Horizontal drilling with average 3 200 m of well depths was contracted in Duhan oil field of Qatar.
在卡塔尔杜汉油田承钻的 32 0 0m左右的水平井 ,垂深只有 16 6 0～ 2 10 0m ,而水平位移则长达10 5 0～ 2 0 0 0m ,最大井斜为 97。
