低渗透油藏裂缝对注水开发效果的影响  

Effect of Fractures on Water Injection in Low Permeability Reservoir

作　　者：朱秀兰[1] 袁义东[1] 

机构地区：[1]陇东学院能源工程学院,甘肃庆阳745000

出　　处：《陇东学院学报》2017年第3期82-84,共3页Journal of Longdong University

摘　　要：通过岩心观察法、微地震法和化学示踪剂检测方法对低渗透长2油藏裂缝分布特征进行研究,分析裂缝对注水开发效果影响。结果表明,人工压裂裂缝与发育较好的天然裂缝方向一致,裂缝方位以北东与北西方向为主;注水开发时,沿裂缝方向注入压力升高,易形成水淹井,建议合理优化注采井网,如:转注部分低产井、钻加密井,提高油田水驱采收率。Characteristics of fracture distribution in low permeability chang 2 reservoir are studied by core observation method, microseismic method and chemical tracer detection method, the influence of fractures on water injection was analyzed. The results indicate that artificial fractures and more developed natural fractures are in the same direction, fracture azimuth is north-east and north-west direction. During the wa- ter flooding injection pressure increases along the fracture direction and oil wells turn into water flooded wells. Optimize injection-production pattern was suggested, such as, transferring part of the stripper wells, drilling infill wells, and water flooding recovery improved in the oilfield.

关 键 词：低渗透油藏 裂缝 注水 注采井网 

分 类 号：TE348[石油与天然气工程—油气田开发工程]