新疆石油地质

新疆石油地质 ›› 2009, Vol. 30 ›› Issue (6): 705-709.

• 油藏工程 • 上一篇    下一篇

加密井提高注水开发油田采收率的评价方法

陈元千, 王小林, 姚尚林, 邹存友   

  1. 中国石油 勘探开发研究院,北京 100083
  • 收稿日期:2009-04-24 发布日期:2020-10-23
  • 作者简介:陈元千 （1933-）,男,河南兰考人,教授级高级工程师,油气田开发, （Tel）13651199107.

A Method for Evaluation of EOR of Waterflooding Oilfield by Infill Well Process

CHEN Yuan-qian, WANG Xiao-lin, YAO Shang-lin, ZOU Cun-you   

  1. Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China
  • Received:2009-04-24 Published:2020-10-23

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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。

关键词: 注水, 开发, 加密井, 可采储量, 采收率

Abstract: 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 oilfield and well-controlled area is established. The mobility and well-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.

Key words: waterflooding, development, infill well, recoverable reserve, recovery efficiency, EOR

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