In level hole drilling,by the using of numerical valule analysis method,the mathematics model of drill hole depth and dip angle relation under someone stratum is set up.

• 在水平孔钻进中,利用数值分析方法,建立在某种地层下按某种钻具组合和钻进参数钻进时,孔深和倾角关系的数学模型。