Highlights of oil news from Nigeria, Ghana, Liberia and Tanzania

>Hallin Marine, a Superior Energy Services company, has announced the award of its latest subsea pipeline repair project off the African west coast

Liberia has marked out 13 new, ultra-deep offshore oil blocks and will soon auction about half of them off to international oil firms

The Oil & Gas Global Salary Guide 2011 comes after a long period of economic downturn