稠油油藏注超临界多元热流体研究

Study on Injection of Supercritical Multi-Thermal Fluid into Heavy Oil Reservoirs

摘要: 我国稠油资源潜力巨大，随着开采条件的逐渐复杂，常规的热采技术不断受到限制，导致采收率逐渐降低。为了解决这一难题，开展了超临界多元热流体热采稠油提高采收率的研究。根据前人的结果，超临界多元热流体作为一种新型热介质，相比于蒸汽，超临界多元热流体能与稠油发生热裂解反应，形成混相驱替等，显著地提高了稠油油藏的采收率。因此，超临界多元热流体开采稠油具有极大的潜力。

Abstract: China has significant potential in heavy oil resources; however, as exploitation conditions grow increasingly complex, conventional thermal recovery techniques face mounting limitations, resulting in declining recovery rates. To address this issue, research on enhancing heavy oil recovery using supercritical multi-thermal fluid thermal recovery has been initiated. According to previous findings, supercritical multi-thermal fluid, as a novel thermal medium, can induce thermal cracking reactions with heavy oil, form miscible displacement, and significantly enhance the recovery rate of heavy oil reservoirs compared to steam. Thus, supercritical multi-thermal fluid exploitation of heavy oil holds great promise.