西南石油大学学报(自然科学版)

• 石油与天然气工程 • 上一篇    下一篇

高含水油藏细分注水层段组合优选方法研究

冯其红1,王波2 *,王相1,杨雅惠1,韩晓冬3   

  1. 1. 中国石油大学(华东)石油工程学院,山东青岛266580;2. 中国石油长庆油田分公司,陕西西安710018;
    3. 中海石油(中国)有限公司天津分公司,天津塘沽300452
  • 出版日期:2016-04-11 发布日期:2016-04-11
  • 通讯作者: 王波,E-mail:wangboandzhang@163.com
  • 基金资助:

    国家重大科技专项(2011ZX05011 002);长江学者和创新团队发展计划(IRT1294)。

Study on Layer Combination Optimization Method of Subdivision Water#br# Injection in High Water-cut Reservoirs

FENG Qihong1, WANG Bo2*, WANG Xiang1, YANG Yahui1, HAN Xiaodong3   

  1. 1. School of Petroleum Engineering,China University of Petroleum,Qingdao,Shandong 266580,China;
    2. Changqing Oilfield Branch,CNPC,Xi′ an,Shaanxi 710018,China;3. Tianjin Branch(China),CNOOC,Tanggu,Tianjin 300452,China
  • Online:2016-04-11 Published:2016-04-11

摘要:

针对高含水期油藏层系细分后层间干扰依然严重、层间矛盾突出、注入水无效循环等问题,细分注水技术为
提高注水利用率和改善注水开发效果提供了有效手段,其成功的基础是根据各小层物性资料和开发动态确定合理的
层段组合。为此,采用最优分割法,综合考虑影响细分注水层段组合的各种动静态因素,将判别分析中的费歇准则思
想与反映细分注水开发效果的各种指标以及主客观权重方法相结合,引入层段直径概念,建立定量化的细分注水层段
划分方法,从而快速地确定最优层段划分方案。实例分析与油藏数值模拟表明,该方法结果可靠、计算简便,便于实际
操作,有助于指导多层油藏高含水期的细分注水调整。

关键词: 高含水油藏, 层间矛盾, 细分注水, 层段划分, 最优分割法

Abstract:

In the high water cut period,even after subdivision of reservoir layers,serious problems still remain,such as interlayer
conflict and inconsistency and invalid water cycle. to solve them,subdivision water injection is an effective approach of
improving the development effect and water-flooding sweeping efficiency. The key to success of subdivision water injection is
to determine the reasonable combination of layers according to the reservoir properties and development situations of each layer.
This article adopts optimal segmentation methods,considering the Fisher principle with expertise and the various indicators
reflecting development effect. In addition,it introduces the concept of interval diameter considering the various factors to
determine the optimal scheme for layer division,which can reflect the contradiction between layers,such as permeability,
producing degree,absorption strength,restraining barrier and so on. The comparison of instance analysis with the results of
reservoir simulation shows that this method is simple but reliable and can help adjust the subdivision water injection at high
water cut stage.

Key words: high water cut reservoir, conflict of the interlayer, subdivision water injection, layer division, optimal segmentation
methods

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