摘要
大庆油田杏4-6区自1967年投入开发至今,先后经历了3次加密开发过程。分析3次加密后的开发动态资料,得出了评价加密井提高采收率效果的实用方法。3次加密后的技术采收率分别为40.1%、53.0%和57.8%.从宏观和微观两个方面,对谢尔卡切夫的井网密度法原式进行推导;并利用大庆油田杏4-6区等5个油田的实际数据,建立了水驱开发油田采收率和井控面积的相关经验公式。将杏4-6区的流度值和平均井控面积值代入相关经验公式,得到一次加密后的采收率为38.7%,这与产量递减法确定的采收率40.1%很接近,表明相关经验公式的适用性。
Xin4-6 region in Daqing oilfield has undergone three infill development processes since 1967. The production performance data from these infill processes are analyzed followed by proposing a practical method for evaluation of enhanced oil recovery (EOR) from infill wells. The technical EOR from them is 40.1%, 53.0% and 57.8%, respectively. In microscopic and macroscopic aspects, the original formula of Selkachev's network density method is deduced. Using the data from five oilfields in Daqing (Xin4-6 region), Romashikino, Dumaz, Bovilin and East-Texas, a new relative empirical formula for determination of EOR of waterflooding oiffield and well-controlled area is established. The mobility and weN-controlled area in Xin4-6 region are substituted into this formula, the primary infilled recovery efficiency equals to 38.7%, which is close to that given by production decline method (40.1%), showing the reliability or practicability of the relative empirical formula.
出处
《新疆石油地质》
CAS
CSCD
北大核心
2009年第6期705-709,共5页
Xinjiang Petroleum Geology
关键词
注水
开发
加密井
可采储量
采收率
waterflooding
development
infill well
recoverable reserve
recovery efficiency
EOR