The Russian roulette - and next stop, Libya
Russian authorities are expected to revoke TNK-BP's licence to operate the huge Kovykta field, with an estimated 2 trillion cubic metres of gas reserves, although a final decision was delayed on Friday for two weeks. A bigger headache still for Lord Browne's successor, Tony Hayward, is the impending sale by BP's Russian partners of their 50 per cent stake in the joint venture, which is responsible for about a quarter of the group's reserves and total production. Gazprom, the Russian state-controlled gas giant, is the likely buyer and could try to take over other BP assets.
With continuing uncertainty over TNK-BP, it must have been doubly galling for Mr Hayward, who became chief executive on 1 May, to hear Tony Blair announce his company's $900m (£450m) gas deal with Libya last week before it had been signed. BP has not been dubbed "Blair Petroleum" for nothing. The deal gives BP the right to drill 17 wells in and off the coast of the north African state, a project in which it could invest up to $2bn over the next decade. BP returns to the country more than three decades after being thrown out - along with other foreign oil firms - when Libya's leader Colonel Gaddafi nationalised the industry.
The Libyan deal is not as large as TNK-BP (which saw BP invest $6bn). Nor is it as groundbreaking - when it was signed, TNK-BP was the first foreign energy joint venture of its kind in Russia. Besides this, BP's British rival Shell and the Italian oil group Eni are already active in Libya, which has smaller reserves than those of Russia.
Mr Blair's headline grabbing notwithstanding, Mr Hayward can notch up the Libya deal as BP's first major agreement on his watch. It is also the first piece of good news for months at BP, which has been dogged by investigations over its safety record and distracted by succession planning in the run-up to what was to become the messy departure of Lord Browne. (The former chief executive quit over revelations that he had lied to a High Court judge over how he met his boyfriend.)
Mr Hayward has only just completed his first month in the top job at BP, where he was previously head of exploration and production, so he would have been involved in the group's major decisions. The new regime is slowly starting to make itself felt. Last week it announced the departure of the head of refining, John Manzoni, who was criticised by US safety regulators over the explosion at a BP refinery in Texas that killed 15 workers. He will be replaced by Iain Conn, the head of safety and environment. Analysts expect other personnel changes, but say it would be wrong to expect major changes in strategy so soon.
Making new appointments is the easy part for Mr Hayward. Deciding whether to change BP's strategy is altogether harder. It's important to put the revocation of the Kovykta licence in perspective. The Siberian field certainly is huge - it represents 6 per cent of BP's total non-proved global oil and gas reserves (or a fifth of the TNK-BP total). The threat to the Kovykta licence was far from unexpected. As one veteran auditor of Russian oil companies puts it: "It's par for the course. For TNK-BP, losing the Kovykta licence or having to renegotiate was a case of not if but when".
Oil companies are used to having to operate in politically unstable parts of the world; Russia is no different, and its government has been reviewing foreign investment in its energy sector for some time. At the beginning of the year, Shell had to dilute its stake in the $20bn Sakhalin 2 gas project and cede control to Gazprom.
Because it is getting harder to find new oil and gas reserves, the bargaining power of host governments such as Russia is growing. BP's replacement reserve ratio - which measures how much new oil a company is finding to replace the oil it is pumping out of the ground - is above 100 per cent, so its reserves are still growing. But, using the Securities Exchange Commission standard, BP's ratio, has fallen every year since 2002, when it was 153 per cent, and by last year it stood at 114 per cent.
BP's current reserves situation is actually more healthy than that of its rivals, especially Shell. Between now and the end of the decade, Citigroup analysts expect BP's production growth to average just over 6 per cent per year. Beyond that, its long-term production will depend on the size of its unbooked reserves. These stand at about 40 billion barrels of oil and gas. But over a quarter of these reserves are in Russia, where nothing is ever certain. Clearly, BP cannot abandon Russia, even if it wanted to.
When the TNK-BP deal was signed in 2003, Lord Browne was rightly praised for having pulled off a coup. For a relatively cheap price, BP had added billions of barrels to its reserves, boosted production and gained a sizeable foothold in Russia. It would be absurd, four years on, to criticise the deal, but it has had a huge influence on the rest of the company's strategy.
Because it scored an easy hit with TNK-BP, the company - unlike Shell - has hardly invested in hugely expensive "non-conventional" exploration and production projects, such as liquefied natural gas (LNG) or oil sands (a laborious and energy-intensive process in which oil is extracted from tar sands).
Thanks to its investment in cheaper conventional projects, the profit margins on BP's projects are, according to Citigroup, about 50 per cent higher than those of Shell and Total. But another result of this relative lack of investment is that BP's nine largest projects have less than half the reserves of Shell's nine largest. So if TNK-BP starts to unravel, BP does not have any "mega project" to fall back on.
Mr Hayward will have to decide whether to start invest more heavily in mega projects like LNG. Jon Rigby, an analyst from UBS, says: "BP has been largely content to stay away from unconventional technologies such as gas-to-liquids and oil sands, which Shell is investing heavily in, as its Russian exposure has offered similar characteristics of longer life but lower return. A big question is whether Hayward will take the view that, if it's going to get more difficult in Russia, he now needs to increase the company's exposure to these unconventional projects."
If Mr Hayward does decide to go down this route, BP will find it lacks Shell's first-mover advantage which has already picked the best projects.
The signing of the deal with Libya almost four years to the day after TNK-BP was formed is just a coincidence. But it will be interesting to see whether, in four year's time, the terms of that deal, too, have changed. As Kevin Rosser, the head of oil and gas at specialist risk consultancy firm Control Risks, says: "With any agreement signed with a host government, there is always a chance that the terms will be changed in the future. There are no guarantees."
New World Order: Why Western producers must learn humility
Kevin Rosser, head of oil and gas at the specialist consultancy firm Control Risks, says that foreign oil firms such as BP will not be hounded out of Russia altogether, but will have to settle for less profitable terms in future.
"The trend in Russia is towards greater state control over the natural resources sector, without crowding out the private sector entirely. Most people look at Russia and feel disturbed at what has happened in the last few years. But we have not, in fact, seen the wholesale exclusion of Western companies.
"It's not that the door is closed for foreign companies in Russia, but to succeed they will have to agree new and less favourable business models with the Russian government. PSAs [production sharing agreements] or deals where foreign companies have majority control are looking anachronistic.
"There are fewer and fewer places in the world for companies to go, and this has dramatically increased the negotiating power of host governments. In an opportunity-constrained industry, Western companies can't afford to ignore Russia - even if that means having to radically rethink the business model."
BP's New Boss: 'Turtle' who chose to swim against the tide
The West Ham-supporting Tony Hayward is said by colleagues to be more down to earth than his predecessor, Lord Browne, who owned a home in Venice and was known for his love of the finer things in life.
But like Lord Browne, Mr Hayward has spent his entire career at BP. Previously the head of exploration and production, he stepped into the top job last month after the scandal surrounding Lord Browne's attempts to keep his private life out of the media.
Along with John Manzoni - who resigned last week as head of refining - Mr Hayward was identified back in the Nineties as one of Lord Browne's "turtles", Taken from the Teenage Mutant Ninja Turtle cartoon characters, the name referred to the young acolytes being trained by their "master" (Lord Browne).
Mr Hayward wrote in an internal memo last year: "We have a leadership style that probably is too directive. The top of the organisation doesn't listen hard enough to what the bottom of the organisation is saying." This criticism was interpreted by media commentators as an attack on Lord Browne, but Mr Hayward said it was directed at himself and his team.