Rock Mechanical Laboratory

Stress field related and structural related permeability

With the determination of the uniaxial compressive strength of orientated drill cores from outrops the stress field and the structural conditions of the formation can be investigated. The relation between stress field and structural condition (faults, joints, etc.) also controls the permeabilty of a formation. With the help of this analyses it is possible to infer permeabilities for the investigated formations. With the Thermo-Triax-Cell these assumptions can be validated.

The following figures showing the uniaxial compressive strength test rig and a schematic sketch to distinguish between stress field related permeability and permeability controlled by structural elements.