特种油气藏2024，Vol.31Issue(1)：66-73,8.DOI:10.3969/j.issn.1006-6535.2024.01.008
稠油油藏蒸汽-空气复合火驱特征分析及参数优化
Characterization and Parameter Optimization of Steam-Air Compound Flooding in Heavy Oil Reservoirs
摘要
Abstract
Aiming at the problems of the low heat utilization rate and slow startup of high viscosity oil in convention-al fire flooding,taking the heavy oil reservoirs in Xinjiang Hongqian 1 Well Area as an example,the numerical sim-ulation model was used to compare the oil displacement characteristics and combustion characteristics of convention-al fire flooding and steam-air compound flooding,and the synergistic effects of the steam-air compound flooding was investigated and the injection parameters of the steam-air compound flooding were optimized through the analy-sis of the temperatures,oil saturation,and other parameters of the compound flooding in each zone.The results show that the main mechanisms to increase production and enhance efficiency are that the moist steam absorbs the heat retained in the combustion zone,becomes superheated steam,and is carried by the high-rate air across the combustion fronts so that the viscosity of the crude oil in the cold oil zone is significantly reduced,which improves the oil displacement efficiency while increasing the width,swept volume of combustion,and burning rate of the steam condensate zone;the optimization of the slug injection parameter could improve the development effect of the compound flooding,and the higher water-air ratio could make the production capacity higher;the optimal water/gas ratio should be about 3.0,and the optimal intervals between the steam injection slugs should be 90-120 d to meet the economic benefits of development because the slug injection could decrease production capacity.The re-search results are of great significance to improving the development effect of the fire flooding oil reservoirs.关键词
稠油油藏/火驱/湿式燃烧/燃烧特征/驱油机理Key words
heavy oil reservoir/fire flooding/wet combustion/combustion characteristics/oil displacement mecha-nism分类
能源科技引用本文复制引用
袁士宝,任梓寒,杨凤祥,孙新革,蒋海岩,宋佳..稠油油藏蒸汽-空气复合火驱特征分析及参数优化[J].特种油气藏,2024,31(1):66-73,8.基金项目
国家自然科学基金"基于热-流-固-化多场耦合的火驱储层热次生孔道演化及盐沉析调控机理研究"(52274039) （52274039）
陕西省自然科学基础研究重点项目"基于多点微波加热的油页岩原位热解开采方法研究"(2022JZ-28) （2022JZ-28）
西安石油大学研究生创新与实践能力培养计划"稠油油藏蒸汽-空气多介质复合火驱机理研究"(YCS23114109) （YCS23114109）
