井斜角是指油水井中某点的中轴线与地球铅垂线之间的夹角，其范围为0°~180°.，井斜角用来指示井眼轨迹的斜度。
大位移井具有长水平位移、大井斜角以及长裸眼段的特点。
The extended reach well has such characteristics as large horizontal displacement, great deviation Angle and long open hole interval.
对定向井井筒压力分布，计算时根据井斜角的变化采取分段计算的方法。
According to the changes of deviation Angle calculated the pressure distribution of directional well.
研究结果表明，当垂向应力为中间应力时，斜井的稳定性随井斜角的增大而增大。
The results indicate the stability of deviated wells increases with deviation increment when the vertical stress is intermediate stress.
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