Patent ID: 7779921

Claim:
A wellhead completion assembly, comprising: a casing head connecting to casing at a wellhead and having a first external threaded connection adjacent a first end; a casing hanger landing in the casing head and having a shoulder and a second end, the second end extending beyond the first end of the casing head and having a second external threaded connection, the second external threaded connection connectable to a connector to support at least one additional component above the casing hanger; a pack-off plate disposed on the second end of the casing hanger adjacent the shoulder, the pack-off plate having an upper surface, an inner portion, and an outer portion, the inner portion sealable engaging an external surface of the casing hanger, the outer portion sealable engaging an internal surface of the casing head; and a head ring threadably connecting to the first external threaded connection of the casing head and defining an opening through which the second end of the casing hanger extends, a portion of the head ring directly engaging the upper surface of the pack-off plate.