India's Oil & Natural Gas Corp. (ONGC) announced three offshore and one onshore discovery during Q1 of its fiscal year 2013-2014, which ended 30 June, and one additional onshore discovery in August 2013 (Q2).
Offshore:
New prospect discovery: exploratory well KGOSN041NANL-2, in the Krishna-Godavari (KG) offshore basin, block KG-OSN-2004/1, offered in NELP VI round, about 21km south of Narasapur, on India's east coast. On testing, Object-I (interval 1249m–1231m) flowed gas at 66,601cu m/d through 1/4-in. choke. This is the fourth discovery in the block, after Chandrika South, Alankari, and Saveri, signifying the hydrocarbon potential of the block. ONGC says this discovery increases the viability of a possible cluster development for the block.
New pool discovery: exploratory well GK-28-9 was drilled in the eastern fault block of the GK-28 structure in the Western Offshore (Kutch) basin off Gujarat state, on GK-28 PML. On conventional testing, objective-I (interval 1251m-1249m) in the Nakhatrana formation flowed gas at 2, 21,950cu m/d through ½-in. choke. This discovery will help ONGC to reassess estimates in the fault block to the east of wells GK-28-1 and GK-28-2.
New pool discovery: Exploratory well GK-42-3 was drilled to the north-northeast of discovery well GK-42-1 in the eastern fault block in Western Offshore (Kutch) basin as an assessment well to upgrade the reserves and assess the potential of the Jakhau reservoir, which was tested in well GK-42-1.
On conventional testing, objective-II (interval 1276.5m-1274.5m) in the Nakhatrana formation has yielded gas at 2,24,544cu m/d through ½-in. choke. ONGC will reassess estimates in the fault block to the east of well B-42-1, following this discovery.
Onshore:
New prospect discovery: exploratory well SRM-AA in Godavari Onland Petroleum Mining License (PML), in the Krishna onshore basin was drilled to 4,056m depth in August. Conventional testing of interval 3,357m-3,360m in Rahgavapuram shale formation produced gas at 74,600cu m/d through 6-mm bean.
New pool discovery: exploratory well Gandhar-686 was drilled in the Gandhar Extension-VI ML area to explore hydrocarbon prospectivity of Gandhar sands GS-5C, GS-6B, and GS-9. On testing, objective-III (interval 2659.5m - 2656.5m), in GS-11 sand, flowed oil at 75.24cu m/d, and 6433cu m/d natural gas through 6 mm bean.
This new pool discovery to the southwest of the main Gandhar field has opened up a significant area for exploration and exploitation.
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