Of
this
amount,
proven
reserves
of
oil
and
condensate
have
been
estimated
at
18.4
billion
boe
and
30
trillion
cubic
feet
of
natural
gas.
The
company’s
gas
reserves
have
more
than
doubled
compared
with
the
level
registered
at
the
end
of
2010.
This
was
due
to
a
review
of
reserves
at
its
largest
gas
field,
Kharampurskoye,
in
West
Siberia.
Oil
reserves
have
also
increased,
reflecting
the
quality
of
assets
which
Rosneft
gained
control
of
following
the
purchase
of
assets
of
defunct
oil
company
Yukos
in
2007
in
liquidation
auctions.
Rosneft’s
auditors
have…