海14-20分支井套管开窗技术

WINDOW MILLING TECHNOLOGY IN MULTILATERAL WELL-WELL HAI14-20

介绍了国内第１口自行设计工具，自行施工的三翼分支井──海１４－２０分支井的套管开窗技术，从工程设计、套管开窗工艺、斜向器方位摆放、窗口保护等方面阐述了分支井开窗技术难点和重点，探讨了分支并可回收式斜向器的回收及方位摆放技术问题，为今后实施分支井钻井提供了经验。

Well Hai14-20 is a multilateral well with three branches, and it is the first trial to conduct the window milling using our self-designed tools and by our own experience.Some of the important issues for window milling in a multilateral well are described, such as its planing, the window milling technique, setting of the whipstock,window protecting, etc. It focuses on an important tool used in the multilateral well, the retrievable whipstock, and its recovery, its setting and arrangement technologies are further discussed.