考虑方位漂移的定向井轨迹设计方法

A DIRECTIONAL WELL TRAJECTORY DESIGN METHOD

在实际钻井过程中 ,方位漂移不可避免 ,它不仅影响到能否中靶的问题 ,而且关系到钻井作业的成败。在定向井轨迹设计中 ,考虑方位漂移规律是进行轨迹控制的一种行之有效的方法。分别研究了方位均匀漂移、同向漂移和异向漂移的定向井轨迹设计。给出了具体的计算公式和算例 ,并结合现场实例分析了本方法的可靠性 。

Azimuth drifting is inevitable in field drilling, and it's a major factor influencing the effective and successful drilling. In directional well trajectory design, applying the regular pattern of azimuth drifting is an important and effective way of trajectory control. This paper studies the trajectory design in rectangular drifting, concurrent drifting and incongruous drifting situations. Specific calculating models and examples are given and its reliability is evaluated using case history. This method is beneficial for field drilling.