This paper presents a study on the thermal and petrophysical characteristics of porous calcarenites, sampled from a quarry located near the historical monument of Chellah (Rabat).

We measured the thermal conductivity using box method and Thermal Conductivity Scanner (TCS). The sample’s thermal conductivity map generated by exploiting the values produced by (TCS), gives a clear view of the thermal heterogeneity of the studied rock.

The measurement of mercury intrusion porosimetry shows two porous networks (macropores and micropores); the value of porosity is between 16,52% and 34,9%. We have also found that porosity is one of the main parameters that control the transfer of heat in the calcarenites of Rabat.