The Sedco A is a semi submersible oil rig which is used by Shell mainly for exploration drilling. It is mobile and is towed to location by huge Smit Lloyd tug boats. Three huge anchors from each corner keeps it on location during the drilling phase. This was the largest rig used by Shell. During the peak drilling years we had 8 rigs working on the continental shelf, offshore Sarawak and Sabah.
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I worked on the Sedco Alpha in 1977 while working for Schlumberger and then living in Seria, Brunei.
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