A Rocky Road Led to Big Russian Oil Deal
Deal to create giant new Russian oil company created from Tyumen Oil, Sidanco and Onaco, with BP, minority owner of Sidanco, investing billions to buy half new company got off to rocky start; BP would not specify how many billions it planned to spend; BP executives led by Rodney Chase came to Russia last fall with figure, but it was not to Russians' liking; Mikhail M Fridman, leading figure among investors negotiating with BP, recalls that he tried to be noncommittal but was also holding out for better offer; BP agreed last week after months of wrangling to pay $6.8 billion in cash and stock; would choose new company's top executives, with Fridman's Alfa Group and his partners--Leonard Blavatnik, Russian-born American head of Access Industries, and Victor Vekselberg of Renova Group--holding half-interest but ceding senior management positions; deal puts foreign company in control of major producer in Russia's energy heartland for first time; photo (M)