KD series of open-window tools system consists of Whipstock, open-window mill prick, drill string mill and so on. It’s the specific tools for open-window for lateral drilling well and lateral drilling horizontal well, which can complete casing open-window, window-repair operation and window smoothing efficiently. KD series of open-window tools system mainly includes whipstock assembly and casing assembly mill prick.whipstock assembly consists of sending tools, whipstock, anchor hanger and pin.casing assembly mill prick consists of casing open-window milling shoes and drill string mill. KD series of open-window tools system mainly includes whipstock assembly and casing assembly mill prick.whipstock assembly consists of sending tools, whipstock, anchor hanger and pin. casing assembly mill prick consists of casing open-window milling shoes and drill string mill. Technical characteristics 1.There are totally 6 axial and circumferential slips to ensure whipstock not move axially and circumferentially. 2.The piston is designed as cone and increase pressure by waterpower in order to push the slips into extending and embedding into the casing. 3.With safe and convenient back-off reamer. 4.Casing assembly mill prick can accomplish opening, repairing and adjusting windows. Technical parameters Tool modelConnecting threadOD of bodymmLength of toolmmOD of suitable casing mmworking pressure of seal seatMPaKD-340NC503004700339.720-25KD-245NC502164600244.4720-25KD-178NC381524500177.820-25KD-140NC311153750139.720-25