套管开窗侧钻主要分为定斜器开窗侧钻和截断式开窗侧钻,但由于截断式开窗侧钻花费较大,然而用定斜器开窗侧钻花费少,钻井周期短,可大大提高经济效益。本文结合叙利亚T区块T-077ST1井φ177.8mm套管开窗侧钻的施工过程,较为系统的阐述了使用定斜器套管开窗的前期准备和施工工艺,尤其对磨铣过程中的技术要求和注意事项作了解释,此项技术尤其针对浅井,同时油层储位较低的井来说应用性更为广泛,而且成本较低。 Casing fenestration is mainly divided into fixed-side window-cutters and cut-off side-drilled side-drills, but due to the large expenditure of truncated side-drilled side-drills, Short, can greatly improve economic efficiency. In this paper, the construction process of the φ177.8mm casing window sidetracking in the T-077ST1 well in T-077ST1 in Syria is systematically described. The pre-preparation and construction process of the window-opening using the fixed-angle casing is systematically described, especially for the milling process Technical requirements and precautions are explained, this technology is especially for shallow wells, reservoirs with lower reservoir potential more widely used, and the cost is lower.