초록 ▼

A buoyancy system for a deep water floating platform includes at least one buoyancy module coupled to the a riser. The module may be coupled to a ring structure of an end cap coupled to the riser, or two modules may be coupled to a ring structure to couple them together. The modules have an interior

A buoyancy system for a deep water floating platform includes at least one buoyancy module coupled to the a riser. The module may be coupled to a ring structure of an end cap coupled to the riser, or two modules may be coupled to a ring structure to couple them together. The modules have an interior flange extending into the interior cavity and abutting the ring structure. Fasteners couple the interior flange of the module to the ring structure to form an interior attachment. A seal may be formed between the flange of the buoyancy module and the ring structure, and may include a seal member disposed in a groove. A test port extends to the groove to allow testing of the seal. The module may include a material and may have a thickness that together allow a wall of the buoyancy module to expand outwardly under an internal pressure and force the flange against the ring structure to enhance sealing between the flange and ring structure.

대표청구항 ▼

1. A buoyancy system for a riser that is a part of a deep water floating platform, comprising:a) a stem pipe configured to receive the riser therethrough; b) a pipe flange, attached to the stem pipe; c) an end cap including an end cap flange attached to the pipe flange of the stem pipe; d) a ring st

1. A buoyancy system for a riser that is a part of a deep water floating platform, comprising:a) a stem pipe configured to receive the riser therethrough; b) a pipe flange, attached to the stem pipe; c) an end cap including an end cap flange attached to the pipe flange of the stem pipe; d) a ring structure, attached to the end cap; e) a buoyancy module having an interior cavity through which the stem pipe extends, and a flange located at an upper end of the buoyancy module that extends into the interior cavity and abuts to the ring structure; and f) fastening means, engaging the ring structure and the flange, for fastening the flange to the ring structure.