In the process of CO2 flooding, the complex brine-rock reaction occurs as the reservoir rock
in the acidic circumstance formed by CO2 and brine, resulting in the changes of the …

Originally, the reservoir rock surface is hydrophilic at atmosphere pressure, because they
are generally consisted of hydrophilic minerals, such as quartz, feldspar, calcite, dolomite …

The composition of tuffaceous sandstone is complex, and it is easy to react with CO2,
resulting in significant changes in wettability during CO2 flooding. However, the change …

Injecting CO2 into underground reservoir to displace oil is a viable means of reducing
greenhouse gas emission to the atmosphere and enhancing oil recovery. To evaluate the …

Injecting CO2 into underground reservoir to displace oil is a viable means of reducing
greenhouse gas emission to the atmosphere and enhancing oil recovery. To evaluate the …

The interactions among CO2, water and rock will result in wettability changes of reservoir
rocks after CO2 is injected into formations, which will impact reservoir permeability. Contact …

To study the variations of reservoir physical properties, micro-pore structure and
permeability after CO 2 injection, a core flooding laboratory equipment was used to simulate …

In order to explore the short-term changes in reservoir lithology and physical properties, the
process of mineral corrosion, dissolution and precipitiation and the permeability variation of …

It is difficult to exploit low-permeability reservoirs, and CO2 flooding is an effective method to
improve oil recovery from low permeability reservoirs. However, in the process of CO2 …

This study is focused on addressing issues related to the interaction mechanism between
reservoir rocks and fluids during CO2 injection in heavy oil reservoirs. The results indicate …