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

大段合采油井层间干扰主控因素研究

张继成1,2 *,何晓茹1,2,周文胜2,3,耿站立2,3,唐恩高2,3   

  1. 1. 东北石油大学石油工程学院,黑龙江大庆163318
    2.“海洋石油高效开发”国家重点实验室,北京朝阳100027
    3. 中海石油(中国)有限公司北京研究中心,北京朝阳100027
  • 出版日期:2015-08-01 发布日期:2015-08-01
  • 通讯作者: 张继成,E-mail:zhangjc777@163.com
  • 基金资助:

    海洋石油高效开发国家重点实验室开放基金(CCL2013RCPS0236GNN);黑龙江省自然科学基金(E201407);东北石油大学研究生创新
    科研基金(YJSCX2014 013NEPU)

Main Controlling Factors of Interlayer Interference in Big Intervals Commingled Production Oil Wells

Zhang Jicheng1,2*, He Xiaoru1,2, Zhou Wensheng2,3, Geng Zhanli2,3, Tang Engao2,3   

  1. 1. College of Petroleum Engineering,Northeast Petroleum University,Daqing,Heilongjiang 163318,China
    2. State Key Laboratory of Offshore Oil Exploitation,Chaoyang,Beijing,100027,China
    3. Beijing Research Center,CNOOC(China)Co.,Ltd.,Chaoyang,Beijing,100027,China
  • Online:2015-08-01 Published:2015-08-01

摘要:

针对大段合采油井储层层间非均质性严重的问题,开展了层间干扰研究,确定层间干扰的主控因素。结合现
场试油实践,以层间干扰系数作为定量评价层间干扰程度的指标,对部分井的产能测试结果进行了分析,发现流压、生
产压差、含水率等因素均可对层间干扰程度造成影响。收集油田数据资料,计算了渗透率级差、厚度级差、层数、地层
压力系数级差、生产压差级差、平均黏度、孔隙度级差、流压级差等因素。采用复相关系数法对影响因素进行了初筛
选,根据基于熵权的灰色关联分析法计算了筛选后因素与层间干扰系数间的关联度,确定出层间干扰的主控因素,分
别为渗透率级差、层数、静压系数级差、合测含水率、生产压差级差和流压级差。

关键词: 层间干扰, 主控因素, 层间干扰系数, 复相关系数, 基于熵权的灰色关联

Abstract:

The oil wells with the commingled production with big intervals faced with the problem of serious interlayer heterogeneity.
By analyzing interlayers interference,the main controlling factors of interlayer interference are determined. Combining
field test practice,and by using interlayer interference coefficient as quantitative evaluation indicator of the degree of interlayer
interference,we carried out productivity test on some wells and found that the flowing pressure,drawdown pressure,water-cut
and other factors can affect the degree of interlayer interference. We collect data,and calculate the factors,including permeability
contrast,thickness contrast,layers,formation pressure coefficient contrast,drawdown pressure contrast,average viscosity,
porosity contrast,flowing pressure contrast and other factors. The multiple correlation coefficient method was adopted to screen
the factors. According to the grey correlation method based on weighted entropy,the correlation degree between the factors
and the interlayer interference coefficient was calculated. Permeability contrast,layers,formation pressure coefficient contrast,
commingled water cut,drawdown pressure contrast,flowing pressure contrast were determined as the main control factors.

Key words: interlayer interference, main controlling factors, interlayer interference coefficient, multiple correlation coefficient
method,
grey correlation method based on weighted entropy