Articles | Volume 23
Sci. Dril., 23, 1–12, 2017
Sci. Dril., 23, 1–12, 2017

Science report 30 Nov 2017

Science report | 30 Nov 2017

The Iceland Deep Drilling Project 4.5 km deep well, IDDP-2, in the seawater-recharged Reykjanes geothermal field in SW Iceland has successfully reached its supercritical target

Guðmundur Ó. Friðleifsson et al.

Related authors

The Newberry Deep Drilling Project (NDDP) workshop
Alain Bonneville, Trenton T. Cladouhos, Susan Petty, Adam Schultz, Carsten Sørlie, Hiroshi Asanuma, Guðmundur Ómar Friðleifsson, Claude Jaupart, and Giuseppe de Natale
Sci. Dril., 24, 79–86,,, 2018
Short summary

Cited articles

Albertsson, A., Bjarnason, J.Ö., Gunnarsson, T., Ballzus, C., and Ingason, K.: Part III: Fluid handling and evaluation, in: Iceland Deep Drilling Project, Feasibility Report, edited by: Friðleifsson, G. Ó., Orkustofnun Report OS-2003-007, 32 pp., available at:, 2003.
Alt, J. C., Honnorex, J., Laverne, C., and Emmermann, R.: Hydrothermal alteration of a 1 km section through the upper oceanic crust, Deep Sea Drilling Project Hole 504B: Mineralogy, chemistry and evolution of seawater-basalt interactions, J. Geophys. Res., 91, 10309–10335, 1986.
Alt, J. C., Laverne, C., Coggon, R. M., Teagle, D. A. H., Banerjee, N. R., Morgan, S., Smith-Duque, C. E., Harris, M., and Galli, L.: Subsurface structure of a submarine hydrothermal system in oceanic crust formed at the East Pacific Rise, ODP/IODP Site 1256, Geochem. Geophy. Geosy., 11, Q10010,, 2010.
Anderson, R. N., Honnorez, J., Becker, K., Adamson, A. C., Alt, J. C., Emmerman, R., Kempton, P. D., Kinoshita, H., Laverne, C., Mottl, M. J., and Newmarks, R. L.: Hole 504B, the first reference section over 1 km through Layer 2 of the oceanic crust, Nature, 300, 589–594, 1982.
Anonymous: Penrose Field Conference on Ophiolites, Geotimes, 17, 24–25, 1972.
Short summary
The Iceland Deep Drilling Project research well IDDP-2 at Reykjanes, Iceland, reached supercritical conditions at 4.5 km in January 2017. The bottom hole temperature was 426 °C and the fluid pressure was 34 MPa. Reykjanes is the landward extension of the Mid-Atlantic Ridge in Iceland, and unique among Icelandic geothermal systems in being recharged by seawater. The setting and fluid characteristics at Reykjanes provide a geochemical analog of a mid-ocean ridge submarine black smoker system.