Borehole Breakouts and In Situ Stresses

This paper describes a study of estimating the magnitude of in situ horizontal stresses from borehole breakout data in a deep geothermal well in Australia. The knowledge of in situ dominates the shape and orientation of the underground heat exchange reservoir. Extensive borehole breakouts occurred in the granite section (depth = 3650–4421 m) of Habanero No. 1 well in Cooper Basin during drilling. The direction and dimension of borehole...