Statoil is to use Transocean Leader, an Aker H-4.2 semi-submersible drilling rig, to drill the Troll oil and gas field in the Norwegian North Sea.

The project includes the drilling, completion, workover, plugging and abandoning of three wells in block 31 / 2 of production licences 054 and 085, which are operated by Statoil.

The drilling is to begin next month and will be complete by 1 August 2012.