prediction of asphaltene deposition due to natural depletion and miscible gas injection processes in petroleum reservoirs

Fluid Phase Equilibria 247 (2006) 182–189 Application of association theory to the prediction of asphaltene deposition: Deposition due to natural depletion and miscible gas injection processes in petroleum reservoirs M. Vafaie-Sefti∗, S. A.... More

Fluid Phase Equilibria 247 (2006) 182–189 Application of association theory to the prediction of asphaltene deposition: Deposition due to natural depletion and miscible gas injection processes in petroleum reservoirs M. Vafaie-Sefti∗, S. A. Mousavi-Dehghani Department Of Chemical Engineering, Tarbiat Modarres University, P. O. Box 14155-4838, Tehran, Iran Received 25 June 2006; accepted 26 June 2006 Abstract Asphaltene flocculation and deposition during natural depletion and/or miscible gas injection in enhanced oil recovery (EOR) processes is a common problem in oilfields throughout the world. The complexity of the asphaltene structure and the high affinity of these molecules to absorb on surfaces, such as rock surfaces, creates difficulties in deposition prediction. There are numerous models to predict the various mechanisms related to asphaltene precipitation, flocculation, aggregation or deposition in static state. Each model can predict only a part of the asphaltene deposition ph Less