Air Springs Supply, Pronal national distributors, will be introducing a jacket equipment system that is designed to facilitate launching and positioning of oil and gas marine platforms.
Pronal Packer-Can system for the installation of platform legs includes the steel pipe Packer Can, grouting packer, grout seal, mud wiper, sacrificial inflatable diaphragm and other products required to complete the operation.
The Packer-Can system, installed into the pipes through which rig legs are guided to the ocean floor, is included in new ranges of offshore and underwater construction, engineering and maintenance equipment from Pronal.
Pronal have made the deep sea flotation tanks used to raise wreckage from the ocean liner Titanic 4000m beneath the icy North Atlantic.
The steel pipe structure of the Packer-Can system contains inflatable diaphragms, inflatable grouting packer and non-inflatable grouting seal and mud wiper, all constructed from high-strength fabrics and synthetic rubber.
The inflatable diaphragms seal the platform legs for buoyancy until piles are introduced while platforms are being positioned after launch, at which stage water is introduced into the leg to set it up correctly. The pile is then introduced into the leg to perforate the diaphragm and anchor the pile into the ground.
The inflatable grouting packer of the system ensures tightness of the annulus pile/leg before and during column grouting and to avoid mud rising after piling. The inflatable packer is fixed inside the leg with two series of welded flanges. It is inflated through an NPT connection.
The non-inflatable grout seal ensures tightness of the annulus pile/leg. It is manufactured with a static O-ring so it is not necessary to install any inflation line to it. Grouting packers and seals are available separately from the Packer Can system.
The mud wiper’s function is to prevent ingress of mud that might obstruct the inflation of the grouting packer when the pile punches through the diaphragm
The system is available in different dimensions to suit platform legs of different sizes. The thickness of the system’s diaphragms or number of layers of reinforcing used in their construction is determined by the depth at which they are used. The diaphragms and other components are tested by Pronal to 1.5 times user specifications.
Pronal design and manufacture standard and custom-engineered flexible structures aimed at ensuring floatability. These structures are used to lift and position underwater loads and also to assist divers to move equipment on the seabed.
Pronal have developed new, flexible technical solutions intended for engineering, construction and maintenance of drilling platforms as well as seabed operations. The products are developed according to specifications developed in accordance with the extreme conditions in which they are used.
Pronal products include underwater parachutes and lifting units, deep sea flotation tanks, recovery and decommissioning equipment, jacket equipment system including complete “packer-can” system for installation of platform legs, buoyancy bags and cushions, pipe stoppers and plugs, hyperbaric welding habitat door and sleeves, clamping systems pipeline intervention systems, overlaps, oil booms, flexible tanks, push-pull stoppers, shock cells, barge bumpers, rub strips, pipe pullers, oil membranes and flex connectors.
For special applications, specific systems are designed and modified by Pronal’s engineering department to deal with situations subject to particular constraints.