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Formation
10
Factor
Liitit 100 t mee i 1000 124
A
Il.
1
the
the
they
6.18).
where
FIGURE
do
produce
7
only
mations;
constant.
proper
6.17
is
Because
and thus. at
not
PRACTICAL
METHODS
but
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the
observation
in
work
Archie’s
Variations
as
marriage
that
conductive
shal
See
: 100 10 P Tom T = 4 Intercept : Increasing m (Hard Rock) OF RESULTS OF ANALYSIS AND APPLICATION
well.
saturation
when
-
model
spectacular
a
Generalized F-to-¢
PETROPHYSICS
path, his
between
Porosity
¢
ons
formations
%
of porosity ate
results.
exponent
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considers
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formation
and
One
Relationship.
the
is
normal
is
irreducible water saturation, the
relationships
petrophysics
of
and where
(Clastics)
the
above
and
work
usually
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product
electrolyte
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scale,
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analysis
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line.
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water
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figure
THE
FIGURE
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of
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60%,
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analyzed
are
saturation
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6.18
zone.
a
in
6.19,
production
formations.
overlooked
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on
surprisingly
maintaining
qT
Reservoirs
X S,,
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permeability,
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PHYSICS
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knowledge
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practical
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illustrates
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the
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characterized
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once
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have
This
of the
irreducible
the
Figure
plot
fluids
low-porosity,
can
environment at
linear scales
by
Of Ro/R, and
basis
to
irreducible
n.
pore
product.
more
be
water
6.20
taught
the
and
the
for
the
porosity
presence
salient
application.
can
@
depending
and owing to subsequent diagenesis.
(1)
moderate
or
Either way,
present.
saturation
irreducible
and
formations with
right
X
If,
I
throats
on
fact
0.1
shows
be
the
After
troubles
time the
a
°
tolerated
a
is
phenomenon.
for
are
the
S,,;
the points
if S,,is
values
water
good
a
Figure
held
predicting
of the
and
at
absence
all
mean
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less
in
zone
Note
of
similar
small
(2)
6.21
a
without
saturation,
too
S,,,
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the
product,
than
do
radius
plot
number
ones
fear
saturation,
often
not
on
saturation plot ona straight
irreducible
transi-
that,.on
irreducible
production
mobility ratio
some
low-permeability formation,
shows
and
been
water
ris
pore
50%
porosity and
sediments were
a
or
locally, porosity is
of
4
1
of