TY - JOUR ID - 6079 TI - Experimental Investigation and Modeling of Asphaltene Precipitation Due to Gas Injection JO - Iranian Journal of Chemistry and Chemical Engineering JA - IJCCE LA - en SN - 1021-9986 AU - Moradi, Siyamak AU - Rashtchian, Davood AU - Ganjeh Ghazvini, Mostafa AU - Emadi, Mohammad Ali AU - Dabir, Bahram AD - Faculty of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran, I.R. IRAN AD - Research and Technology Directorate, National Iranian Oil Company (NIOC), Tehran, I.R. IRAN AD - Faculty of Chemical Engineering, Amirkabir University of Technology, Tehran, I.R. IRAN Y1 - 2012 PY - 2012 VL - 31 IS - 1 SP - 89 EP - 98 KW - Asphaltene precipitation KW - Miscible gas injection KW - Scaling equation DO - 10.30492/ijcce.2012.6079 N2 - Asphaltene instability is one of the major problems in gas injection projects throughout the world. Numerous models have been developed to predict asphaltene precipitation; The scaling equation is an attractive tool because of its simplicity and not involving complex properties of asphaltene. In this work, a new scaling model is presented to account  for asphaltene precipitation due to gas injection at reservoir conditions. Extensive published data from literature have been used in model preparation. To check predictive capability of the equation, miscible gas injection experiments are conducted for a southwest Iranian oil reservoir. Experimental results show that methane injection has significant effect on asphaltene precipitation and direct  effect of temperature is less severe than other parameters. In addition to the accuracy and simplicity, the proposed equation provides universal parameters which make this approach novel for evaluation of future gas injection projects when simple PVT data are available. UR - https://ijcce.ac.ir/article_6079.html L1 - https://ijcce.ac.ir/article_6079_8320b4294344429100b6198669807bd6.pdf ER -