Brazil oil regulator: Chevron leak not "negligence"

BRASILIA (Reuters) - An oil spill off the Brazilian coast in November was not the result of negligence by Chevron or drill-rig operator Transocean, Brazil's oil regulator said on Thursday, providing a boost to the companies and their executives as they face criminal charges.

Brazil to charge Chevron executives over fresh oil leak

Brazilian prosecutors say they will bring criminal charges against 17 executives from the US oil company Chevron and drilling contractor Transocean after a new leak of crude.

Chevron lobbies Russia for access to Arctic oil

US giant Chevron held Arctic oil exploration talks in Russia on Thursday after Prime Minister Vladimir Putin hinted that Moscow may let private firms access the fields to help boost development.

Bulgaria bans shale gas drilling with 'fracking' method

Bulgaria has become the second European country after France to ban exploratory drilling for shale gas using the extraction method called "fracking".

Chevron's Welsh refinery buyer considers impact of fatal blast

The prospective buyer of Chevron's oil refinery in Wales is examining whether an explosion which killed four people at the site this week could affect the deal.

Valero, a US refining giant, agreed to buy the plant for $730m (£445m), plus $1bn for oil stocks and other businesses in March. The deal is due to close in the third quarter of this year.