Bottom supported jack up rig

Description:Depending on the water depth and remoteness of the location, these "rigs" may be jack-ups up to feet of water , or semisubmersibles, or drillships up to 12, feet of water. Jack-ups are bottom-supported units; semisubmersibles and drillships are floating units "floaters". In terms of numbers, jack-up rigs drill most offshore wells. Semisubmersibles run a distant second, and drillships come in third, though most of the major new discoveries today are being made by the floaters in deep and ultra-deep water. Oil companies "operators" select rigs that are specifically suited for a particular job, because each rig and each well has its own specifications and the rig must be matched to the well. Jack-up rigs are so named because they are self-elevating-with three or four movable legs that can be extended "jacked" above or below the drilling deck, or hull.

Views: 6093 Date: 2018-09-28 Favorited: 58