气举反循环钻进深度的理论计算与加深试验

Depth Theory Calculation and Deepen Testing of Air Reverse Circulation Drilling

运用气举反循环钻进，在满足一定条件下适当增加双壁钻具长度即可得到较大钻进孔深。本文通过理论计算及实验，证实了使用现有设备，气举反循环可以更好的满足超千米深水井的施工要求。

Apply air reverse circulation drilling, appropriate increase length of twofold wall drill tools under certain conditions, may be drilling much deeper. Get through theory calculation and testing, it has proved that air reverse circulation can be satisfied constructional claims of over thousand meters deep water well, with existing equipments.