The filtration of hydrocarbons with differing viscosity in a porous medium with a permeability of 0.038 μm2 has been studied. It has been shown that the amount of displaced hydrocarbon increases with increasing pressure and decreases with increasing temperature. It has also been found that the duration of experiment on hydrocarbon displacement from a low-permeability porous medium increases by one-and-a-half or two times. It has turned out that the capillary pressure influences the final amount of displaced hydrocarbon. The capillary pressure has been calculated at different permeabilities of the porous medium. It has been found that the capillary pressure declines when the pressure in the system rises. It has been shown that the capillary pressure in a low-permeability porous medium does not exceed the pressure in the system, as a result of which the amount of displaced hydrocarbon lowers.
Radaev et al. (Sat,) studied this question.