MOSCOW (Reuters) - Dmitry Avdeyev, who has been managing finances at Russia's biggest oil producer Rosneft <ROSN.MM> since June 2012, has left the company after it completed the $55 billion (36.2 billion pounds) acquisition of TNK-BP <TNBP.MM>, local press reported on Friday. Kommersant business daily, citing unidentified sources, tipped Svyatoslav Slavinsky, a senior banking services executive with Citigroup <C.N> in Russia, as Rosneft's new vice president for finances.

Russian state oil giant Rosneft announced Wednesday the creation of the world's top listed oil firm as it sealed a $56-billion acquisition of the British and local stakes in the lucrative but strife-torn joint venture TNK-BP . The deal creates a Russian government-run supergiant with fields and refineries stretching from Eastern Europe through Siberia to the Pacific Coast. It also closely links BP's future with a country that is the world's top oil producer but is also criticised for the inefficiency of its state-owned energy firms.

By Kathy Finn NEW ORLEANS (Reuters) - The chief executive of Transocean Ltd <RIG.N>, owner of the rig destroyed after BP Plc's <BP.L> Macondo well blew out in 2010, told a federal judge on Tuesday that his workers made mistakes that day, but were not responsible for overall safety on the rig.

By Dmitry Zhdannikov LONDON (Reuters) - BP's oil trading division, the alma mater for a generation of the world's top traders and a former cash-generating machine, is under greater scrutiny after becoming a weak link for the oil major. The company says the unit, which once generated a tenth of profits, was responsible for its failure to fully deliver on a pledge to improve performance at its refining division.