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连续油管过油管开窗侧钻技术包括水泥塞开窗侧钻技术、水泥环内置造斜器开窗侧钻技术和过油管造斜器开窗侧钻技术。三种技术的主要差别在于开窗和出老井眼的导向方式上。水泥塞开窗侧钻通过在水泥塞上钻先导井眼实现；水泥环内置造斜器开窗侧钻通过造斜器导向，造斜器固定在水泥塞内；过油管造斜器开窗侧钻也是通过造斜器导向，但造斜器通过锚定器固定在套管上。目前，水泥塞开窗侧钻技术比较成熟，应用广泛，是三种技术中最可靠、经济的一种。通过引进部分关键部件，我国完全有能力研制连续油管钻井系统。建议组织联合研究，早日开展先导试验。
Coiled tubing through the pipe window sidetracking techniques include cement plug window sidetracking technology, cementing ring built-in whipstocking sidetracking and cross-pipe overturning window sidetracking technology. The main difference between the three technologies lies in the way the windows are opened and the old wellbores are oriented. The cement plug fenestration sidetrack is realized by drilling the pilot wellbore on the cement plug; the cement ring is built with a whipstocking fenestration and the sidetrack drill is guided by the whipstock so that the whipstock is fixed in the cement plug; The drill is also guided by the whipstock, but the whipstock is anchored to the casing by the anchor. At present, cement plug window sidetracking technology is relatively mature, widely used, is the most reliable of the three technologies, a kind of economy. Through the introduction of some key components, China is fully capable of developing a coiled tubing drilling system. Proposed to organize joint research, early pilot test.