Geothermal well drilling costing - a case study of Menengai geothermal field

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Titill: Geothermal well drilling costing - a case study of Menengai geothermal fieldGeothermal well drilling costing - a case study of Menengai geothermal field
Höfundur: Geothermal Development Company Ltd. ; KenGen ; Jarðhitaskóli Háskóla Sameinuðu þjóðanna ; United Nations University ; United Nations University, Geothermal Training Programme ; Kivure, Wellington
URI: http://hdl.handle.net/10802/14468
Útgefandi: United Nations University
Útgáfa: 2016
Ritröð: United Nations University., UNU Geothermal Training Programme, Iceland. Short Course ; SC-23
Efnisorð: Jarðhiti; Bortækni; Jarðboranir; Jarðhitanýting; Kostnaðaráætlanir; Kostnaðargreining; Kenía
ISSN: 1670-794x
Tungumál: Enska
Tengd vefsíðuslóð: http://os.is/gogn/unu-gtp-sc/UNU-GTP-SC-23-0909.pdf
Tegund: Tímaritsgrein
Gegnir ID: 001483036
Athugasemdir: Presented at SDG Short Course I on Exploration and Development of Geothermal Resources, organized by UNU-GTP, GDC and KenGen, at Lake Bogoria and Lake Naivasha, Kenya, Nov. 10-31, 2016.
Útdráttur: The cost of drilling geothermal wells forms an important component of any geothermal project. It accounts for 40% of the total investment cost for a new high temperature geothermal project (Kipsang, 2013). Proper well costing is paramount as it will have a direct bearing on the costing of steam and subsequently cost of electricity. Well costing therefore is important in future planning and budgeting for geothermal projects. It can also help in drilling economics such analysis of drilling cost per meter or foot which will in turn help in drilling optimization studies. Statistical analyses of historical drilling costs data show that the depth of the well is the major parameter explaining its overall cost. It is estimated that 56 percent of cost variability of geothermal wells is linked to depth (Cedric, 2010). It has also been shown that besides depth, other factors such as total drilling duration and well configuration influence costs of geothermal wells. The Scope of this paper will dwell on major cost components of a geothermal well


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