"In 2009 there was an attempt to redistribute oil wealth to the Libyan people, but the reform was blocked and now it's going to explode in their faces." Libya's oil wealth makes the uprising fundamentally different from the popular revolts that toppled leaders in Egypt and Tunisia, which are not top oil exporters.
Operators in Libya include Eni, BP, Royal Dutch Shell, Repsol, OMV and Statoil. Many are repatriating staff.
"I have been following oil issues for 30 years and had not seen anything like what is happening now since the 1970s," said Davide Tabarelli, head of energy think-tank Nomisma Energie. "In the 1970s, it was all concentrated in a few countries , we had the war with Israel . Now it's worse."