侧钻水平井轨迹的地质设计方法及有关计算问题

Geology designing and relevant calculation for the trajectory of sidetracking horizontal well

方法 利用平面解析几何的方法研究不同井况条件下，用二维平面图完成三维设计的问题。目的用准确的设计，为现场实施调整轨迹提供依据。结果在无 ＭＷＤ等随钻测井仪器的条件下，可保证在油层厚度仅为 ５～８ ｍ时准确入靶，并使油层钻遇率达到设计要求。结论为侧钻水平井设计、实施提供了一种简明、准确的手段。

Method Plane analytical geometry is utilized to carry out 3D design with ZD plane map under various well conditions. Purpose To provide basis for adjusting well trajectory on site with accurate design and, adjust entry point and horizontal section according to the actual variation of sandbody and oil-bearing formation. Result Design requirements for entering oil-bearing formation (5-8m in thickness ) can be achieved through elaborate construction and analysis without MWD and the like. Conclusion Method presented is simple and accurate in geology designing and implementing side tracking horizontal wells.