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套管开窗侧钻即用专用工具将老井眼套管磨铣出一个与地层连通的窗口而后进行侧钻。套管开窗侧钻工艺技术主要应用在分支井、事故井处理和老井二次开发等。渤海地区应用的套管开窗工具主要有SZ系列开窗侧钻工具(胜利石油管理局)、Trackmaster Plus Wellbore Departure Systems(SMITH)、One TripTM StarburstTM Whipstock System(Weatherford)。
Casing fenestration The side-drills use a special tool to mill an old wellbore casing into a window that is connected to the formation and then sidetracked. Casing fenestration sidetrack technology is mainly used in branch wells, accident well processing and secondary development of old wells. The casing windowing tools used in the Bohai area are mainly the SZ series side window drilling tools (Shengli Petroleum Administration Bureau), Trackmaster Plus Wellbore Departure Systems (SMITH), One TripTM StarburstTM Whipstock System (Weatherford).