They are heads intended to hang tubing. They have a cylindrical housing for the hanger. The bottom connection is threaded. They have threaded 2”LP side outlets and a closing cap tightened with hammer union to seal the annulus space. The upper thread is 8 5/8" CSG.
They are heads intended to hang casing. They have a cylindrical housing for the hanger. The bottom connection can be either threaded or ready for welding. They have threaded 2”LP side outlets and a closing cap tightened with hammer unions to seal the annulus space . The upper thread is 13-3/8" csg.
They use the same body and cap as the CI model heads, except they have an adapter to house the slips, seal, and gland flange.
INDEPENDENT WELLHEAD ADAPTERS
Independent wellhead adapters are used to adapt a model CU casing spool over the lower head of a model CI lower casing. It can be used as contingency equipment in case of damage to the casing spool thread. It is also ideal for adapting a flanged tubing spool to a lower independent casing head, as it provides a secondary seal in the casing spool.
They are the same as model CU wellheads, except they have a flanged bottom connection and secondary seal.
They are heads intended to hang tubing. They have a flanged bottom connection and a gland to pack the tubing.
They are heads intended to hang tubing similar to model CU heads, except they add an adapter that allows a stripper to be housed. The stripper provides an annulus seal that allows safe handling of the tubing.
Model CUBES independent wellheads are similar to model CU wellheads, except they have a hanger that allows hanging the string of tubing, and a preparation to install an electrical connector for the power cables of the electrical submersible pump.