朝阳沟油田构造裂缝及其有效性研究Structural fractures and their effectiveness of Chaoyanggou Oilfield
孙贻铃,王秀娟
SUN Yi-ling; WANG Xiu-juan(Exploration and Development Research Institute of Daqing Oilfield Company Ltd.;
摘要(Abstract)：
在岩心和露头裂缝发育特征观察和统计工作基础上, 结合油田开发动态, 应用岩心古地磁定向等室内实验方法, 利用水力压裂等现场资料对朝阳沟油田扶杨油层古今地应力场及裂缝发育特征进行了系统的研究。结果认为, 扶杨油层发育以东西向为主的多向性构造裂缝, 油田开发初期近东西向显裂缝导流能力最强, 为最有效裂缝组系。随油田压力场变化, 裂缝有效性也随之改变, 出现多方向见水及水淹现象。低渗透油田开发注水压力界限是控制不同方向裂缝组系的张开度。
Based on the observation on the core and crop fracture development characteristic and the statistics and combining with the oilfield development performance,this paper studies the earth stress field and fracture development charateristis of Fuyang reservoir in Chaoyanggou Oilfield using hydraulic fracturing data. The result shows that,Fuyang reservoir develops EW multi-directional structural fractures. The nearly EW fractures in the initial period of the oil field development has the strongest conductive capability,being the most effective fractures group.With the pressure field change in the oilfield,the effectiveness of fractures also change,appearing multi-directional water breakthrough and water swept.The limit of water injection for low permeable oilfields is to control the open degree of the fracture groups in different directions.
关键词(KeyWords)：
构造裂缝;地应力;有效性;朝阳沟油田
structural fracture;earth stress;effectiveness;Chaoyanggou Oilfield
基金项目(Foundation):
作者(Authors):
孙贻铃,王秀娟
SUN Yi-ling; WANG Xiu-juan(Exploration and Development Research Institute of Daqing Oilfield Company Ltd.;