Micromodels have been successfully used to observe various displacement processes at low temperatures and pressures and to understand fluid transport mechanisms within porous media. Previous research on physical pore model studies was reviewed, and the advantages and limitations of various techniques used are discussed as well as techniques used in the design, construction, and operation of the models. Finally, the possible use of micromodels to study the fluid displacement process at high temperatures and moderate pressures, such as those commonly encountered in steamflood enhanced oil recovery projects, was examined. An experimental system for studying high-temperature displacement processes in micromodels is discussed. Although no attempt to date has been made to investigate steam EOR processes in micromodels, experiments in micromodels at elevated temperatures should provide qualitative information on the effects of temperature on important process varibles. 77 refs., 2 figs.