石油钻采工艺2016，Vol.38Issue(6)：852-858,7.DOI:10.13639/j.odpt.2016.06.027
稠油油藏气体-泡沫辅助注蒸汽实验与数值模拟
Numerical simulation and tests of gas-foam assisted steam-lfooding for heavy oil development
摘要
Abstract
With consideration of low thermal conducting efifciency induced by insufifciency in energy and severe steam channel-ing during steam stimulation, researches have been conducted through indoor physical simulation and numerical simulation by adding gas and high-temperature foam to enhance performances of steam stimulation. First of all, comprehensive foam indicators have been introduced to identify the optimal foaming agent. Secondly, four indoor parallel dual-pipe tests, namely pure steam lfooding, steam-lfue gas foam lfooding, steam-nitrogen foam lfooding and steam-nitrogen lfooding, were performed. Test results show under identical lfood-ing conditions, both steam-lfue gas foam lfooding and steam-nitrogen foam lfooding can effectively seal off high-permeability channels to mobilize low-permeability channels. Compared with pure steam lfooding, the new technique can enhance oil recovery by 28.98%and 26.04%, respectively. The steam-nitrogen lfooding displayed limited proifle-control performances because it failed to mobilize low-permeability channels effectively. It has improved oil recovery by 10.56%higher than that of pure steam lfooding. With consideration of the results of physical simulation, numerical simulation has been performed to study the impact of formation parameters on the produc-tion performances of lfue gas-foam assisted stimulation and pure steam stimulation. Test results show lfue gas-foam assisted stimulation has outstanding advantages over pure steam stimulation for development of thin and heterogeneous heavy oil reservoirs because it may effectively enhance performances of steam stimulation. After optimization of the parameters for lfue gas-foam assisted steam stimulation in Jinglouling Block, Henan Oilifeld, the daily steam injection volume has been up to100 m3, gas/steam ratio to 12 and soaking time to 7 days.关键词
稠油油藏/蒸汽吞吐/泡沫驱/烟道气/氮气/平行双管实验/数值模拟Key words
heavy oil reservoir/steam stimulation/foam lfooding/lfue gas/nitrogen/parallel dual-pipe test/numerical simulation分类
能源科技引用本文复制引用
吴正彬,刘慧卿,庞占喜,吴川,高民..稠油油藏气体-泡沫辅助注蒸汽实验与数值模拟[J].石油钻采工艺,2016,38(6):852-858,7.基金项目
国家自然科学基金“裂缝型稠油油藏非等温渗吸机理及动力学模型”（编号51274212）；国家自然科学基金“多孔介质中预交联凝胶颗粒渗滤规律及动力学模型研究”（编号51474226）。 （）
