Shareholders have disgreed over management
The Russian ambassador in London has dismissed the idea that there has been a government-backed plan to attack BP, in its joint venture TNK-BP.
TNK's boss Robert Dudley has left Russia after visa difficulties.
Ambassador Yuri Fedotov told the BBC it wasn't "harassment" but the result of commonly applied rules.
The British and Russian shareholders of TNK-BP, which is half owned by Russian billionaire group AAR, have disagreed over the firm's management.
On Thursday Mr Dudley said "sustained harassment" had prompted him to leave Russia temporarily.
The comments by Mr Fedotov came after the British embassy in Moscow said the dispute was damaging economies of both Britain and Russia as well as harming the global energy market.
"The way shareholders have manipulated elements of the Russian state bureaucracy and the way this has been allowed to continue is very disappointing," an embassy spokesman said on Friday.
"We will continue to stress to the Russian government the importance of a resolution between the shareholders in full accordance with the rule of law."
In contrast, Russian shareholders say Mr Dudley has not been running the company in the interests of all those involved.
They say removing him as chief executive of TNK-BP is their only goal, but reject the idea that want to control the joint venture.
BP has already removed 150 of its foreign specialists from the country.