Page 199 - Open-Hole Log Analysis and Formation Evaluation

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7.
b.
a.
me
The
9.18
ue
from
Find
FIGURE
Reo! Rm
SP
use
the
required
Compute
ay
=
QUESTION
permission
9.17
of
shows
SP:
by what
the
50

#9.8
deflects
one
Cox
Factors
of
25

of the SEG.
percent
(dj, Ryo/Rm,
and
potassium
corrected
d; =
the
mV
the
and

SP
Affecting
4)
more
value
Raymer
and 30 in,
from
has
chloride
SP
are
for
the

MANDREL
the
(1976)
been
Rm

tt

practical
muds
SP.
usually
base
Reduction,
cover
line
charts.
affects
7
reduced.
known
_
this
in

After
the
or
a

Most of
subject
sand
the
in
4

Segesman
ft
guessable.
derivation
SP
of
1962.
detail.

Ry
variables
thick.
A
by

| ELECTRODE

“ 80 90 ,inches LOGGING MEASUREMENTS Ill. OPEN-HOLE “184
u
3°
185
a
o
70
60
40
50
30
20
70

50
3%
-in.
40
9.
8-in.
30
ly
TOOL
the
The
tion
THE
THE
quick
‘FIGURE
SP
filtrate.
SP.
Services.
as
SP
HOLE
observed
a
9.18
AS
different
20
of thumb is
LOG
SP
This

A
formation. If
SP
presence
to

for
solution
NaCl
BED
fact
,CENTERED
|
IS
to
add

KC]
SHALE
mud
SP. sand_4S
the
30%
feet
deflection,
can be
of shale in
to
the
KCl
filtrates
case.
an
the
used.
1098
Correction for Bed
than
THICKNESS
mud
The
value
subtract
in
7
INDICATOR
for
25
R,,,
6
otherwise
mV,
to
measured
NaCl
Thickness.
5
observed
clean
R,,,;
and
estimating
Rf.
in
perturbation
4
a
is
and
the
filtrates.
then
Courtesy
3
sand will
clean,
treat
shale
Again,
simply
proceed
a
the
relationship
tend
to
as
to
is
for
,
5
content
quick
Schlumberger
take
35
3.0
25
5.0
4.0
oO
oa
of
F
5
2
i
>
28
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w
Well
the

computa-
slight-
reduce
a
NaCl
rule
water-bearing