Casing head ＆ casing head spool

Used to fix the wellhead, suspend the downhole tubing, seal and control the annular space between tubings. Structural form: split type or integral type.

◆ The upper and lower connections are both API6A flange connections, with locking screws on the flanges;

◆ The matching hanger structure types include slip type and mandrel (thread) type;

◆ Side outlet connection methods: threaded type, threaded-flange type;

◆ The bottom is designed with a secondary sealing structure, and the secondary sealing forms include O-ring seal, grease injection BT seal and metal-to-metal seal;

◆ Grease injection valve, test port;

◆ The lower connection method of the casing head: threaded, plug-welded or slip type.