Experimental investigation of dynamic swelling and Bond number of crude oil during carbonated water flooding; Effect of temperature and pressure

It is expected that crude oil swelling decreases as temperature increases due to a reduction of the concentration of CO2 in the CW phase in all the studied pressures. However, interesting and unexpected results was observed. That is, the swelling of crude oil drops significantly different in two distinct regions: in the first region (i.e. pressure lower than crossover), the swelling of crude oil decreases when temperature increases; in the second region (i.e. pressure higher than crossover), the behavior of the crude oil swelling versus temperature is in the opposite of that in the first region.