Preparation of Oil-Based Foam Gel with Nano-SiO<sub>2</sub> as Foam Stabilizer and Evaluation of Its Performance as a Plugging Agent for Fractured Shale

<div>(a) The change in leakage over time at different temperatures. (b) The plugging rate of the plugging agent at different temperatures.</div>

Geofluids

fig20

Figure 20

Figure 20: Preparation of Oil-Based Foam Gel with Nano-SiO<sub>2</sub> as Foam Stabilizer and Evaluation of Its Performance as a Plugging Agent for Fractured Shale 

Figure 20 | Preparation of Oil-Based Foam Gel with Nano-SiO2 as Foam Stabilizer and Evaluation of Its Performance as a Plugging Agent for Fractured Shale 