Trelleborg's jacket leg can systems are designed to encompass the stabilizing needs of an oil and gas platform's substructure during installation.
Diaphragm closure (DC) seals the platform legs and skirt sleeves to provide buoyancy during the installation of substructures. These closures are attached to the legs and skirt sleeves by fastening rings or flanges, that also hold the rubber diaphragms in place. Made from highly reinforced rubber, DC is designed to withstand the hydrostatic pressure during jacket flooding operations.
Grout Packer (GP) provides a reliable and robust seal between the ID of the jacket or skirt and the OD of the driven pile. When fully inflated by a gas or liquid, GP seals the annulus and grout is injected between the pile and leg.
Grout Seal (GS) assists grout packers in ensuring that the jacket pile annulus is clean by preventing mud contamination. For specific applications, GS can be used alone without GP, for example at shallow water depths. When the pile is driven through, the tension on the rubber as it slides along the pile seals and the annulus, ensures proper grouting. GS is engineered to tolerate reverse movement in the pile.
Skirt Pile Gripper (SPG) is welded onto the upper of the jackets skirt pile, helping to hold the piles firmly in position to secure the platform and ensure a secure and stable foundation. SPG provides a temporary retention of the jacket's elevation position during the leveling operations and grout process, until the grout between the pile and jacket has set and installation is complete.
Trelleborg's jacket leg can systems are meticulously designed and fabricated with the highest quality rubber polymers to ensure efficient, reliable performance. Assembled in our state-of-the-art manufacturing facility, Jacket components are fabricated using the highest quality steel and rubber and stringently tested to meet performance specifications.