رده بندي پارامترهاي عملياتي موثر بر بازدهي فرايند تزريق دوره اي بخار در مخازن نفت سنگين

Ranking of Effective Operational Parameters on Performance of Cyclic Steam Injection in Heavy Oil Reservoirs

Specification of the influence of design factors of cyclic steam injection can be used as an effective tool for optimization of performance and operational cost of this process in heavy oil reservoirs as main candidates for enhanced oil recovery by this method. For this purpose, a comprehensive simulation study for ranking operational parameters has been conducted. In simulation study of a typical Iranian heavy oil reservoir, an analytical model with capability of modeling of heat transfer and heat loss in surface, wellbore and reservoir for determination of temperature profile in heated zone, and estimation of production rate in drainage area of well model has been developed and tuned against available data. Selected parameters for this study are steam injection rate or steam slug size, soaking time, steam temperature, and steam quality. Response Surface Methodology has been used for processing and ranking of dimensionless parameters regads to cumulative oil production in the different injection and production scenarios. It is concluded that the design parameters in order of influence on performance of process are steam slug size, steam quality, soaking time, and steam temperature.