双封隔器技术在无锡市WTS01井水文地质勘查中的应用
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摘要
探讨双封隔器技术在水文地质勘查中的优势及适用条件。以无锡市WTS01井为例,阐述了195型双封隔器技术在水文勘探孔洗井及分层抽水试验中的工作原理,并对结果进行分析。结果显示:双封隔器技术可显著提高洗井效果,与活塞洗井相比较,渗透系数提高了3.5倍;双封隔器技术实现了"一孔同径、分层抽水、一层抽水、多层监测",可用于相邻含水层垂向水力联系的研究。
The new technique of Model 195 double packer is applied to well washing and stratified pumping test of hydrological exploration borehole of WTS01 in Wuxi City, in order to explore the advantages and applicable conditions of the new technology. The working principles of this new technique are introduced and the obtained results are analyzed. It shows that the double packer can significantly improve the effect of well flushing, and its permeability coefficient is 3.5 times higher than that of piston flushing. The new technique of double packer can achieve such effects as same diameter in one drilling hole, stratified pumping, single layer pumping and simultaneous monitoring for multilayers. Therefore, it can be used to study the vertical hydraulic connection of adjacent aquifers.
The new technique of Model 195 double packer is applied to well washing and stratified pumping test of hydrological exploration borehole of WTS01 in Wuxi City, in order to explore the advantages and applicable conditions of the new technology. The working principles of this new technique are introduced and the obtained results are analyzed. It shows that the double packer can significantly improve the effect of well flushing, and its permeability coefficient is 3.5 times higher than that of piston flushing. The new technique of double packer can achieve such effects as same diameter in one drilling hole, stratified pumping, single layer pumping and simultaneous monitoring for multilayers. Therefore, it can be used to study the vertical hydraulic connection of adjacent aquifers.
引文
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[11] 金瞰岂,李世峰.洗井的影响因素[J].水文地质工程地,1995,22(6):58-59.Jin K Q,Li S F.The influence factors of wash well[J].Hydrogeology & Engineering Geology,1995,22(6):58-59.(in Chinese)
[12] 吕健.水锤效应影响洗井效果的原理[J].探矿工程,2015,42(7):14-18.Lü J.Theory of influences of water hammer effect on well cleanout[J].Exploration Engineering,2015,42(7):14-18.(in Chinese)
[13] Bergant A,Simpson A R,Tijsseling A S.Water hammer with column separation:A historical review[J].Journal of Fluids and Structures,2006,22:135-171.
[14] 王学芳.工业管道中的水锤[M].北京:科学出版社,1995:1-2.Wang X F.Water Hammer in Industrial Pipeline[M].Beijing:Science Press,1995:1-2.(in Chinese)
[15] Lohrasbi A R,Attarnejad R.Water hammer analysis by characteristic method[J].American Journal of Engineering and Applied Sciences,2008,1(4):287-294.
[2] 中国地质调查局.水文地质手册(第2版)[M].北京:地质出版社,2012.China Geological Survey.Handbook of Hydrogeology (2nd Edition) [M].Beijing:Geological Publishing House,2012.(in Chinese)
[3] 张子祥.水文孔成井阶段的洗井方法和适用条件[J].甘肃地质,2006,15(2):90-92.Zhang Z X.Washing methods during period of well completion and its applicable condition[J].Gansu Geology,2006,15(2):90-92.(in Chinese)
[4] 查恩来,张秋建.井群出水量减少原因分析及治理:以北京某应急备用地下水源为例[J].水文地质工程地质,2005,32(2):115-117.Zha E L,Zhang Q J.Analysis of the causes of the decrease in well production and its remedial measures:Exemplified by an urgent standby wellfield in Beijing [J].Hydrogeology & Engineering Geology,2005,32(2):115-117.(in Chinese)
[5] 冯亿年.多种方法联合洗井增大供水井出水量的实例[J].探矿工程,2007,(8):6-8.Feng Y N.Instance of a variety of methods of joint wash well to increase water supply well[J].Exploration Engineering,2007,(8):6-8.(in Chinese)
[6] 秦小飞,冯永仁.地层测试器双封隔器坐封性能研究[J].液压气动与密封,2012,(12):12-14.Qin X F,Feng Y R.Research on the setting function of dual packer on formation tester[J].Hydraulics Pneumatics & Seals,2012,(12):12-14.(in Chinese)
[7] 刘建刚.洗井工艺[M].武汉:中国地质大学出版社,1990:81-84.Liu J G.Flushing Process[M].Wuhan:China University of Geosciences Press,1990:81-84.(in Chinese)
[8] 程志忠.几种洗井方法在水文钻井中的应用[J].西部探矿工程,2008,(9):104-105.Cheng Z Z.Application of several kinds of washing method of hydrological drilling well [J].West Exploration Engineering,2008,(9):104-105.(in Chinese)
[9] 王偲,吕健,杨甘生.水文钻孔新型洗井技术简介[J].人民长江,2015,46(增刊1):103-105.Wang C,Lü J,Yang G S.Introduction of new flushing technology in hydrological borehole[J].Yangtze River,2015,46(S1):103-105.(in Chinese)
[10] 王晓燕,安永会,邵新民,等.封隔震荡洗井新技术在水文地质勘查中的应用研究[J].水文地质工程地质,2017,44(4):30-33.Wang X Y,An Y H,Shao X M,et al.Application of the new technology of well-flushing with parker to hydrogeological exploration[J].Hydrogeology & Engineering Geology,2017,44(4):30-33.(in Chinese)
[11] 金瞰岂,李世峰.洗井的影响因素[J].水文地质工程地,1995,22(6):58-59.Jin K Q,Li S F.The influence factors of wash well[J].Hydrogeology & Engineering Geology,1995,22(6):58-59.(in Chinese)
[12] 吕健.水锤效应影响洗井效果的原理[J].探矿工程,2015,42(7):14-18.Lü J.Theory of influences of water hammer effect on well cleanout[J].Exploration Engineering,2015,42(7):14-18.(in Chinese)
[13] Bergant A,Simpson A R,Tijsseling A S.Water hammer with column separation:A historical review[J].Journal of Fluids and Structures,2006,22:135-171.
[14] 王学芳.工业管道中的水锤[M].北京:科学出版社,1995:1-2.Wang X F.Water Hammer in Industrial Pipeline[M].Beijing:Science Press,1995:1-2.(in Chinese)
[15] Lohrasbi A R,Attarnejad R.Water hammer analysis by characteristic method[J].American Journal of Engineering and Applied Sciences,2008,1(4):287-294.