Asphaltene Deposition during CO<sub>2</sub> Flooding in Ultralow Permeability Reservoirs: A Case Study from Changqing Oil Field

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static.hindawi.com/articles/geofluids/volume-2021/6626114/figures/6626114.fig.0016a.svgz" name="6626114.fig.0016a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>WAG injection</td></tr><tr class="fig-image" id="b"><td><object data="https://static.hindawi.com/articles/geofluids/volume-2021/6626114/figures/6626114.fig.0016b.svgz" name="6626114.fig.0016b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>Continuous CO<sub>2</sub> injection</td></tr></table>

<div>Asphaltene deposition of WAG and continuous CO<sub>2</sub> injection with same injection rate.</div>

Geofluids

fig16

Figure 16

Figure 16: Asphaltene Deposition during CO<sub>2</sub> Flooding in Ultralow Permeability Reservoirs: A Case Study from Changqing Oil Field 

Geofluids

Asphaltene Deposition during CO2 Flooding in Ultralow Permeability Reservoirs: A Case Study from Changqing Oil Field

Figure 16

Asphaltene Deposition during CO₂ Flooding in Ultralow Permeability Reservoirs: A Case Study from Changqing Oil Field