Abstract: An apparatus and methods for installation of an offshore platform for supporting equipment installations is provided. The apparatus includes a platform configured to support offshore equipment supported by a structure such as a modular column assembly. The modular column assembly can be comprised of main barrel joint bundles.

Abstract: A subsea rotating control device (RCD) system (1; 2) adapted to permit a tubular work string to pass there through such that there is an annulus created between the inner throughbore of subsea rotating control device (RCD) system (1; 2) and the outer surface of the tubular work string. The subsea rotating control device (RCD) system (1; 2) comprises a system housing (10) comprising a throughbore, an upper end and a lower end (10L) adapted for connection with a BOP (18) of a wellhead. The subsea RCD system (1; 2) further comprises at least two RCD seals (302, 2302; 304, 2304) arranged for selective mounting within the system housing (10) and which are selectively actuable between an unsealed configuration and a sealed configuration.

Abstract: A valved tree member (50) for inclusion in a riser completion system (35) and suitable for use in the region of a moon pool (14) on a floating vessel (8), the valved tree member (50) comprising: one or more valve members (70) adapted to selectively permit and prevent flow of fluid therethrough, and one or more moveable stab members (76) adapted to respectively selectively provide a sealed fluid communication path between a throughbore of the riser system and the one or more valve members (70). A telescoping device (60) and a flow diverter member (66) for inclusion in the riser completion system (35) are also provided, as well as a riser completion system (35) incorporating the valved tree member (50), the telescoping device (60) and the flow diverter member (66).