【摘要】 为解决单一注蒸汽开发技术难以突破在稠油深部的携热运移问题，提出加入CO₂与化学剂协同辅助注蒸汽开发技术。该技术不仅可降低蒸汽无效散热，还能扩大蒸汽携热运移距离。同时，以CO₂辅助蒸汽热采并用于稠油开发的方式可有效捕获和封存CO₂,有助于控制温室气体排放。结果表明：CO₂与化学剂注入后能够吸附在蒸汽冷凝介质表面形成隔热膜，阻碍蒸汽与传热介质间的热交换，“缓释”蒸汽热量，增加蒸汽携热运移距离，从而起到动用深部地层原油的目的；CO₂与化学剂协同作用下，蒸汽热损降低了5.48%,采收率提高了14.5%;研究结果可为气体与化学剂辅助蒸汽驱开发方式的优化提供理论指导。更多还原

【Abstract】 In order to solve the problem that steam injection alone is difficult for heat transport into the deep layers of heavy oil reservoir, a steam injection technique assisted by adding carbon dioxide（CO₂） and chemical agents was proposed and investigated in this study. This technique can not only reduce the ineffective heat dissipation of steam, but also can expand the heat transport distance of steam. At the same time, CO₂ can be effectively captured and sequestered in the heavy oil reservoir, which is beneficial for greenhouse gas emission reduction. The results show that CO₂ and chemical agents can adsorb on the surface of steam condensing medium to form a heat insulation film, which can hinder the heat exchange between steam and heat transfer medium, slow down the heat release process, increase the heat transport distance of the steam, and thus mobilize the heavy oil from the deep formation. The experimental results show that the steam heat loss can be reduced by 5.48% with oil recovery rate increased by 14.5% under the synergistic effect of CO₂ and chemical agents. The results can provide theoretical guidance for the optimization of the gas and chemical-assisted steam flooding technique.更多还原