摘要
辽河油区中深层稠油油藏蒸汽吞吐后,多采用蒸汽驱方式提高采收率。但蒸汽驱开发初期存在一个较长的低产期,蒸汽驱油汽比和原油商品率均较低。如何提高蒸汽驱效果,已成为辽河油区大面积转蒸汽驱急需解决的问题。以高3块为例,运用数值模拟方法,进行了"火烧油层段塞+蒸汽驱"组合式开采可行性研究,并确定该技术可以作为稠油油藏蒸汽吞吐后大幅度提高原油采收率的有效接替技术。
After cyclic steam stimulation in mid-deep heavy oil reservoirs in Liaohe Oilfield,steam flooding is usually adopted to improve recovery factor.However,in early steam flooding stage,there is a long period of low production,and both oil-steam ratio and commercial rate are low.How to improve steam flooding has become an urgent need in Liaohe oil province for converting to steam flooding in a large scale.Feasibility study of compound recovery by 'in situ combustion slug + steam flooding' has been conducted with Block Gao3 as an example and using numerical simulation.Moreover,it is determined that this method can be used as a replacing technique to improve oil recovery factor after cyclic steam stimulation.
出处
《特种油气藏》
CAS
CSCD
2007年第5期65-69,共5页
Special Oil & Gas Reservoirs
关键词
火烧油层段塞
蒸汽驱
稠油油藏
组合式开采
高3块
in situ combustion slug
steam flooding
heavy oil reservoir
compound recovery
Block Gao3
