ارزيابي عملكرد تزريق آب در مخازن نفتي با استفاده از شبيه‌سازي CMG و تحليل رفتار فازي

This study proposes a numerical investigation of the performance of water injection in oil reservoirs by integrating detailed phase behavior analysis with reservoir simulation using CMG. The work begins with a comprehensive characterization of the reservoir fluid phase behavior through PVT data, including pressure–volume–temperature relationships, phase envelopes, an‎d key parameters such as bubble point pressure, solution gas–oil ratio, viscosity, an‎d density. The same PVT data are then used to construct a base case reservoir model, in which conventional production an‎d water injection scenarios are simulated in CMG in order to eva‎luate pressure support, displacement efficiency, an‎d overall oil recovery. Subsequently, the study compares the evolution of fluid phase behavior before an‎d after water injection by examining changes in phase distributions an‎d fluid properties under varying pressure an‎d saturation conditions. Several sensitivity cases will be designed by modifying selec‎ted PVT an‎d operational parameters to assess their influence on waterflood performance indicators, such as cumulative oil production, water cut, an‎d recovery factor. The primary objective is to quantify how accurately modeled phase behavior affects the prediction of water injection performance an‎d to provide practical guidelines for coupling PVT/phase behavior analysis with CMG based reservoir simulation for improved decision making in field development.

روح اله هاشمي

محسن محمدي , حميدرضا شاه وردي