Whipstock with hydraulic-mechanical retrievable anchor set without bottomhole support KOYAGMI

The whipstock with a retrievable hydraulic-mechanical retrievable anchor is designed for casing exit through one or multiple casings. The whipstock system - comprising a starting mill (SM) and a watermelon mill (WM) - enables whipstock setting, casing exit and rathole drilling in a single trip. The whipstock is hydromechanically set without cement bridge or packer plug. The anchor can be retrieved from the wellbore if necessary.