Shell is within a few weeks of firing up what will be a closely watched drilling campaign offshore Namibia in the same block that hosts its large Graff oil discovery.

The supermajor hit oil with its deep-water Graff-1 probe in the Orange basin earlier this year and immediately drilled a follow-up well called La Rona.

While Shell unveiled the results of Graff-1, it has said nothing public on the outcome of its La Rona-1 well, with officials even declining to clarify whether it was an appraisal or an exploration well.