Technical Paper: Success and the Learning Curve Effect in Geothermal Well Drilling - A worldwide Survey

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Presentation Date: 2012


This paper investigates the success achieved in terms of well capacity and the presence of any "learning curve effect" in drilling geothermal wells. This investigation is statistical and is based on technical data from a majority of the more than 4,000 geothermal wells drilled worldwide to date. These well data have been retrieved from the accumulated data archives of GeothermEx with the data confidentiality maintained by withholding the names of individual wells and fields except where the relevant data are publicly available. Using an arbitrary definition of a successful production well as being of 3MW or higher in capacity, the database yielded 869 successful wells with reasonably verifiable production data. A histogram of this data shows a peak at 3 to 5 MW, and a median of 7 MW.

Technical Paper from PROCEEDINGS, Thirty-Seventh Workshop on Geothermal Reservoir Engineering - Stanford University, Stanford, California, January 30 - February 1, 2012

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