The cambered whipstock is a normal type. The whipface is a circular arc surface, and has been super hardened. The whipface and the casing window milling cone have a high degree of agreement, and the righting effect is good. The opened window is regular, smooth and accurate; During the drilling process, the weight on bit is easy to control, which reduces get stuck and bit bounce, and reduces the occurrence of downhole accidents.

Downhole motor (or drilling motor , mud motor) is a kind of downhole dynamic drilling tool upon the power of drilling mud (or compressed gases) ,which is a kind of positive displacement motor (PDM).

The air downhole motor (or air drilling motor , air motor) is a downhole positive displacement motor (PDM) that uses compressed gas as the medium. It can be widely used in construction operations such as oilfields, coal, geophysical exploration, and directional exploration. It is a necessary tool for underbalanced drilling and coal mines in some geological situations where mud can not be used, so it has been popularized and applied.

A one trip whipstock assembly which can be run into a well, set, and operated from a window in the well casing in a single trip includes a milling tool attached to the upper end of a whipstock to the lower end of which is attached a packer or anchor which can be set by appropriate means prior to detachment of the mill from the whipstock to initiate window formation.