油田浅层大位移水平井的应用研究

Application of shallow large displacement horizontal wells in oilfield

针对油田某井,经过分析及论证将剖面类型选近似单圆弧剖面(直-增-水平),这种剖面轨迹简单,减少了大井斜稳斜进尺,增加了连续定向增斜进尺,能保证井眼轨迹的平滑,同时减少了局部的增斜和稳斜,减少钻柱与井壁的接触面积,能有效降低全井摩阻和扭矩。

The profile type was selected by analysis and demonstration as single arc profile(straight-building anglehorizontal)in terms of certain oil well.the simple trajectory of the profile reduces the steady inclined footage of large well deviation,and increases inclined footage of the continuous directional building angle,which ensures the smooth well trajectory,reduces the local building and hold angle as well as the contact area between drill string and borehole,so as to effectively reduce the friction and torque of the whole well.