 | Drilling; Engineering Geology; Jackups; Marine Drilling; Oceanography; Offshore; Petroleum Geology; Rigs | The Noble John Sandifer jackup rig, built by Levingston Shipbuilding Company in Texas. This rig was constructed in 1975, can hold up to 80 persons, and drills to a depth of 20,000 feet. Drills in the Gulf of Mexico at the Bay of Campeche. |