Temperature changes have been shown to impact the contact angle of various different systems such as molten solder on a copper substrate . The temperature effect is due to the reaction in the liquid/solid interface, which causes alteration of surface tension and thereby alters the equilibrium contact angle and wettability. The methane adsorption capacities of organic matter have been found to reduce with increase in temperature (Chen et al. 2017). Present publications do not quantify quantify the effect of temperature on the wettability of kerogen. Coal was found to have decreasing water-wettability with increase in pressure ), however the effects of pressure were found be small for calcite/water/decane system . I propose to determine and model the effect of reservoir temperatures and pressure on the wettability of kerogen using molecular simulation. This task will be used to evaluate objective II and verify hypothesis II.