Landslides and floods dampen Khubal spirits

Vol 20, PW 20 (29 Jun 17) Exploration & Production

Heavy rains and flooding in north-east Tripura are delaying ONGC plans to explore the untapped potential of its promising Khubal field at AA-ONN-2001/1.

This report learns a landslide at the drill site is stopping ONGC from spudding exploration well MUAB in the Khubal discovery area. "It has been raining continuously for seven days," said a Tripura source on June 20.

"Only when the rain stops and we get a few days of sunshine can we spud the well." This month India's meteorological department measured record rainfall of 695-mm in Tripura against the normal 421-mm, according to local news reports. ONGC wants to drill MUAB to 3374 metres TD using its own 2000-hp rig BI-2000-1, already on location.

At the same block, progress has also slowed at well DOAA where John Energy rig John-31 reached 2663 metres of the planned 3800 metres TD by June 15. This Rs60cr ($9.4m) well was spud on April 16.

At well KHBK_SUB, Quippo rig Quippo-5 reached 3243 metres of the 3486 metres TD by June 15. This Rs27cr ($4.2m) well was spud on March 30.

ONGC originally anticipated each of the wells would take up to four months to drill. ONGC estimates it can produce 600,000 cm/d from Khubal rising to 3m cm/d by 2020, based on the results of three promising gas discoveries at wells Khubal-4, Khubal-5 and Khubal-7.

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