Some rock mechanics laboratory tests at low temperature on both poorly consolidated sand and drilling cement samples have been performed. These may be useful when examining the feasibilty of storing LNG in depleted reservoirs as an alternative to more traditional methods; in the paper is presented a list of some of the questions which need to be answered in order ensure the feasibility of such a project and particular attention is given to the rock mechanics aspects of the problem. Variations of in-situ stress state due to thermal effects and behaviour of both rock and cement at low temperature are examined and some conclusion derived from simple models are given.

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