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CHAPTER TWO
Developments of Energy Resourrces
that found a new pool in “D1” Field offshore western India. ONGC
estimated initial oil in place at D1 at 600 million barrels, but after
the new pool discovery the company has hiked the estimate to 1
billion barrels. D1, in 85- 90 m of water 200 km west of Mumbai,
consists of four blocks: D1-4, D1-12, D1-14, and D1-2/5. The first
well in the D1-4 block was drilled in 1976. The low gas- oil ratio
and the then- understanding of the reservoir led to a slow pace of
exploration and appraisal, and 12 wells were drilled in two phases.
After completion of phase 2, the field peaked at 17,500 barrels per
day of oil in 2009. While its 2012 output declined to 12,500 barrels
per day. The company has set an integrated development plan for the
D1- 4 and D1- 14 blocks that is expected to raise production to 36
thousand barrels per day in 2013.
The first development well on the D1-14 block, was spudded in May
2012, the total depth of the well, reached 2,830 m and 142 m of oil-bearing
zone was encountered. On full development of D1 Field, production is
expected to rise to 60 thousand barrels per day. The additional development
program will start yielding results from January 2014. Meanwhile, ONGC
reported 3 other discoveries in Q3 2012, namely:
The “Madnam-3” well on NELP CY-ONN-2002/2 block in the
Cauvery Basin in Tamil Nadu, produced 725 barrels per day of 35.7°
API oil and 406 million standard cubic feet of gas.
The “Mukkamala-1” exploratory well on “PEL 1B” block in the Krishna-
Godavari Basin, flowed 1.36 million standard cubic feet of gas.
The “BH-86” well on PEL WOFF 123 block offshore Mumbai,
produced 280 barrels per day of oil and 4 million standard cubic feet
of gas
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Oil and Gas Journal, 14/8/2012
