Instead,
the
energy
company
will
spin
off
the
upstream
segment
as
a
separate
public
company
called
WPX
Energy
and
owned
by
Williams
shareholders,
Dow
Jones
reported.
The
Tulsa,
Oklahoma,
company
had
planned
originally
to
launch
the
IPO
by
the
end
of
2011,
but
wild
gyrations
in
the
stock
market
have
made
a
valuation
difficult
to
gauge.
The
spun-off
exploration
and
production
company
will
be
created
by
year's
end,
chief
executive
Alan
Armstrong
said
in
a
statement.
"The
continued
instability
and
weakness
in
equity
markets,
especially
for
new
issuances,
makes
the
IPO
of
WPX
Energy…