Page 154 - Open-Hole Log Analysis and Formation Evaluation

be
In
Ry
Sp
7.4.
Read
Read
Read
| Rock Matrix yN Porosity Il. METHODS 140
=
value
Read
=
which
FIGURE
Assume
chapter
&
R,
The
Ry
porosity
cases
Calculate
recourse
for
@p F
Solution
7.6
Compute
at
6,
QUESTION
can
formation
in
QUESTION
at
in
FX
is
Ry
Ro/F
in =
R,,.
of
S,,.
we
be
combined
the
=
#7.4
the
the

#7,3
can
where
5297
5420
to
factor,
made
this
oil/water
ft.
be
ft.
Ry
R,/R,.
used
wet
have
to
same
find
Definitions
to
and
interval
a
0.62/¢7",
Rob”/a,
read
zone
of.
' Water Oil Gas OF ANALYSIS AND
contact
R,,,
find
cannot
in
value
can
equation
Archie’s
from
interval.
be
the
be
Porosity
this
the
| APPLICATION
5390-5400
R,, from
read
for R,.
and
ft.
read
well
in
dual
equation
the
requires
connate
is
a
at
from
logs

wet
water
the
written
5384
laterolog
in
ft.
zone
4
shown
: 4
y
{
4
I
wv
So
Sg
and
knowledge
the
in
of
Water Saturation.
density

of
resistivity.
| OF RESULTS 141
log.
form
equal
a value

figures
Below this
both
Again
F,
7.3
These
(¢,)

level,

for
from
a
and
can

porosity,

the

.
A
of
%
3.0
8
8
06
1.0
*
20
3
04
08
2
7
, 05
5
008
ge
™
to
use
Use
Read
Read
berger
FIGURE
find
R,,
R,
Convert
With R,
through
this
Auseful
the
Compute
7.7
=
QUESTION
at
¢
S,,.
this
S,,
to
chart
chart
0.18
at
#7.5
to
5350
defined,
Thus,
for
0
porosity
ft.
an
find
Well Services.
at
5350
+
4 1 +4 +5 T° a Fr= pet 0.62 4-8 | 5 v1 35-46 8 wot? 25 T } 20 -$ 20 +2 30 15 40 | +3 60 Tt 10 + 89 +4 100 + 5 +5 +6 7 200 6 90 4 5 + 400 tT, TY 600 ‘ 4 so T { 3 2.5 -F 2000 & FR 4 ¢ 7° Q-m Fo OF 7, BASIC CONCEPTS
4
r
4
Ry.
+
T
: a 5350 ft. equation Saturation os 2 Tt? LOG ANALYSIS
ft.
(known
water
+3
t*
m?/m.
Nomogram for
Fo=FrRw
Archie’s
Fusing
as
Then
a
=
solving Archie’s
draw
saturation
a
0.62,
can
m
may
nomogram),
=
equation
be
; 8 : : ; 4 6 x 10 20 ° 40 80 80 100 200 300 400 600 yo 1,000 2,000 3,000 4,000 8.000 8,000 10,000 Q-m RA:
second
a
4
2
is
draw
2.15.
line
a
Determination.
solved.
shown
be.calculated
frorn
: 47 tL 5 +5 % Sw
first
in
Rp
ona
line
Courtesy
Sn
figure
=f

|
T
+
+1
7T8
,
sto
712
+ 70
tis
+ 16
ta
a0
20
+60
+50
+ 80
+ 90
25
from
+100
7.7.
through
Ry
Po
Schlun-
To
point-by-

FR;

R,,