Jackup rig
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A jack-up rig is a type of offshore oil and gas drilling platform that may stand still on the sea floor resting on a number of supporting columns. One of the most popular designs uses 3 columns. [1]
The supporting columns may be moved up and down by a hydraulic or electrical system. The whole rig can also be jacked up when the supporting columns are touching the sea floor. During transit, the platform floats on its hull and is typically towed to a new location by offshore tugs. Jackup rigs provide a platform that is more stable than a semi-submersible platform but can only be placed in relatively shallow waters.
The rig acts as a kind of platform. This type of rig is mostly used as in connection with oil drilling.
[edit] References
- ^ Giancarlo Rinaldi (29 January 2008). Ships on legs. BBC News. Retrieved on 2008-01-30.