India’s ONGC Videsh Ltd (OVL) is negotiating with National Iranian Oil Company (NIOC) to acquire a 20% stake in Iran’s Yadaravan oilfield, reported Business India.   Seyed Mehdi Hosseini, NIOC’s acting managing director, said the Iranian government has linked the oilfield development to India’s proposed purchase of LNG from Iran.   The 20% equity interest…