Petroleos Brasileiro SA plans to install the first of a new generation of wet Christmas trees in April at the 3 Marimba well in 400 m of water in the Campos basin off Rio de Janeiro. The tree is designed to operate in water as deep as 1,000 ft, but the 3 Marimba installation will afford Petrobras an opportunity to test in relatively shallow water the equipment used to lower the tree to the seabed. The tree, 9.2 m long and weighing 22 tons, is to be lowered from a dynamically positioned vessel by means of a riser and seated on the wellhead. Technicians will use a television camera mounted on a remotely operated vehicle to...

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