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 inc...

Asphaltenes are the heavy fraction of fossil fuels, whose characterization remains a very difficult and challenging issue due to still-persisting uncertainties about their structure and/or composition molecular weight. Asphaltene components highly condensed aromatic molecules having some heteroatoms aliphatic functionalities. Their weights distribution spans in wide range, from hundreds million...