Oil India Limited (OIL), India's second largest National Exploration & Production Company, through its exploratory efforts has made its second Hydrocarbon Discovery in the onland KG Basin NELP VI Block: KG-ONN-2004/1 in the month of May 2018 at well Thanelanka-l in Andhra Pradesh. Earlier, a gas discovery was made at well Dangeru -lin Andhra Pradesh in the block. The well Thanelanka-1 is the first High Pressure - High Temperature (HP-HT) well drilled by OIL and has encountered multiple sands in Gollapalli Formation of Late Jurassic-Early Cretaceous and one zone in Raghavapuram Formation of Intra Cretaceous. On testing, the HP-HT zone in the depth range 4912-5159 m in Golapalli Formation produced gas @ 1300 scmd through 16/64" bean choke. Presently, the well is under further testing.