Hybrid two piece packoff assembly

A packoff assembly for use in a wellhead assembly, the wellhead assembly comprising a first outer tubular member, a second outer tubular member which is mounted on the first outer tubular member, and an inner tubular member which is landed in the first outer tubular member, the packoff assembly including:

• a lower packoff which is configured to seal between the inner tubular member and the first outer tubular member;
• an upper packoff which is configured to seal between the inner tubular member and the second outer tubular member, the upper packoff being releasably connected to the lower packoff and, when connected to the lower packoff, being axially movable relative to the lower packoff between a first position and a second position;
• a latch ring which is supported on the lower packoff, the latch ring being radially expandable into a corresponding locking groove in the first outer tubular member;
• and
• a locking mandrel which is operably engaged by the upper packoff such that upon axial movement of the upper packoff from the first position to the second position, the locking mandrel expands the latch ring into the locking groove to thereby lock the upper and lower packoffs to the first outer tubular member;
• wherein with the lower packoff locked in position between the inner tubular member and the first outer tubular member and with the second outer tubular member removed from the first outer tubular member, the upper packoff can be removed from the packoff assembly by disconnecting the locking mandrel from the upper packoff and disconnecting the upper packoff from the lower packoff.