摘要
段内缝网压裂施工过程中投送暂堵剂,在高渗透带形成滤饼桥堵,促使新缝的产生和增加单缝的复杂程度,最终在水平段内形成缝网,提高储层的动用程度。页岩储层岩性致密,具有非均质性强的特点,在井筒变形、完井工具入井困难的情况下,常规的分段压裂改造技术无法实施,应用段内暂堵转向缝网压裂技术可以实现复杂井段储层的改造,提高储层的动用程度。
During network fracturing operations,the plugging agent is spotted to form filter-cake bridge plugs at high-permeability zones to help new cracks produced and single cracks get more complex,thus a fracture network can be formed withinthe horizontal interval to improve the utilization of the reservoir.Shale gas reservoir is tight and highly heterogeneous,conventional stage fracturing technique can not be implemented due to wellbore deformation and very difficult running-in of completion tools. Application of temporary plugging and diverting fracturing technology in the horizontal section can realize stimulation at the problem section,improving the utilization degree of the reservoir.
出处
《钻采工艺》
CAS
北大核心
2017年第2期38-40,共3页
Drilling & Production Technology
关键词
页岩
水平井
缝网
暂堵剂
压裂
shale
horizontal well
fracture network
temporary plugging agent
fracture
