RCD

The rotating control device seals around the drillstring while it rotates during operations, to stop hydrocarbons or other fluids releasing into the atmosphere.

RGH

Riser Gas Handling. Integral to the drilling riser, AFGlobal’s RGH system provides solutions for retrofit and newbuild applications using specialty riser joints and equipment.

Riser

A pipe within which fluids flow upwards, for example, from a wellhead to a platform. In a drilling riser, drilling mud and cuttings flow back up the annulus to the surface, after the mud has passed downwards to the BHA, through the riser’s internal drill pipe.

Riser Adapter

Crossover between riser and flex/ball joint.

Riser Handling Tool

Tooling to enable the safe lifting and deployment of single or multiple risers offshore. It attaches to the upper end of a riser joint, and lifts and lowers it in the derrick.

Rotary Table

Device that joins to the upper end of a riser joint to permit lifting and lowering of the joint and the assembled riser string in the derrick by the elevators.

ROV

Remotely operated vehicle (ROV). An unmanned, free-swimming subsea vehicle controlled remotely from a vessel or offshore platform. The ROV is equipped with manipulator arms and tools that enable it to perform tasks such as valve operations or hydraulic functions and other general tasks. ROVs can also carry tooling packages for undertaking specific tasks such as pull-in and connection of flexible flowlines and umbilicals, and component replacement.

Running Tool

Device that joins to the upper end of a riser joint to permit lifting and lowering of the joint and the assembled riser string in the derrick by the elevators.