Greenpeace said...two of its activists scaled the Prirazlomnaya oil platform in Arctic waters in a fresh protest over the potential threat to the environment from operations slated to start by the end of the year. Production at the Gazprom-owned rig...was delayed last year after similar action...Global majors including ExxonMobil, Eni and Statoil have agreed on deals with Russia's top oil producer, Rosneft, to enter the region. Their projects are not expected to begin extracting oil before the 2020s..."Despite massive financing for Prirazlomnaya, it is not able to guarantee safe production of Arctic oil," Greenpeace said. Offshore safety concerns have grown after BP's Deepwater Horizon oil rig exploded in 2010, killing 11 workers and spewing millions barrels of oil into the Gulf of Mexico. Prirazlomnoye is the first Arctic offshore oil deposit to be developed by Russia...Gazprom Neft, the oil arm of state gas export monopoly Gazprom, is expected to obtain a license to develop the field...Gazprom Neft and Gazprom declined immediate comments.