西南石油大学学报(自然科学版) ›› 2011, Vol. 33 ›› Issue (2): 109-114.

• 石油与天然气工程 • 上一篇    下一篇

裂缝型低渗透油藏井网调整方式研究

1, 2 宋考平3 张英芝4 杨二龙3 王卫国4

  

  1. 1.“提高石油采收率”国家重点实验室 ? 中国石油勘探开发研究院,北京 海淀 100083;2. 中国石油勘探开发研究院,北京 海淀 100083 3.“提高油气采收率”教育部重点实验室 ? 东北石油大学,黑龙江 大庆 163318;4. 中国石油大庆榆树林油田有限责任公司,黑龙江 肇东 151100
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-04-20 发布日期:2011-04-20

STUDY ON WELL PATTERN ADJUSTMENT METHOD OF FRACTURED LOW-PERMEA-BILITY OIL RESERVOIR

GAO Ming 1,2 SONG Kao-ping 3 ZHANG Ying-zhi 4 YANG Er-long 3 WANG Wei-guo 4   

  1. (1. State Key laboratory of Enhanced Oil Recovery, Research Institute of Petroleum Exploration and Development, CNPC, Haidian,Beijing 100083,China; 2. MOE Key Laboratory on Enhanced Oil and Gas Recovery, Northeast Petroleum University, Daqing, Heilongjiang 163318, China 3. The Research Institute of Petroleum Exploration and Development, CNPC, Haidian,Beijing 100083, China 4. Yushulin Oilfield Co. Ltd., Daqing Oilfield Company, CNPC,Zhaodong,Heilongjiang 151100, China)Journal of Southwest Petroleum University, Vol. 33, No. 2, 109 – 114,2011(1674 – 5086,in Chinese)
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-04-20 Published:2011-04-20

摘要: 依据大庆榆树林油田东 16 区块扶杨油层裂缝发育特征和注水开发动态特点,结合目前区块剩余油分布,分析裂缝对剩余油分布和开发效果的影响,为进行注采系统调整提供依据。针对东 160 和升 371 两个断块特点,各设计了4 套加密方案,并进行开发指标预测方案优选。结果表明:东 160 断块裂缝方向与井排方向一致,油水井排之间不能形成有效驱替,应缩小井距,优选出的方案四,加密后东 160 断块形成大井距小排距的线状注水;升 371 断块裂缝方向与井排方向呈 12.5° 相交,油水井排之间能形成有效驱替,优选出的方案四,采用三角形重心加密,改变流场方向,更加有利于开采剩余油富集区。

关键词: 低渗透油层, 裂缝储集层, 数值模拟, 剩余油分布规律, 井网调整

Abstract: Based on the fracture development characteristics and water flooding development performance of Fuyang Formation in Dong16 Block of Daqing Yushulin Oilfield and combined with the saturation distribution of remainin
oil in present Block, the effect of fracture on remaining oil distribution and the development effect is analyzed, which provides evidence for the injection-production system adjustment. According to the characteristics of Fault Block
Dong160 and Fault Block Sheng371, 4 sets of infill programs are designed and the development prediction index is optimized. The results show that fracture is in the same direction with well line in Fault Block Dong160 and effective
displacement can not be established between oil and water well lines, so the well spaces should be shorten. After infilling wide spacing and small row spacing the linear water injection is formed. In Fault Block Sheng371 fracture
direction is at the angel of 12.5? to well line direction and effective displacement can be established between oil and water well lines. The optimized Program 4 in which the triangular gravity infilling is selected to change flow field direction is more beneficial to exploit remaining oil enriched areas.

Key words: low permeability reservoir, fractured reservoir, numerical simulation, distribution of residual oil, wellpattern adjustment

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