Diamond Offshore Drilling, Inc. has selected Mobile based Offshore-Inland Marine & Oilfield Services (OIS) to perform upgrades and modifications to the Ocean Voyager. The rig recently arrived at Mobile Middle Bay Port for upgrade work related to the Voyagers’ upcoming Pemex contract period. Fabrication and installation of high-pressure mud piping, Fabrication and installation of four new, Potable Water Tanks and pumping system, Under-deck blasting/painting, Helideck blasting/painting/marking, Accommodations refurbishment, Installation of a Mud Gas Separator, Fabrication and installation related to a, 12-man accommodation unit, Fabrication and installation related to AC…