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The PY-3
field is located off the East Coast of India 80 km south of
Pondicherry in water depths of between 40 m and 400 m. The Cauvery
basin was developed in the late Jurassic/early Cretaceous period
and straddles the present-day east coast of India.
The licence, which covers 81 km2, produces oil of high quality
light crude (49° API). The field was developed using floating
production facilities and subsea wellheads, a first for an
offshore field in India.
The facility at PY-3 consists of the floating production unit, ‘Tahara’,
and a 65,000 DWT tanker, ‘Endeavor’, which acts as a floating
storage and offloading unit. There are four sub-sea wells tied
back to Tahara. Tahara has a three-stage crude oil separation
system, with the first two stages being three-phase separators and
the third stage a two-phase separator. Actual liquid processing
capacity on Tahara is 20,000 stbd with 17 MMscfd of gas handling
capacity.
The field currently produces associated gas in the range of 3.5
MMscfd. This produced gas is used as fuel gas with excess gas
being flared. The stabilised crude oil is pumped from Tahara to
Endeavor for storage and offloading to shuttle tankers. Crude oil
from the PY-3 field is sold to CPCL at its refinery in
Nagapattinam, approximately 70 km south of the PY-3 field.
The PY-3 offshore oilfield was discovered
on licence CY-0S 90/1 by ONGC in 1988 and, as a result of the
development programme instituted by HEPI, was brought into production
in November 1997.
HEPI is the Operator of the PY-3 field, and is party to a PSC
together with ONGC, TATA and HOEC. The
participating interests (per cent.) for this licence are as
follows:
|
Participating Interests
(%) |
|
Area |
HEPI |
TATA |
HOEC |
ONGC |
|
PY-3 |
18 |
21 |
21 |
40 |
|
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