Numerical Study of ES-SAGD Process
The SAGD thermal process has proven to be the effective in-situ heavy oil and bitumen recovery process in Alberta, Canada. To improve the energy efficiency of the SAGD process, the ES-SAGD process was developed. In the ES-SAGD process, small amount of solvent with its evaporating temperature matching that of steam are co-injected with steam. The idea of the ES-SAGD process is that as the solvent condenses with steam along the boundary of the gas chamber, it dissolves into and mixes with the bitumen, further reducing the viscosity of the solvent bitumen mixture, thus enhances the oil recovery. In this paper, results of one SAGD baseline test and one ES- SAGD test conducted with Cold Lake live oil using a 2D highpressure/high-temperature facility are reported. Numerical history matching of the ES-SAGD test was performed. The behaviors and effects of the solvent in the ES-SAGD process were analyzed based on the numerical modeling results. Sensitivity studies were also conducted to investigate the effects of some key parameters in the numerical approach.
XIAOHUI DENG LITONG ZHAO DAVID H.-S. LAW AND TAWFIK NASR
Alberta Research Council, Edmonton, Alberta, Canada, T6N 1E4 Alberta Research Council, Edmonton, Alberta, Canada, T6N 1E4 Now with Petro-Canada, Calgary, Alberta Alberta Research Council, Edmonton, Alberta, Canada, T6N 1E4 Now with Schlumberger, Reservoir Fluids
国际会议
首届世界重油大会(The Technical Sessions of the First World Heavy Oil Conference)
北京
英文
419-433
2006-11-12（万方平台首次上网日期，不代表论文的发表时间）