Articles | Volume 56
https://doi.org/10.5194/adgeo-56-107-2021
https://doi.org/10.5194/adgeo-56-107-2021
12 Nov 2021
 | 12 Nov 2021

Deconvolution well test analysis applied to a long-term data set of the Waiwera geothermal reservoir (New Zealand)

Michael Kühn and Leonard Grabow

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Cited articles

ARWB: Waiwera water resource survey – Preliminary water allocation/management plan, Auckland Regional Water Board, Technical Publication, Issue 17, 154236496, 178 pp., 1980. 
Chapman, M. G.: Investigation of the dynamics of the Waiwera geothermal groundwater system, New Zealand, Master thesis, University of Waikato, 1998. 
Cumming, J., Wooff, D., Whittle, T., and Gringarten, A. C.: Multiwell deconvolution, Society of Petroleum Engineers Journal, 17, 457–465, 2014. 
Grabow, L. and Kühn, M.: WeTeDe – Well Test Deconvolution. V. 1.0. GFZ Data Services [code], https://doi.org/10.5880/GFZ.3.4.2021.001, 2021. 
Gringarten, A. C.: Interpretation of well test transient data, in: Developments in Petroleum Engineering, Elsevier Applied Science Publishers, London and New York, 1985. 
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Short summary
The geothermal reservoir at Waiwera has been subject to active exploitation for a long time. However, the continuous production of geothermal water, to supply hotels and spas, had a negative impact on the reservoir. The aim of this work was to link the influence of the abstraction rates to the measured water level data to derive reservoir properties. For the analysis, a modified deconvolution algorithm was implemented and shown to be applicable and in accordance to results of a pumping test.