whipstock

Developing small size whipstock so as to reduce the hole enlarging cost.Carrying on reliability desi...

减小转向器对钢质柔性钻杆的阻力,以增大径向水平进尺;

Based on the models,the clearance between the walls of slide way in whipstock,the clearance between wheels against each ...

对钻杆材料、规、参数的选择出了具体方。