Sadiq J. Zarrouk is an Associate Professor of Geothermal Engineering, the geothermal PGCertcourse director and the Geothermal Institute co-director at the Department of Engineering Science and Biomedical Engineering, The University of Auckland, New Zealand.

Sadiq has an applied approach to geothermal research with ongoing collaboration and joint publications with several universities and research institutions in Belgium, Germany, Iceland, Indonesia, Iran, USA, Canada, Japan, Kenya, Philippines, Australia, Turkeyi and El Salvador with more than 200 publications in journals and conference proceedings, eight patents and two books.

Sadiq is an elected member of the International Geothermal Association (IGA) board of directors, 2013-2020 and the New Zealand Geothermal Association, 2011-2024. He has been a member of the organising committee of the New Zealand Geothermal Workshop since 2006 and, since 2024, the Editor-in-Chief of Geothermics.

Sadiq has recognised extensive research and commercial field experience in geothermal and reservoir engineering, with more than 30years of experience in geothermal energy training and research. He was involved in the Icelandic deep drilling project in 2001 and has several publications on supercritical and near-critical reservoirs.

Sadiq and the University of Auckland team will work on modelling supercritical behaviour from well testing during drilling, completion testing and production testing. Another stream will involve the District fracture network (DFN) modelling, Brittle-Ductile transition (BDT) zone and different permeability stimulation methods.

The aim is to assess how supercritical wells will behave across the different testing stages and to determine the adaptivetesting methods and well-testing analyses to be applied. Also, apply learnings from IA, DFN, and BDT when investigating permeability enhancement to ensure thewell produces commercial levels of power, thereby justifying the drilling offuture wells.