中外能源　SINO-GLOBAL ENERGY

 

 
     
 
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低渗断块油藏周期性注水设计原则

张 勇，苏国军
(中国石化华东分公司采油厂，江苏 泰州 225300)
摘　要 周期注水是通过周期性地改变注入水量来改善低渗油藏和裂缝孔隙性油藏水驱开发效果的一项技术。金南3号油田是苏北盆地金湖凹陷2001年投入注水开发的低渗断块油田，因油水井水力压裂改造造成油田注采井距适应性变差，部分油水井出现水窜现象，导致油田开发效果差。2003～2005年选择试验区进行周期注水试验，有效地改善了油田开发效果。文章从周期注水驱油机理入手，结合金南3号油田周期性注水试验区试验成果，论述了低渗断块油藏周期性注水的设计原则。
关键词 周期注水 低渗断块 注水驱油机理 注水试验 设计原则
 



Design Principle of Cyclic Waterflooding
for Low-Permeability Fault Block Reservoir

Zhang Yong，Su Guojun
(Oil Production Plant of Huadong Company，SINOPEC，Taizhou Jiangsu 225300)
[Abstract] Cyclic waterflooding is a kind of waterflood technique，which can improve the waterflood efficiency in low-permeability and fracture-porosity reservoir by changing periodically injected water volume.Jinnan No.3 oilfield in Jinhu depression of Subei basin is a low-permeability and fault block oilfield，in which waterflood was commenced in 2001.Water breakthrough occurred in some wells was due to the lower adaptability of well spacing caused by fracturing，and resulted in a poor effect of oilfield development.Cyclic waterflooding was applied in pilot wells from 2003 to 2005，which improved the oilfield development effect.Based on the mechanism of cyclic waterflooding and the result of field application，this paper discusses the design principle of cyclic waterflooding for low-permeability fault block reservoir.
[Keywords] cyclic waterflooding；low-permeability and fault block；injection mechanism；injection test；design principle



作者简介：张勇，工程师，1991年毕业于西安地质学院，现就职于中国石化华东分公司采油厂，主要从事油田开发工作。