OPTIMIZATION STUDY OF FOAM ASSISTED WATER ALTERNATING GAS (FAWAG) IN PRESENCE OF ASPHALTENE IN LIGHT OIL

This dissertation summarizes the overall tasks undertaken by the authors in completing the Final Year Project which entitles Optimization Study of Foam Assisted Water Alternating Gas (FAWAG) in presence of Asphaltene in Light oil. The deposition of asphaltene in light oil had been a serious predicament during the production phase. The damage caused by asphaltene deposition was extensive starting from the vicinity of wellbore up to the surface facilities. In order to mitigate the deposition, a novel approach by using FAWAG method was to be determined. The main objective of the project was the determination of the effect of FAWAG towards the asphaltene deposition and optimization of FAWAG parameters; water injection rate and surfactant concentration which result in minimum asphaltene deposition. The project also included the addition of comparison between WAG and FAWAG in mitigating asphaltene deposition. The method employed upon the completion of the project was basically performing simulation run on determining the effect of both FAWAG and WAG towards the asphaltene deposition. The result of the simulation shows that FAWAG method was more contributive compared to WAG in asphaltene deposition reduction. The asphaltene deposition is done by analyzing the Field Oil Production Total (FOPT). FAWAG model with asphaltene had more recovery than without asphaltene. An optimum surfactant concentration and water injection rate were successfully obtained.