(Reuters) - Following are some details about Iran's principal energy partners and joint projects: ASIA: * JAPAN - Biggest single buyer of Iran's crude. Imported 519,518 barrels per day (bpd) in Q1 2009. Iran was Japan's third-largest supplier. -- INVESTMENT -- Japan's INPEX holdings saw its 75 percent stake in Iran's huge Azadegan oilfield cut to 10 percent in 2006 when talks fell through on a development plan. * CHINA - Second-largest buyer of Iran's oil. Imported 484,093 bpd in Q1 2009. Iran is China's second-largest crude supplier. -- China's state-run Zhuhai Zhenrong, which started buying oil from Iran more than a decade ago and was among the first buyer to heed Tehran's call to pay in euros instead of U.S. dollars, extended its agreement with National Iranian Oil Co (NIOC) to import 240,000 bpd of crude for 2009. -- Top refiner Sinopec Corp. agreed to import 150,000-160,000 bpd of Iranian crude this year, unchanged from 2008. -- INVESTMENT -- China's National Petroleum Corporation (CNPC) signed a $4.7 billion contract with a Chinese state firm in June to develop a phase of South Pars, replacing France's Total. -- CNPC signed a memorandum of understanding for development of the South Azadegan field earlier this year. Under that deal, it would pay 90 percent of the costs of a $2.5 billion project. -- CNPC is in talks with Iran for $3.6 billion deal to buy LNG from Phase 14 of South Pars project. CNPC is also in talks to explore and develop energy reserves in Iran's Caspian. -- CNPC signed a deal with the NIOC in January to develop the north Azadegan oilfield. The deal is worth $2 billion in its first phase. Under the first phase lasting 48 months, the capacity would reach 75,000 barrels per day (bpd). The tenure of the project is 12 years. -- China's Sinopec Group finalized a $2 billion pact to develop Iran's huge Yadavaran field in December 2007. -- The China National Offshore Oil Corp (CNOOC) is in talks to finalize a $16 billion dealt to develop the North Pars gas field and build a liquefied natural gas (LNG) plant. * INDIA - India imported 426,360 bpd of Iran's oil in the fiscal year 2008/09, or 9.5 percent more crude versus a year earlier. Iran was India's second-largest supplier. India has supplied Iran's imported oil gasoline and diesel. -- INVESTMENT -- India's ONGC, IOC and Oil India Ltd are in talks to invest $3-$5 billion to develop gas reserves at the Farsi block. ONGC and the Hinduja group are negotiating for a role in Azadegan oilfield development and to buy gas from South Pars. ONGC is also in talks to develop Caspian oil and gas reserves. -- India had been part of the $7 billion so-called "peace pipeline" project, but stayed away from talks last year as it wanted a bilateral deal with Pakistan on transit costs first. Iran said in May India could still join the project.

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