In this work the likelihood of asphaltene deposition problems during dynamic displacement of oil by natural gas in unconsolidated porous media is experimentally inspected. The two different rock materials, limestone and sandstone, are used as a representative of porous media. Dynamic flow experiments indicate that the increase of natural gas injection increases asphaltene deposition in the unco...

Asphaltene precipitation and deposition can occur at both the surface subsurface levels, leading to formation of organic-based scales. also lead changes in petrophysical properties such as wettability, which affects ultimate recovery. is linked fluid composition driven by pressure drawdown temperature variation across reservoir. Thus, asphaltene adversely influence Thermal recovery methods are ...