Results of Televiewer Logging in Well K-18 in Krafla High Temperature Area, NE-Iceland

• Main Author: Árnadóttir, Sigurveig
• Format: Report
• Language: English
• Published: Zenodo 2018
• Subjects: geothermal energy; exploration; geophysics; krafla; televiewer logging; well K-18; high temperature area; iceland; Iceland
• Online Access: https://doi.org/10.5281/zenodo.1291141

Televiewer logging was performed in well K-18 in Krafla high temperature field at 470 – 2180 mdepth in October 2014 as a part of the IMAGE (Integrated Methods for Advanced GeothermalExploration) European project. Results of structural analysis on grounds of the Televiewer dataindicate that joints and fractures within the logged interval predominantly strike from NW-SE to N-Sand dip towards NE/E. Fractures and joints observed in the Televiewer images are filled/cementedor tight/discontinuous, and in several cases partially open. No major open fractures were observedwithin the logged interval. Interfaces observed in the Televiewer images are considered to markintrusion boundaries, and can be roughly divided into steeply dipping N-S and NE-SW strikinginterfaces (dykes) and sub-horizontal ~WNW-ESE striking, ~SSW-dipping interfaces (sill intrusions). The latter are in some cases non planar, which may suggest that magma intruded a still unsolidifiedintrusive material.