DSV Ocean Carrier with GDS SAT II
We are working with OS3, a division of Stabbert Maritime, to provide a high quality dive support package.
The DSV Ocean Carrier is the newest addition to Stabbert Maritime’s Ocean Services fleet. At 270 ft of length it is a true multifunctional platform. Currently the DSV Ocean Carrier is outfitted with DPII, 150T heave compensated crane, and our 10-man saturation dive package. The Ocean Carrier will make a positive contribution to any offshore maritime project.
The vessel is currently located in the Gulf of Mexico but is available for work anywhere there is a need.
Global Diving, working off the DSV DPII Ocean Carrier, is providing saturation diving services as required to disconnect the exising dual 24" hose section from the PLEM (Pipe Line End Manifold) on bottom. Once the exisitng hose has been removed from the SPM (Single Point Moor) buoy and the new hose attached, Global will reconnect the hoses to same structure.
Structural members of a downed platform were recovered to the surface by our saturation dive team. A combination of explosives, Broco underwater cutting rods and wire sawing operations were used to cut the members. Individual pieces recovered to the surface weighed as much as 92,000 pounds.
A total of 2,000 tons of structure was recovered, and at completion of the removal phase, a survey was performed of the bottom using a mesotech sonar to record and verify that the area was free of debris.
A downed platform was covered by a mud slide with oil leaking from numerous locations. The leaking oil was collected in several oil domes installed over the leaks. Hoses were connected to the separators located on top of each dome and ran to the surface with a section of floating hose on the surface. We removed the existing hoses once they were slacked to the surface with a vessel tugger. After retrieving the old hoses, we pulled new hoses in place.
We were hired to work on a South Marshall Island pipeline in 380fsw. Strain gagues were installed and operated by our saturation divers and monitored on the surface to determine the approximate location of the obstruction.
Once the location of the blockage was determined our divers used hot tap tooling to penetrate the pipe, a hose was attached through which a decontamination fluid was pumped, at 6,000 psi, to break up the obstruction. This process was carried out in three locations along the pipeline alignment.
Divers hand jetted around conductor located in GOM block Main Pass 313. Saturation divers used two 6X6 pumps to get below the natural bottom where they installed a diamond wire cutting saw. The saw was a hydraulic feed unit with a rotating diamond laced wire rotating that the diver mounted to the caisson in 292fsw (12” below mudline as required by MMS). After the 30” conductor was cut, it was recovered to the DSV Ocean Carrier deck by the vessel's 150 ton crane.
After all work was completed, a final bottom scan survey shot was taken to verify the stub depth and bottom area was clear of debris.
Project Details
Project News
- 11/1/10: OS3 DSV Ocean Carrier (Stabbert Maritime)