Underbalanced drilling pays for Statoil
Norway's Statoil has made gains of about Nkr1.6 billion ($237 million) after using underbalanced drilling on its Gullfaks field in the Norwegian North Sea.
Norway's Statoil has made gains of about Nkr1.6 billion ($237 million) after using underbalanced drilling on its Gullfaks field in the Norwegian North Sea.