
回声法检测盐穴造腔气水界面具有操作方便、成本低等特点,能够有效控制腔体形态,然而盐穴造腔过程中环空状况复杂,波形识别难度大,导致回声法检测造腔界面存在精度不高的问题。为准确识别盐腔界面检测波形,首先利用Gambit软件建立了回声法检测盐穴造腔氮气-卤水界面数值模型,再利用Fluent软件数值模拟了回声法检测盐穴造腔氮气-卤水界面波形,给出了环空尺寸固定、缩小、扩大3种条件下的氮气-卤水界面检测波形特征。研究结果表明:在不同环空状态下,压力波曲线各有鲜明特征,由此可以利用回声法对盐穴造腔界面进行精确识别。研究成果对盐穴造腔回声法界面检测具有重要的理论与实践指导意义。
The echolocation method for measuring the nitrogen-brine interface during salt-cavern solution mining is advantageous from the aspects of easy operation and low cost, and it can control the cavern shape effectively. However, its measurement accuracy is not high for the annulus condition in the process of salt-cavern solution mining is complex and the waveform recognition is difficult. To recognize the waveform of nitrogen-brine interface accurately, a numerical model to measure the nitrogen-brine interface during salt-cavern solution mining based on the echolocation method was established by the software Gambit. Then, the waveform of nitrogen-brine interface measured by the echolocation method was simulated numerically by the software Fluent. And finally, the waveform characteristics of the nitrogen-brine interface were obtained for three annulus sizes, i.e., fixed, reduced and enlarged. It is shown that the pressure wave curves have distinct characteristics in different annulus states, so based on the characteristics, the nitrogen-brine interface during salt-cavern solution mining can be measured accurately by means of echolocation method. The research results can be used as the theoretical and practical guidance for the interface measurement of salt-cavern solution mining by the echolocation method.
The echolocation method for measuring the nitrogen-brine interface during salt-cavern solution mining is advantageous from the aspects of easy operation and low cost, and it can control the cavern shape effectively. However, its measurement accuracy is not high for the annulus condition in the process of salt-cavern solution mining is complex and the waveform recognition is difficult. To recognize the waveform of nitrogen-brine interface accurately, a numerical model to measure the nitrogen-brine interface during salt-cavern solution mining based on the echolocation method was established by the software Gambit. Then, the waveform of nitrogen-brine interface measured by the echolocation method was simulated numerically by the software Fluent. And finally, the waveform characteristics of the nitrogen-brine interface were obtained for three annulus sizes, i.e., fixed, reduced and enlarged. It is shown that the pressure wave curves have distinct characteristics in different annulus states, so based on the characteristics, the nitrogen-brine interface during salt-cavern solution mining can be measured accurately by means of echolocation method. The research results can be used as the theoretical and practical guidance for the interface measurement of salt-cavern solution mining by the echolocation method.
引文
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[2]郭巍.盐穴储气库水溶造腔过程中的腔体稳定性研究[D].武汉:武汉轻工大学,2015:3-6.GUO W.Research on cavity’s stability in solution mining for salt cavern gas storage[D].Wuhan:Wuhan University of Light Industry,2015:3-6.
[3]YUAN G J,SHEN R C,TIAN Z L,et al.Review of underground gas storage in the bedded salt deposit in China[C].Calgary:Gas Technology Symposium,2006:SPE-100385-MS.
[4]袁光杰,杨长来,王斌,等.国内地下储气库钻完井技术现状分析[J].天然气工业,2013,33(2):61-64.YUAN G J,YANG C L,WANG B,et al.Drilling and completion technologies for the underground gas storage(UGS)in China:A state-of-the-art appraisal[J].Natural Gas Industry,2013,33(2):61-64.
[5]崔康.地下盐穴储气库溶腔施工过程中的腔顶氮气保护技术[J].中国井矿盐,2016,47(5):15-16.CUI K.Roof with nitrogen protection technology of underground gas storage during the construction of cavern dissolution[J].China Well and Rock Salt,2016,47(5):15-16.
[6]胡开君,巴金红,王成林.盐穴储气库造腔井油水界面位置控制方法[J].石油化工应用,2014,33(5):59-61.HU K J,BA J H,WANG C L.The controlling of the oil-water interface in salt gas storage leaching well[J].Petrochemical Industry Application,2014,33(5):59-61.
[7]ROWLAN O L,MCCOY J N,BECKER D,et al.Advanced techniques for acoustic liquid-level determination[C].Oklahoma:Production and Operations Symposium,2003:SPE-80889-MS.
[8]MCCOY J N,ROWLAN O L,BECKER D,et al.Applications of acoustic liquid level measurements in gas wells[C].San Antonio:Annual Technical Conference,2006:SPE-101498-MS.
[9]董建辉,袁光杰,申瑞臣,等.盐穴储气库腔体形态控制新方法[J].油气储运,2009,28(12):35-37.DONG J H,YUAN G J,SHEN R C,et al.New method for control of salt cavity shape of salt cavern gas storage[J].Oil&Gas Storage and Transportation,2009,28(12):35-37.
[10]丁国生.金坛盐穴地下储气库建库关键技术综述[J].天然气工业,2007,27(3):111-113.DING G S.General introduction on key technologies of the construction of Jintan underground salt cavern gas storage[J].Natural Gas Industry,2007,27(3):111-113.
[11]田中兰,夏柏如.盐穴储气库造腔工艺技术研究[J].现代地质,2008,22(1):97-102.TIAN Z L,XIA B R.Research of solution mining techniques on salt cavern gas storage[J].Geoscience,2008,22(1):97-102.
[12]李建中,李奇,胥洪成.盐穴地下储气库气密封检测技术[J].天然气工业,2011,31(5):90-92.LIJZ,LIQ,XUHC.Sealing testing techniques of underground gas storage based on salt caverns[J].Natural Gas Industry,2011,31(5):90-92.
[13]刘继芹,焦雨佳,李建君,等.盐穴储气库回溶造腔技术研究[J].西南石油大学学报(自然科学版),2016,38(5):122-128.LIU J Q,JIAO Y J,LI J J,et al.Back-leaching technology in the construction of underground salt cavern gas storage[J].Journal of Southwest Petroleum University(Science&Technology Edition),2016,38(5):122-128.
[14]李海伟,杨清玉.盐穴储气库溶腔过程中腔体净容积及油水界面计算实例[J].石油化工应用,2015,34(6):56-58.LI H W,YANG Q Y.A model for calculation of the net volume and oil-brine interface in salt gas storage[J].Petrochemical Industry Application,2015,34(6):56-58.
[15]易其军.油井动液面自动测量系统研究与设计[D].南昌:南昌大学,2014:5-10.YI Q J.Research and design of oil well working level automatic measurement[D].Nanchang:Nanchang University,2014:5-10.
[16]曹红艳.煤层气井动液面回声自动测量仪设计[D].青岛:中国石油大学(华东),2014:10-13.CAO H Y.The design of echo automatic level instrument for coal bed methane well[D].Qingdao:China University of Petroleum(Huadong),2014:10-13.
[17]林立星.声波法测油井动液面信号辨识技术研究[D].北京:中国石油大学(北京),2011:6-9.LIN L X.Research on signal identification technology in liquid level detection of oil wells using acoustic method[D].Beijing:China University of Petroleum(Beijing),2011:6-9.
[18]王瑞金,张凯,王刚.Fluent技术基础与应用实例[M].北京:清华大学出版社,2007:55-56.WANG R J,ZHANG K,WANG G.Fluent technology foundation and application example[M].Beijing:Tsinghua University Press,2007:55-56.
[19]郭兰兰,耿介,石硕,等.基于UDF方法的阀门变速关闭过程中的水击压强计算研究[J].山东大学学报(理学版),2014,49(3):27-30.GUO L L,GENG J,SHI S,et al.Computing research of the water hammer pressure in the process of the variable speed closure of valve based on UDF method[J].Journal of Shandong University(Natural Science),2014,49(3):27-30.
[20]华晔,廖伟丽.CFD技术在管道阀门水击计算中的应用[J].电网与清洁能源,2009,25(3):72-75.HUA Y,LIAO W L.Application of CFD method in calculation of water hammer for pipe valve[J].Power System and Clean Energy,2009,25(3):72-75.
[21]杜功焕,朱哲民,龚秀芬.声学基础[M].南京:南京大学出版社,2001:50-51.DU G H,ZHU Z M,GONG X F.The basis of acoustics[M].Nanjing:Nanjing University Press,2001:50-51.