This kind of continuous whipstock, also known as wedgeless continuous whipstock, is a relatively new whipstock tool. It uses a special mechanism to generate deflection force to achieve directional deflection. The deflecting cycle starts from drilling down to the point where the drill bit needs to be replaced due to wear or due to some abnormal conditions, the drill is required to be lifted for inspection. The whipstock is built with the same diameter, and a hole is formed at one time.

When the drilling tool goes down to the bottom of the hole and applies the axial pressure P, the drilling tool is in the working state. The driving shaft overcomes the elastic force of the working spring and the return spring, moves downward, and the spline shaft engages with the spline sleeve. At this time, the upper half wedge and the casing are under the pressure of the working spring, and the lower half wedge moves, and the slider is pushed out. The roller presses against the hole wall, which produces a relatively large lateral pressure Q on the hole wall. At the same time, the upper and lower half wedges together with the drill bit are displaced in the opposite direction of the sliding block, and a deflection force A is also generated on the drill bit. The side pressure keeps the housing fixed to the hole wall and cannot rotate in the circumferential direction. However, the housing can move in the axial direction as the rollers roll down under the action of axial pressure.