EXPANDABLE SECTION MILL AND METHOD

摘要

An expandable section mill includes a body, a piston movably disposed within an inner cavity of the body, the piston including a wedge surface, a jaw member pivotally connected to a lower end of the body, and a blade assembly affixed to a tapered surface of the jaw member. The jaw member includes an internal channel system for fluid flow through the jaw member to one or more outlets on the jaw member. The jaw member includes a pivot surface. The wedge surface of the piston engages the pivot surface of the jaw member to pivot the jaw member between a retracted position and an extended position. In the retracted position, the blade assembly is positioned radially inward relative to an outer surface of the body. In the extended position, the blade assembly extends radially outward relative to the outer surface of the body.

主权项

1. An expandable section mill comprising:
a body having an outer surface and an inner cavity; a piston disposed within the inner cavity of the body, a lower section of the piston including a wedge surface; a jaw member pivotally connected to a lower end of the body, the jaw member including a tapered surface, an internal channel system for fluid flow through the jaw member, and a pivot surface at an upper end of the jaw member, wherein the pivot surface is configured to engage the wedge surface of the piston; a blade assembly affixed to the tapered surface of the jaw member, wherein the tapered surface includes a wear surface below the blade assembly.