Whipstock assembly for forming a window within a wellbore casing

A method for creating a whipstock assembly, comprising:

• providing a first member having an elongated body with a back surface and an opposite surface;
• providing a second member having an elongated body with a ramped concave surface and a side wall on each side of the ramped concave surface, wherein the side walls and the ramped concave surface form a pocket on an interior side of the second member;
• placing the first member adjacent the side walls of the second member to form an elongated tubular body having a ramped cutting tool guide and a pressure holding cavity therein, the cavity being defined by the opposite surface of the first member and the pocket;
• and
• securing the first member and the second member together, thereby forming a pressure vessel in the cavity.

A method for creating a whipstock assembly, comprising:

• providing a first member having a first elongated body with an outer surface and an opposite ramp surface;
• providing a second member having a second elongated body with a ramped concave surface having a perforation plate, and an opposite cavity surface;
• inserting the second member into the first member to locate the ramped concave surface proximate the opposite ramp surface thereby forming a cutting tool guide portion;
• and
• securing the first elongated body and the second elongated body together thereby forming a fluidly sealed pressure vessel between the first member and the second member.