BNP Paribas, which is facing a potential $10bn fine for breaking U.S. sanctions, has handed over to U.S. investigators files covering many years of its dealings with leading companies in the oil market.
Lamprell has suffered a big pay revolt at its annual general meeting – the third year in a row that shareholders have rebelled against pay deals at the oil rig builder.
BP's profit from its stake in Russia's Rosneft was hit by the falling value of the ruble, pushing its contribution to BP's underlying profit down by 75% to $271m (£161m) in the first three months of this year.
BP's partnership with Rosneft is again under the spotlight after the chairman of the Russian state-owned oil firm was added to the US government's sanctions list.
BP will come under pressure at its annual meeting this week to explain how its decision to take a 20% stake in Russia's biggest oil company Rosneft is going to be affected by the country's standoff with the west over Crimea.
BP has been sucked into the row over Russia's annexation of Crimea with calls for the delisting from the London Stock Exchange of Rosneft, the Moscow-based oil company in which the British group has a 20% holding.
BP is closer to restoring its operations and reputation in the US after agreeing a deal with environmental protection authorities that it will enable the oil firm to bid for new drilling rights in the Gulf of Mexico.
Chevron plans to increase its oil and gas production by 20 percent by 2017, but most of the growth will be abroad, in part because U.S. policy isn't "pro-development," CEO John Watson told CNBC's "Closing Bell" on Tuesday.
Nigeria's president on Thursday suspended the governor of the country's central bank for "financial misconduct" and said his tenure was "characterised by various acts of financial recklessness"
BP and Shell have been forced on the defensive by new allegations of price-rigging made in a US lawsuit brought by four oil traders.
BP has become embroiled in an acrimonious slanging match with one of the US Gulf states most affected by pollution from the Deepwater Horizon blowout in 2010 with the two sides trading blows over the oil company's cleanup record.