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Permeability

Permeability is one of the key parameters when talking about reservoir or caprock quality. We offer both, permeability to gas and permeability to liquid. Gas permeability measurements can be carried out with e.g. air, nitrogen or helium. Cubic and cylindrical specimens of variable size can be investigated under ambient as well as stressed conditions. Measurement of stressed permeability within a triaxial cell is in particular useful for samples from deep bore holes which tend to micro crack formation under ambient conditions due to stress release. Gas and fluid flow along these micro cracks will lead to artificially high permeabilitiy values. Measurements done under simulated in situ conditions within a triaxial cell close these micro cracks and allow for determination of the correct in situ permeability. Moreover, we provide Klinkenberg-corrected permeability values determined based on the Law of Darcy.

For specimens with permeability higher than 5*10-18 m2 we offer additional flow monitoring with highly accurate and fast-reacting volume flow meters. This can be done while continuing with deformation during triaxial stress-strain tests.

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News

Tests results for the first deep borehole Bülach are now published on NAGRA's website

In September 2019 the Swiss National Cooperative for the Disposal of Radioactive Waste (NAGRA) commisioned Gesteinslabor with UCS, Brazilian and triaxial tests on neighbouring rocks of the Opalinus Clay - the rock which will host Switzerland's future facilities for nuclear waste disposal.

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Gesteinslabor receives funding grant for the development of a novel test rig to determine capillary threshold pressure with hydrogen

Gesteinslabor receives funding from BMWi for the development of a new test rig. With this funding, our company will open up a new business field in renewable energies by implementing an innovative technology to determine the capillary threshold pressure with hydrogen on cap rock of underground gas storage facilities.

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