A computer-implemented method of analyzing a formation traversed by a wellbore, the formation including a flushed zone and a noninvaded zone, the method comprising: determining water saturation of the flushed zone for the interval of the formation and water saturation of the noninvaded zone for the interval of the formation, and comparing the water saturation of the flushed zone for the interval of the formation and the water saturation of the noninvaded zone for the interval of the formation; characterised in that the method comprises determining total porosity and permittivity of the noninvaded zone for an interval of the formation using data obtained from at least one logging tool run in the wellbore; generating a saturation model of the interval of the formation using the determined total porosity and permittivity of the non-invaded zone together with other data obtained from at least one logging tool run in the wellbore, the saturation model including the water saturation of the flushed zone for the interval of the formation and the water saturation of the noninvaded zone for the interval of the formation; and determining, based on results of comparing the water saturation of the flushed zone for the interval of the formation and the water saturation of the noninvaded zone for the interval of the formation as provided by the saturation model, that the interval of the formation contains one of movable hydrocarbon, immobile or highly viscous hydrocarbon, and movable formation water; and outputting the determination that the interval of the formation contains one of movable hydrocarbon, immobile or highly viscous hydrocarbon, and movable formation water for use in optimization of hydrocarbon extraction operations. determining water saturation of the flushed zone for the interval of the formation and water saturation of the noninvaded zone for the interval of the formation, and comparing the water saturation of the flushed zone for the interval of the formation and the water saturation of the noninvaded zone for the interval of the formation; characterised in that the method comprises determining total porosity and permittivity of the noninvaded zone for an interval of the formation using data obtained from at least one logging tool run in the wellbore; generating a saturation model of the interval of the formation using the determined total porosity and permittivity of the non-invaded zone together with other data obtained from at least one logging tool run in the wellbore, the saturation model including the water saturation of the flushed zone for the interval of the formation and the water saturation of the noninvaded zone for the interval of the formation; and determining, based on results of comparing the water saturation of the flushed zone for the interval of the formation and the water saturation of the noninvaded zone for the interval of the formation as provided by the saturation model, that the interval of the formation contains one of movable hydrocarbon, immobile or highly viscous hydrocarbon, and movable formation water; and outputting the determination that the interval of the formation contains one of movable hydrocarbon, immobile or highly viscous hydrocarbon, and movable formation water for use in optimization of hydrocarbon extraction operations.