**Table 2.**

*Classification and constituents of foam-based fracturing fluids [47, 119, 120, 122, 123].*

CO2-based fracturing foams. Water-based foams are more popular because they are readily available and the technology requirement is low.

The major advantages of foam-based fracturing fluids are as follows [118, 120]:


The main disadvantages of foam-based fracturing fluids are given thus [120]:

