Numerical Simulation of Gas Flooding, Water-Alternating-Gas Injection, and Foam-Assisted Chemical Flooding

Chemical Enhanced Oil Recovery (CEOR) methods can increase the oil recovery of a reservoir to more than 60% of the volumes originally in-situ. Typical oil recoveries range from 20% to 40% of OIIP under traditional primary and secondary recovery stages. The understanding of the mechanisms that control such complex processes is essential...

Carbonated water flooding: Process overview in the frame of co2 flooding

The main scope of the work related to the physical and dynamical processes associated with the injection of carbonated water in porous media. Carbonated water flooding is an alternative for traditional CO2 flooding. Both methods have the potential to recover any oil left behind after primary and secondary recovery while storing CO2 at the same...

Original and pyrometamorphical altered Bentheimer sandstone: Petrophysical properties, surface and dielectric behavior

Bentheimer sandstone is a quartz-rich permeable hard sedimentary rock used for core flooding experiments. When fired to stabilize clays (subjected to high temperatures), pyrometamorphical phase changes induce texture and pore framework alteration. As a consequence the new dielectric response may influence wettability. The literature regarding...

Seismic attenuation analyses of fracturing in reservoir rocks

In this study seismic wave velocity and seismic wave attenuation in dry Bentheimer sandstone, Indiana limestone, and Whitby shale are studied while continuously deforming and therefore increasingly fracturing the rock samples up until macroscopic failure. A pulse transmission technique at a central frequency of 1 MHz is used in combination with...

Determination of the CO2 gas consumption rate due to dissolution and hydrate formation in porous media

For a long time gas hydrates were considered to be a hindrance for the natural gas and oil industry. However, since natural gas hydrates deposits were discovered in 1967 the conception of natural gas hydrates as an important energy resource is well accepted. Latest estimations indicate that the amount of natural gas stored in hydrate form is...