The
company
reduced
its
estimated
proven
plus
probable
reserves
from
its
previous
estimate
of
20.4
million
barrels
to
12.1
million
barrels
while
estimated
proven
reserves
were
reduced
from
4.7
million
barrels
to
3.8
million
barrels.
Carnarvon
said
the
reason
for
the
decline
was
due
to
drilling
results
and
well
performances
throughout
2011
being
below
expectations
which
resulted
in
a
number
of
fields
having
their
expected
ultimate
recovery
revised
downwards.
It
noted
its
drilling
of
the
volcanic
reservoir
in
its
WBEXT
and
L33-2
areas
in
Thailand
had
been
"particularly
disappointing"
compared
to
initial
discoveries.
Reserves…