The
Chinese
state
explorer
raised
revenues
by
2.9%
over
the
period
to
194.77
billion.
China
introduced
a
resource
tax
on
crude
oil
and
natural
gas
products
of
5%
of
sales
in
November
2011.
The
Hong
Kong-
and
New
York-listed
explorer
said
that
this
new
tax
as
well
as
other
factors
hiked
its
overall
costs
16.8%
to
US$35.73
per
barrel
of
oil
equivalent.
CNOOC
said
it
had
made
21
discoveries
and
19
successful
appraisals
over
the
year,
with
its
reserve
replacement
ratio
at
188%
for
2012.
Production
rose
3.2%
year-on-year
to
342.4
million
boe.
CNOOC
chairman
Wang
Yilin
said
that
the
explorer…
