Browse > Article
http://dx.doi.org/10.7857/JSGE.2020.25.4.035

Comparisons of Different Step-drawdown Test Analysis Methods; Implication for Improrvced Analysis for Step-drawdown Test Data  

An, Hyowon (Korea Institute of Geoscience and Mineral Resources)
Ha, Kyoochul (Korea Institute of Geoscience and Mineral Resources)
Lee, Eunhee (Korea Institute of Geoscience and Mineral Resources)
Do, Byung Hee (Hanseo Engineering Inc.)
Publication Information
Journal of Soil and Groundwater Environment / v.25, no.4, 2020 , pp. 35-47 More about this Journal
Abstract
Step-drawdown test is one of the widely-used aquifer test methods to evaluate aquifer and well losses. Various approaches have been suggested to estimate well losses using the step-drawdown test data but the uncertainties associated with data interpretation and analysis still exist. In this study, we applied three different step-drawdown test analysis methods -Jacob (1947), Labadie and Helweg (1975), Gupta (1989)- to the step-drawdown test data in Seobu-myeon, Hongseong-gun, South Korea and estimated aquifer and well losses. Comparisons of different step-drawdown test analysis methods revealed that the estimated well losses showed different values depending on the applied methods and these variations are likely to be related to the limitation of the assumptions for each analysis method. Based on the detailed analysis of time-drawdown data, we performed step-drawdown test analysis after removing outlier data during the initial stage of step drawdown test. The results showed that the application of the revised time-drawdown data could substantially decrease the error of the analysis as well as the variations in the estimated well losses from different analysis methods.
Keywords
Step-drawdown test; well losses; Jacob; Labadie and Helweg; Gupta;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
1 Birsoy, Y.K. and Summers, W.K., 1980, Determination of aquifer parametes from step tests and intermittent pumping data, Ground Water, 18(2), 137-146.   DOI
2 Choi, H.M., Lee, J.Y., Cheon, J.Y., Jun, S.C., and Kwon, H.P., 2010, Estimation of optimal pumping rate, well efficiency and radius of influence using step-drawdown tests, The Journal of Engineering Geology, 20(20), 127-136.
3 Chung, S.Y., Kim, B.W., Kim, G.B., and Kweon, H.W., 2009, Effects of well parameters analysis techniques on evaluation of well efficiency in step-drawdown test, The Journal of Engineering Geology, 19(1), 71-79.
4 Gupta, A.D., 1989, On analysis of step-drawdown data, Ground Water, 27(6), 874-881.   DOI
5 Han, J.S., 1998, Groundwater Environment and Pollution, Parkyoungsa, 1071p.
6 Jacob, C.E., 1947, Drawdown test to determine effective radius of artesian well, Trans. Am. Soc. Civ. Eng., 112, 1047-1070.   DOI
7 Avci, C.B., 1992, Parameter estimation for step-drawdown tests, Ground Water, 30(3), 338-342.   DOI
8 Batu, V., 1998, Aquifer Hydraulics- A comprehensive guide to hydrogeologic data analysis, John Wiley & Sons, New York, 727p.
9 Jeon, S.K., Koo, M.H., Kim, Y.J., and Kang, I.O., 2005, Statistical analysis of aquifer characteristics using pumping test data of national groundwater monitoring wells for korea, J. Soil Groundw. Environ., 10(6), 32-44.
10 Kawechi, M.W., 1995, Meaningful interpretationo of step-draw-down tests, Ground Water, 33(1), 23-32.   DOI
11 Kim, B.W., Kim, H.S., Kim, G.Y., and Koh, Y.K., 2012, Evaluation of low or high permeability of fractured rock using well head losses from step-drawdown tests, J. of the Korean Radioactive Waste Society, 10(1), 1-11.   DOI
12 Kim, G.B., Kim, B.W., and Kim S.Y., 2010, Improvement of well efficiency through well development in a pumping well, J. Soil Groundw. Environ., 15(1), 39-49.
13 Sheahan, N.T., 1971, Type-curve solution of step-drawdown test, Ground Water, 9(1), 25-29.   DOI
14 Labadie, J.W. and Helweg, O.J., 1975, Step-drawdown test analysis by computer, Ground Water, 13(5), 438-444.   DOI
15 Lee, C.W., Lee, D.H., Jeong, J.G., Kim, K.Y., and Kim, Y.J., 2002, Well Loss in fractured rock formation with radial flow during pumping test, J. Soil Groundw. Environ., 7(4), 17-23.
16 Mok, J.K., Jang, B.J., Park, Y.C., Oh, J.S., Lee, G.C., and Kim, K.J., 2018, Estimation of optimal pumping rate by step-draw-down tests at combined well and open-closed loops geothermal systems, The Geological Society of Korea, 54(4), 415-424.   DOI
17 Rorabaugh, M.I., 1953, Graphical and theoretical analysis of step-drawdown tests of artesian wells, Proc. Am. Soc. Civ. Eng., 79(12), 1-23.
18 National Institute of Meteorological Sciences (NIMS), 2019, Climate Change of Korean Peninsula for 100 years, 31p., Reference no. 11-1360620-000132-01.
19 Singh, S.K., 1998, Optimization of confined aquifer parameters from variable rate pump test, J. Hydraul. Eng., 4(1), 61-70.
20 Song, J.Y., Lee, S.M., Choi, Y.S., and Jeong, G.C., 2017, Experimental study on the effect of filter layers on pumping capacity and well efficiency in an unconfined aquifer, The Journal of Engineering Geology, 27(4), 405-416.   DOI
21 Korea Meteorological Administration, 2020, Climate Data (1999-2019), http://data.kma.go.kr. (Cited 17 March 2020)
22 Lee, J.Y., Song, S.H., and Lee, K.K., 2005, Effects of selected time on analysis results in step-drawdown tests, J. Soil Groundw. Environ., 10(2), 59-65.