Abstract: A milling system has been invented for milling an opening in a tubular in a tubular string in a wellbore extending down from a surface of the earth, the milling system, in one aspect, has a whipstock connected to an anchor assembly and a mill apparatus releasably connected to the whipstock, the mill apparatus having auto fill apparatus therein. A mill has been invented with a mill body with a top end and a bottom end, a flow bore through the mill body, and an auto fill apparatus in the flow bore. A valve assembly has been invented for selectively controlling fluid flow through a hollow tubular in a string of hollow tubulars in a wellbore extending from a surface of the earth into the earth, the valve assembly in one aspect having positions limited to at rest, circulate, and anchor set positions so that a fluid pressure indicating at the surface indicates only either a pressured up position for anchor setting or a pressured up position for fluid circulation.

Abstract: A milling system has been invented for milling an opening in a tubular in a tubular string in a wellbore extending down from a surface of the earth, the milling system, in one aspect, has a whipstock connected to an anchor assembly and a mill apparatus releasably connected to the whipstock, the mill apparatus having auto fill apparatus therein. A mill has been invented with a mill body with a top end and a bottom end, a flow bore through the mill body, and an auto fill apparatus in the flow bore. A valve assembly has been invented for selectively controlling fluid flow through a hollow tubular in a string of hollow tubulars in a wellbore extending from a surface of the earth into the earth, the valve assembly in one aspect having positions limited to at rest, circulate, and anchor set positions so that a fluid pressure indicating at the surface indicates only either a pressured up position for anchor setting or a pressured up position for fluid circulation.

Abstract: The present invention, in one aspect, discloses a system for selectively anchoring a wellbore tool at a desired location in a wellbore or tubular member such as casing or tubing; such a system with a selectively settable anchor assembly that has a piston that is moved upwardly by fluid under pressure from the surface thereby moving one or more movable slips out from a body of the anchor assembly to set the anchor assembly in place; and such a system with a whipstock connected to the anchor assembly. Fluid under pressure pumped from the surface down a workstring to which the system is connected flows to the anchor assembly through or adjacent the whipstock. In one aspect a mill (or mills) is releasably connected to the whipstock. In one aspect, fluid under pressure flows through or adjacent the mill(s) to the whipstock.