ABSTRACT: The mechanical behaviour of a core sample is a result of the intrinsic properties of the rock and its stress history. In particular, the stress release during coring has a profound effect on core behaviour. Here, previous experiments using synthetic sandstone formed under stress are simulated by a discrete particle model (PFC - Particle Flow Code). The simulations confirm the physical understanding of core damage mechanisms, and also points further into how core damage effects may be quantified and corrected.

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