Spartan 151 Jack-up Rig
June , 2012
Operating from Global’s DSV Sand Island, divers performed an underwater survey of the spud cans on the Spartan 151 Jack-Up rig. Divers removed the well cap from the well head stub and then assisted in the installation of a overshot riser.
Work was completed in the Cook Inlet, an area notorious for up to 30-foot tidal swings and zero visibility water. Water velocity was measured using a Doppler Current Profiler and limited bottom times to 30 – 45 minutes per tidal swing.