西南石油大学学报(自然科学版)

• 博导论评 • 上一篇    

基于油藏流场强度的井网优化方法研究

冯其红1,王波2 *,王相1,王守磊3,韩晓冬4   

  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. 中海油研究总院,北京朝阳100028
    4. 中海石油(中国)有限公司天津分公司,天津塘沽300452
  • 出版日期:2015-08-01 发布日期:2015-08-01
  • 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)。

Optimization of Well Patterns Based on Flow Field Intensity

Feng Qihong1, Wang Bo2*, Wang Xiang1, Wang Shoulei3, Han Xiaodong4   

  1. 1. School of Petroleum Engineering,China University of Petroleum(East China),Qingdao,Shandong 266580,China;
    2. Changqing Oilfield Branch,CNPC,Xi′ an,Shaanxi 710018,China;3. CNOOC Research Institute,Chaoyang,Beijing 100028,China
    4. Tianjin Branch(China),CNOOC,Tanggu,Tianjin 300452,China
  • Online:2015-08-01 Published:2015-08-01

摘要:

受地质情况、井网条件、流体物性影响,在注水开发油藏中的某些部位会出现以注入水快速突破、注入水无效
循环等为特征的不均衡驱替。对于非均质油藏,为了实现相对较高的均衡驱替,获得更高的原油采收率,布井时必须
充分考虑储层的非均质性进行井网优化设计。通过分析,选取油藏流场强度变异系数最小作为优化目标,建立了井网
优化数学模型,使用遗传算法求解数学模型,获取与储层非均质匹配的最优井网。油藏实例进行的分析结果表明,用
优化后的井网进行生产,水驱状况得到改善,提高了采收率。

关键词: 井网优化;均衡驱替;油藏流场;变异系数, 提高采收率

Abstract:

With the impact of geology,well patterns and fluid properties,injected water will break fast and circulate invalidly
in somewhere of the water flooding reservoir,which is the feature of unbalanced displacement. However,in order to pursue
a relatively higher balanced displacement and attain more oil recovery for heterogeneous reservoirs,well pattern optimization
design must consider the heterogeneity of reservoirs. Based on reservoir flow field,the optimal object is to minimize the
coefficient of variation of streamline field intensity in the mathematical model. By solving the mathematical model of well
pattern optimization with genetic algorithm to match the heterogeneity of reservoir,the optimal well allocation can be obtained.
The analysis on the application of above theory in oil reservoir shows that the optimal well allocation can improve waterflooding
situation and recovery.

Key words: well pattern optimization;equilibrium displacement;reservoir flow field;coefficient of variation, enhanced oil
recovery