![]() Sanchez-Vila X, Meier PM, Carrera J (1999) Pumping tests in heterogeneous aquifers: an analytical study of what can be obtained from their interpretation using Jacob’s method. Renard P, Glenz D, Mejias M (2008) Understanding diagnostic plots for well-test interpretation. Osiensky JL, Williams RE, Williams B, Johnson G (2006) Evaluation of drawdown curves derived from multiple well aquifer tests in heterogeneous environments. Meier PM, Carrera J, Sànchez-Vila X (1998) An evaluation of Jacob method for the interpretation of pumping tests in heterogeneous formations. International Institute for Land Reclamation and Improvement, Wageningen Kruseman GP, de Ridder NA (1991) Analysis and evaluation of pumping test data. Halford KJ, Weight WD, Schreiber RP (2006) Interpretation of Transmissivity Estimates from Single-Well Pumping Aquifer Tests. Prentice Hall, Upper Saddle River, New Jerseyįreeze RA, Cherry JA (1979) Groundwater. įetter CW (2001) Applied hydrogeology, 4th edn. Springer, New YorkĬooper HH Jr, Jacob CE (1946) A generalized graphical method for evaluating formation constants and summarizing well field history. ![]() Ĭhiang WH, Kinzelbach W (2001) 3D-Groundwater modeling with PMWIN. Soc Petrol Eng Ĭalvache ML, Sánchez-Úbeda JP, Duque C, López-Chicano M, De la Torre B (2016) Evaluation of analytical methods to study aquifer properties with pumping tests in coastal aquifers with numerical modelling (Motril-Salobreña aquifer). The study contributes towards a better practical understanding of the effects of using of using the Cooper and Jacob method to interpret multi-well aquifer-pumping test data for groundwater practitioners.īourdet D, Ayoub JA, Pirard YM (1989) Use of pressure derivative in well-test interpretation. Storativity estimates from observation data appears to decrease with increase in the observation distance as controlled by the Copper and Jacob equation but remained in the same order of magnitude as the prescribed model storativity. Only interpretation of pumping-well data with the Cooper and Jacob method correctly estimated the prescribed model transmissivity. The study shows that the transmissivity estimated from observation well data exponentially increases with the observation distance irrespective of the value of u. Simulated drawdown is interpreted using the Cooper–Jacob method. This is achieved with the help of simulations in 3 homogeneous one-layered confined and isotropic aquifer models using MODFLOW. The study illustrates and discusses the effect of using the Cooper and Jacob method to interpret multi-well aquifer-pumping tests. Despite the wide use of the method, the effects of using the Cooper and Jacob method to interpret multi-well aquifer-pumping test data are hardly discussed. For observation wells (piezometers), the method said to be valid when u < 0.01 when drawdown observations are made in the near vicinity of the pumping well after a sufficiently long time of pumping. The method can be used to interpret both pumping and observation well drawdown. Cooper, Jacob, Trans Am Geophys Union 27:526534, 1946) method is widely used to interpret data from both single- and multi-well aquifer-pumping tests in a porous homogenous and isotropic confined aquifer system. The Cooper and Jacob (Trans Am Geophys Union 27:526–534.
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