ONGC starts Mahanadi drilling

Vol 13, PW 2 (02 Jul 09) News in Brief

Discoverer Seven Seas has begun appraisal drilling for ONGC at MN-OSN-2000/2 in the Mahanadi Basin offshore Orissa – one of ONGC’s most promising exploration blocks.

PETROWATCH learns Discoverer â€کspud’ its first appraisal well at the NELP-II block on June 17 in water depths of 1048 metres. “Lots of preparation is required, including casing,â€‌ confirms a source.

“Drilling will take anything between 45-60 days. Testing is conditional and this could take longer.

â€‌ ONGC is planning a single appraisal well to TD of 2340 metres at the 4061-sq km block, before diverting Discoverer to the KG Basin. DK Pande, ONGC exploration director, told Frontline magazine in March 2008 that estimated in-place reserves at discoveries MDW-2A and MDW-4A at MN-OSN-2000/2 are between 0.362 and 1.03-tcf and that appraisal could add 1.89-tcf to reserves.

ONGC (40% and operator) shares this block with IOC, GAIL and Oil India (each with 20%). A PSC was signed on July 17, 2001.

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