Study of additives in oil sands recovery processes

蒸汽辅助重力泄油（SAGD）工艺在加拿大阿尔伯塔已被证明是最有前途的商业性稠油和沥青现场开采技术。在厚油层中，SAGD工艺可以采收到原始地质储量的50%以上，汽油比（SOR）为2.5 ~ 4.0。但对于小于15 m、部分衰竭、含油饱和度低的薄油层，SOR可以更高。SOR越高，回收成本越高。SAGD是资本密集型的，依赖于水（蒸汽），并且在当前的低油价下不可持续。阿尔伯塔省和加拿大政府已决定在减少温室气体（GHG）方面引领世界，并成为我们石油和天然气储备的世界能源供应商。为了满足这些相互竞争的需求，石油工业正在寻求理解蒸汽动力学，以解决与石油和天然气生产相关的挑战，同时降低成本。本项目旨在将溶剂添加剂用于SAGD过程，以减少用水量，减少GHG排放并降低生产成本，同时为在该领域应用蒸汽和溶剂创造可行的前景。

The steam assisted gravity drainage (SAGD) process has proven to be the most promising technology for thecommercial in-situ recovery of heavy oil and bitumen in Alberta, Canada. In thick reservoirs, the SAGDprocess can recover over 50% of the original oil in place (OOIP), with a steam-oil ratio (SOR) of 2.5 to 4.0.But for thin reservoirs that are less than 15 m, partially depleted and have low oil saturation, the SOR can bemuch higher. The higher the SOR, the more costly the recovery. SAGD is capital intensive, is water (steam)dependent, and is not sustainable at the current low oil prices. The governments of Alberta and Canada have amandate to lead the world in greenhouse gas (GHG) reduction and be a world supplier of energy from our oiland gas holdings. To meet these competing demands, the petroleum industry is seeking to understand reservoirdynamics with the intention to tackle challenges associated with oil and gas production while reducing costs.This project seeks to use solvent additives to the SAGD process to reduce the water used, decrease the GHGemissions and decrease production costs while creating a viable prospect to apply steam and solvents in thefield.