The Steam Assisted Gravity Drainage (SAGD) process is an enhanced method to extract oil from bitumen, which involvesconsists of surface and central process facilities. This paper describes the Central Process Facilities (CPF) of SAGD and proposes several retrofit plans to the Heat Exchanger Network (HEN) therein. In this approacheffort, the process integration scheme is applied to estimateion of the energy saving in HENs, and various cases are modeled in favor of a commercial simulator. Throughout this work, a minimum approach temperature of 10℃ is assumed. The results reveal that, due to the HEN optimization usingby means of the process integration, the heating and cooling duties can beare reduced to 29.68MW and 1.886MW, respectively. Compareding with the Husky case, all cases under consideredation in this study indicate a potential to reduction of at least 6% in the total cost, including the investment and operation costs.