Mobility determination of supercritical state CO2 in porous rock samples

One of the methods to decrease CO2 emission is the capture of the concentratedly emitted carbon dioxide and its storage in geological formations. The depleted oil and gas fields have already proven that they are capable of trapping the fluids for millions of years, so there’s the biggest chance of long‐time safe carbon dioxide storage in these reservoirs. Considering the CO2 storage in geological formations two important questions arise. How much CO2 can be stored in a selected depleted or partially depleted oil or gas reservoirs? How much CO2 can be injected through an existing injection well? To calculate the injectivity of the existing well, the mobility of the CO2 at reservoir conditions must be known. In the RIAES a new laboratory equipment was developed to measure the mobility of the supercritical state CO2 gas in porous reservoir rock samples. With this laboratory equipment some test measurements were performed, to determine the mobility of pure carbon dioxide and polluted carbon dioxide gas. The main part of the developed laboratory devices, and as an example, the results of test measurements are shown in this paper.