Abstract: A wellhead assembly includes a casing head and a tubing head that is landed within the casing head when the tubing head is landed. The casing head has top and bottom ends, and its bottom end is coupled to surface casing. The tubing head also has top and bottom ends, and its bottom end is coupled to an additional casing string, such as production casing. The tubing head can be landed on the casing head through a blowout preventer.

Abstract: The present disclosure is directed at a wellhead assembly that includes a casing head and a tubing head that is landed within the casing head when the tubing head is landed. The casing head has top and bottom ends, and its bottom end is coupled to surface casing. The tubing head also has top and bottom ends, and its bottom end is coupled to an additional casing string, such as production casing. The present disclosure also is directed at the tubing head itself, and at a method for landing the tubing head within the casing head. Beneficially, the present disclosure describes a method and apparatus by which the tubing head can be landed on the casing head through a blowout preventer, which can save time and reduce risk relative to conventional methods and apparatuses by which the blowout preventer is nippled-down prior to landing the tubing head.