A new workflow for optimization of WAG injection process in an Iranian oil reservoir

Availability of hydrocarbon gases at the field makes it attractive for gas-based EOR methods such as WAG Injection. Optimization of EOR methods requires too many simulation runs which are time-consuming and expensive. Therefore, developing a proxy model, which emulates simulator outputs, is considered as an appropriate alternative technique. In this work effects of composition changes of injection gas, WAG ratio, and slug size on produced oil and water are investigated. In addition, the optimum value of the above parameters, including some constrains, are presented using response surface methodology. Experimental design is also applied to construct different polynomial regression models as proxy models for a sector of an Iranian oil reservoir under WAG injection scenario. A new work flow is introduced for optimization of the WAG parameters, which all effecting parameters are changing simultaneously.

کلیدواژه ها:

WAG injection method ، WAG ratio ، polynomial regression ، experimental design ، response surface methodology