Figure 6: (a) Wellbore image logging shows the development of shear fractures on the wall, well TS1. (b) Borehole cores show the development of low-angle shear fractures at depths of 8407 m, well TS1. Note the vugs developed by dissolving enlargement along the fractures. (c) Stratigraphic controls tensional fracture patterns. Fractures develop within mechanical units and normal to the stratigraphic interfaces. The tensional fractures can serve as an effective network for fluid flow.