PORT COLLAR ASSEMBLY FOR USE IN A WELLBORE

摘要

The present invention generally provides a port collar assembly (200) comprising a housing (205) and a sleeve (206) disposed therein. The sleeve is moveable between a first or opened and a second or closed position relative to the housing. In the closed position, the port collar prevents communication of the fluid between the exterior and interior of the port collar. In the open position, the port collar permits communication of the fluid between the exterior and interior of the port collar. The assembly includes a locking mechanism (300, 301) for the opened and closed positions comprising ratchet teeth (375) formed on the exterior surface of the sleeve and mating ratchet teeth (375) formed on the interior surface of the housing. The mating ratchet teeth are designed to secure the sleeve in a first position within the housing. A second set of mating ratchet teeth secures the sleeve in a second position.