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6.8 蒸汽辅助石油提取—VAPEX 蒸汽辅助石油开采的物理学原理与蒸汽辅助重力驱基本相同(图4),井的部署也基本相似。由于气体和液体在稠油中的扩散速度慢,蒸汽辅助石油提取法,尽管目前在粘度200000cP(克里斯蒂安那湖)的油藏、粘度约几百万cP(Dover项目实施区域)的油藏及Athabasca油藏中展开了实验,但也只能单独使用,而且该方法或许也只适用于开采低粘度(<100CP)的原油。所做的一些初步试验明显表明,受微观机理的作用,蒸汽辅助采油稀释过程的扩散速度是不受限制的。特别在倾斜面,石油一经稀释,就会溶化流走,那些新的未稀释的原油,总会不断受到稀释流体的有效作用。毫无疑问,蒸汽辅助石油开采技术可与蒸汽辅
6.8 Steam Assisted Petroleum Extraction - VAPEX The principle of steam assisted petroleum extraction is basically the same as that of steam assisted gravity flooding (Figure 4) and the well deployment is similar. Due to the slow diffusion of gases and liquids in heavy oils, steam-assisted petroleum extraction, while currently present in reservoirs with viscosities of 200,000 cP (Lake Christiania), has a viscosity of about several million cP (Dover Project Area) reservoirs and Experiments were conducted in the Athabasca reservoir, but only on its own, and the method may only be suitable for the exploitation of low viscosity (<100 CP) crude oil. Some of the preliminary tests made have clearly shown that the diffusion rate of steam-assisted recovery is unrestricted by the action of the micro-mechanism. Especially on sloping surfaces, once the oil is diluted, it will melt away and the new, undiluted crude will always be effectively affected by the dilution fluid. There is no doubt that steam-assisted petroleum extraction technology can be combined with steam