Analyze the Tranmissivity for Pumping Well testing with Single and Observation Well
In general, for determining aquifer parameters pumping test conducted on the production well, since in Erbil catchment area observation wells are not exist. In the present study steady state pumping test method using single well was used to estimate the tranmissivity of the aquifer. For this purpose pumping test conducted on a single production pumping well at the specific area which is located at the QATAWI area near Erbil city. The results of transmissivity obtained from single well pumping test data compared with that obtained from observation well. The value of Transmissivity calculated from the field data via pumping test on single pumping well equal to 13.05 m/day however its value obtained from observation well equal to 197.7 m/day. It was observed that there are differences between the results of transmisivity of the aquifer using single pumping well and observation well. It is result using observation well is higher than observation well; this is mostly due to the losses that are available within the pumping well. To get a real value of transmissivity of the aquifer the pumping test should be conducted on an observation well or adjustment of the data after single well testing.
2. Anomohanran, O. and Iserhien-Emekeme, R.E., 2014. Estimation of aquifer parameters in Erho, Nigeria using the Cooper-Jacob evaluation method. American Journal of Environmental Sciences, 10(5), p.500.
3. Brown, R. H. (1963). Estimating the Transmissivity of an artesian aquifer from the specific capacity of a well. U. S, Geological survey water supply paper 15336-I. pp. 336-338.
4. Chenini, I et all (2008), “A Simple Method to Estimate Transmibillity and Storativity of Aquifer Using Specific Capacity of Wells”, journal of applied science, vol. 8, no. 14, pp. 2640-2643.
5. Cimen, M. (2015) “A Straight Line Method for Analyzing Residual Drawdowns at an Observation Well”, Mathematical Problems in Engineering, pp. 1-5.
6. Fetter, C. W. (1998), “Applied Hydrology” Prentice hall.
7. Halford, K. J., Weight, W. D. and Schreiber, R.P. (2006) “Interpretation of Trasmissivity Estimates from Single – Well Pumping Aquifer Tests”. Ground water, vol. 44, no. 3, pp. 467-471.
8. H. H. Cooper and C. E. Jacob (1946), “A generalized graphical method for evaluating formation constants and summarizing well-field history,” Transactions, American Geophysical Union, vol. 27, no. 4, pp. 526–534.
9. Hurr, R. T .(1966). A new approach for estimating Transmissivity from the specific capacity. Water Resources Research.V.2. 4. pp.657-664.
10. Krásný, J., 1993. Classification of transmissivity magnitude and variation. Groundwater, 31(2), pp.230-236.
11. T. P. Clement et all, (1996) “Two well test method for determining hydraulic properties of aquifer”, Ground Water, vol. 35, no. 4, pp. 698-703.
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