ONGC bought GSPC gas field stake for half the asking price of Rs 20k cr, replacement cost: Ex ONGC chairman Industry-Economic Times — October 21, 2018 comments off ONGC, D K Sarraf said, has been in the business of acquisition of oil and gas assets for decades, with its overseas investment arm ONGC Videsh Ltd (OVL) amassing 41 projects in 20 countries.