MODEL CU
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.
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MODEL CI
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.
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MODEL CUP
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.
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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.
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MODEL CUB
They are the same as model CU wellheads, except they have a flanged bottom connection and secondary seal.
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MODEL CUBP
They are heads intended to hang tubing. They have a flanged bottom connection and a gland to pack the tubing.
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MODEL CUS
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.
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MODEL CUBE
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.
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