Halliburton
told
investors
that
the
rising
price
of
guar,
an
additive
used
to
thicken
fracturing
fluid
and
help
keep
the
sand
proppant
in
suspension,
will
hit
its
margins
by
300
basis
points,
an
estimated
$120
million.
The
adjustment
came
on
top
of
Halliburton’s
earlier
guidance
that
guar
prices
would
drop
its
North
American
margins
by
200
to
250
basis
points
—
or
a
total
margin
hit
of
500
to
550
basis
points.
Guar
prices
have
moderated
in
the
last
few
weeks
but
what
likely
took
Halliburton
by
surprise
was
that
it
could
not…