Patent ID: 6695057
Filing Date: 2004-02-24
Classification: E21B

Abstract:
A fracturing port collar for use with a pack-off system within a wellbore, the fracturing port collar being disposed between an upper packing element and a lower packing element of the pack-off system, the fracturing port collar comprising:a tubular inner mandrel having an inner surface and an outer surface, and defining a bore within the inner surface, the bore being placed in fluid communication with the outer surface of the mandrel by at least one packer actuation port; at least one frac port for placing the inner surface and the outer surface of the mandrel in fluid communication with one another; a tubular case disposed along a portion of the tubular inner mandrel, the tubular case being slidably movable relative to the mandrel between a first position and a second position, wherein the tubular case substantially seals the at least one frac port in its first position, and exposes the at least one frac port in its second position.