长垣、齐家地区致密油水平井钻井提速配套技术

针对大庆长垣、齐家地区致密油水平井水平段长、三维井机械钻速慢、钻井周期长、井壁失稳等问题,通过井眼轨道设计优化,降低了三维井施工难度;通过高效螺杆优选,提高了钻井施工效率;通过研制应用提速钻井工具,提高了造斜段和水平段机械钻速;通过研制高性能水基钻井液体系,实现了长水平段防塌。现场应用14口井,取得了显著的提速效果,平均机械钻速10.53 m/h,相比应用之前机械钻速提高了25.68%。

Matching technology for increasing ROP in tight oil horizontal well in Placanticline and Qijia of the Daqing oilfield

To address problems such as long horizontal section,low ROP,high drilling construction difficulty,long drilling cycle,hole instability in tight oil horizontal well in Placanticline and Qijia areas of Daqing oilfield,with well trajectory optimization,the drilling construction difficulty was declined.Through optimized high efficient screw,the drilling construction efficiency was improved.With the development and application for increased ROP drilling tools,the ROP was increased highly in deflecting section and horizontal section.With the development of high performance water-based drilling fluid system,the antisloughing in long horizonal section was achieved.The ROP increased highly by 14 wells field experiment.The ROP was 10.53 m/h,which increased 25.68% by contrast before the experiment.Form the matching technology for increasing ROP in tight oil horizontal well in Placanticline and Qijia areas of Daqing oilfield.