Stem head adapter with pistons

摘要

A casing head assembly for landing on a stem head of a floating structure can include a stem head adapter assembly that includes a ring shaped stem head adapter plate. A solid upper ring is spaced axially above the stem head adapter plate, defining an adapter gap between the upper ring and the stem head adapter plate. At least one load cell can have a first end that is supported by the stem head adapter plate and a second end that engages the upper ring. At least one piston assembly is selectively secured to the upper ring. The casing head assembly also includes a casing head landed on, and secured to, the upper ring of the stem head adapter assembly. The load cell is selectively constrained between the upper ring and the stem head adapter plate by a load on the casing head.

主权项

1. A casing head assembly for landing on a stem head of a floating structure, the casing head assembly comprising:
a stem head adapter assembly comprising:
a stem head adapter plate, the stem head adapter plate being ring shaped;an upper ring spaced axially above the stem head adapter plate defining an adapter gap between the upper ring and the stem head adapter plate, the upper ring being a solid ring shaped member;at least one load cell with a first end that is supported by the stem head adapter plate and a second end that engages the upper ring; andat least one piston assembly selectively secured to the upper ring, wherein the at least one piston assembly includes a removable piston housing having a piston cavity and a piston disk located within the piston cavity;
a casing head landed on, and secured to, the upper ring of the stem head adapter assembly; and wherein the at least one load cell is selectively constrained between the upper ring and the stem head adapter plate by a load of the casing head.