Study of additives in oil sands recovery processes

蒸汽辅助重力排水(SAGD)工艺已被证明是最有前途的 加拿大艾伯塔省重油和沥青的商业原地回收。在厚油层中，SAGD 该工艺可回收50%以上的原油，汽油比(SOR)为2.5~4.0。 但对于小于15米、部分枯竭且含油饱和度较低的薄油层，可采用 高得多。SOR越高，复苏的成本就越高。SAGD是资本密集型的，是水(蒸汽) 依赖，在目前的低油价下是不可持续的。艾伯塔省和加拿大政府有一个 在减少温室气体(GHG)方面走在世界前列，成为世界石油能源供应商 和天然气持有量。为了满足这些相互竞争的需求，石油行业正在寻求了解油藏 动态，目的是在降低成本的同时应对与石油和天然气生产相关的挑战。 本项目寻求在SAGD过程中使用溶剂添加剂，以减少用水量，减少温室气体排放 排放和降低生产成本，同时创造了将蒸汽和溶剂应用于 菲尔德。

The steam assisted gravity drainage (SAGD) process has proven to be the most promising technology for the commercial in-situ recovery of heavy oil and bitumen in Alberta, Canada. In thick reservoirs, the SAGD process 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 be much 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 a mandate to lead the world in greenhouse gas (GHG) reduction and be a world supplier of energy from our oil and gas holdings. To meet these competing demands, the petroleum industry is seeking to understand reservoir dynamics 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 GHG emissions and decrease production costs while creating a viable prospect to apply steam and solvents in the field.