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Drilling Rigs - Semi-Submersible

A Semi-submersible platform or rig, is a mobile structure used for drilling for oil and natural gas in offshore environments. Their superstructures are supported by columns sitting on hulls or pontoons which are ballasted below the water surface. They provide excellent stability in rough, deep seas. Semi-submersible rigs can be moved from place to place; and can be ballasted up or down by altering the amount of flooding in buoyancy tanks; they are generally anchored by cable anchors during drilling operations, though they can also be kept in place by dynamic positioning. Semi-submersibles can be used in depths from 600 up to 35,000 feet (180 to more than 10,600 m).
Scarabeo 7 Dec 2008 First day working on board
Scarabeo 7 Dec 2008 Jet Stream plumbing Below the living area moving equipment up to the area to be worked on ....
Sedco 711 Being berthed at Invergordon 4th,Aug,13
SEDCO 712 In the Queens Dock Invergordon 14.8.13
Sedco 712 and 711 at Invergordon 28th Aug,2013.
Nigg 1974 East Ball Wonder that smashed ball in the other picture is this one I was working on. I was on the one to the ...
Nigg 1974 Fabricaters This is taken from about the same time as the other I reckon. Needless to say the BP gestapo forbade...
Nanhai Tiao Zhan (previously Stadrill) Nanhai Tiao Zhan in the South China Sea in 2010 (Liuhua 11-1 oilfield). Owned and operated by CNOOC....
Petrobras P36 March 2001 Explosion in leg sank in 1200m of water
Sedco712 Being made ready to leave the Cromarty Firth on 18/10/13 with the Tugs Olympic Poseidon,Olympic Octo...
BP Andrew 2012
north sea platform I took this picture in March 2007. At the time I was on the Borgsten Dolphin, which was under tow. ...

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