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图中模型含义如下:圆柱体OO1表示顶角为θ1(原钻孔轴心线OO1与铅垂线OA’之间的夹角)、方位角为α1(原钻孔轴心线OO1在水平面的投影A′O′与磁北方向A′N之间的夹角)的老钻孔;Rt△OO1C表示楔顶角为γ且相对于原钻孔弯曲平面(原钻孔轴心线OO1与铅垂线OA’确定的平面)扭转Ф角(即所
The model has the following meanings: The cylinder OO1 indicates the apex angle θ1 (the angle between the original borehole axis OO1 and the vertical line OA ’) and the azimuth angle α1 (the original borehole axis OO1 is in the horizontal plane The angle between the projection A’O ’and the magnetic north direction A’N); Rt △ OO1C indicates that the wedge angle is γ and relative to the original drilling hole bending plane (the original bore hole axis OO1 and the vertical Line OA ’to determine the plane) to reverse the Ф angle (ie