* Rosneft has agreed oil deals with BP worth over $11 bln
* Rosneft also to sell 400,000 tonnes of oil from Kozmino
MOSCOW, Dec 3 (Reuters) - Russia's top crude producerRosneft is to sell up to 1.8 million tonnes of ultralow-sulphur diesel to BP from the Baltic Sea port ofPrimorsk for up to $1.9 billion, it said on Tuesday.
Rosneft, in a regulatory filing which said its board hadapproved the deal, did not disclose the timeframe for supplies.
It will also sell 400,000 tonnes of crude oil from thePacific port of Kozmino to BP Singapore with a combined pricetag of up to $345 million, Rosneft added.
Earlier this year, Rosneft revealed deals worth more than$11 billion to sell its crude oil and products to BP, which ownsalmost 20 percent in the state-controlled oil company.
BP became Rosneft's second-largest shareholder, behind onlythe Kremlin, after Rosneft took over BP's Russian venture TNK-BPfor $55 billion in March.
But participation in Rosneft's ownership has been slow totranslate into cooperation in upstream projects, while ExxonMobil has signed a flurry of deals with Rosneft to tapthe Russian Arctic together.