机构地区: 中国石油天然气集团公司
出 处: 《低渗透油气田》 2011年第1期70-72,87,共4页
摘 要: 与同步注水和滞后注水相比,超前注水这种先注后采的开发方式,在合理补充地层能量、提高地层压力及保持油井较高生产能力等方面的优势更加明显。研究表明,超前注水可建立有效的压力驱替系统,降低油井初始含水率,有利于提高最终采收率。以长庆油田三叠系长6、长8油藏为例,分析超前注水技术在该类油藏中的应用效果.认为超前注水是提高低渗透油藏最终采收率的重要途径之一。 The research indicates that an effective pressure displacement system can be established by waterflooding in advance to reduce initial water cut of oil well, being favorable for enhancing ultimate recovery ratio. This paper takes Triassic Chang6 and Chang8 oil reservoirs of Changqing oilfield as examples to analyze tile application effect of waterflooding in advance techniqt, e in this category of oil reserwoirs. It is considered that waterflooding in advance is one of the important ways to enhancing ultimate recovery ratio of low permeability oil reservoirs.
领 域: [石油与天然气工程]