The chief executive of Russia's top non-state oil company Lukoil said on Friday his firm was evaluating the implications of Western sanctions on its joint venture with France's Total.

Billionaire investor John Fredriksen is considering buying more shares in oil rig operator Seadrill after the stock's sharp fall this year, Norwegian business daily Finansavisen reported on Monday.

Industrial conglomerate Siemens AG (SIEGn.DE) said on Monday it would buy U.S. oilfield equipment maker Dresser-Rand Group Inc (DRC.N) for $7.6 billion in a move that would significantly boost the German company's oil and gas business in North America.

Thailand's top oil and gas explorer, PTT Exploration and Production Pcl, has agreed to acquire a 20 percent stake in Brazilian offshore oil and gas concession BM-ES-23 from Royal Dutch Shell for an undisclosed sum.

Christophe de Margerie, Chairman & CEO of Total, is presenting to the financial community today the outlook and objectives of Total for the coming years. This event is being broadcast live via a webcast.

Russia won't cut European gas to curb re-export to Ukraine-minister

MEPs Calls EU Authorities to Cancel South Stream Agreements with Russia

By allowing international companies such as Exxon, Royal Dutch Shell, Halliburton, and Schlumberger to carry on their pumping, the White House and its European allies assured stability in global oil markets and in the prices consumers pay for gasoline.

China’s demand growth may make it globally dominant, speakers suggest

How the Ukrainian crisis could cause tremors in the Gulf

MARKETS: BoA says Saudi Arabia could be pushing for sustained weak crude oil prices

Cheaper oil 'no big threat' to Gulf economies, say analysts

Russia's Gazprom, hit by Ukraine crisis, faces lowest gas output in history

Chevron vows to use 'lessons learned' after Angola LNG missteps

GE Oil & Gas awarded subsea equipment contract from Petrobras