ABSTRACT

Shales from the Ordovician Bongabinni and Goldwyer Formations were recovered from an onshore well drilled in the Canning Basin (Western Australia) at depths ranging between 1505 and 1852 meters. The clay-rich samples were characterized with a multi-disciplinary approach aimed at describing their mineralogical and water content, their porosity and rock physics signature, as well as their geomechanical properties. Despite their chronological proximity and common geological history, the two formations show marked differences in their overall petrophysical and geomechanical behaviour reflecting their different original depositional settings.

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