Page 187 - Open-Hole Log Analysis and Formation Evaluation

oi
=
SP.=
=
13
=
“t
-K
preferred.

~Klog
log
gc
solutions.
x aD
075Ry
Al
a}
equation

However,
|e
(Ay/Amp),
8
a Q
ob
ct
h
f
even
—-
ep,
Rye
after
=
values
Per
for
SP,
K,

|
yy
controlled
filtrate
is
Pore
—— read should SP equation Thus, the solutions filtrate and mud water formation of the activity relative the by is of SP development actual The salt of behavior true electrochemical the adequately explain does not (Ry/fy) SP ‘ 5s tm The out. to be sm i minor wrinkle S sti some are e still there determined, ; have been Rng and mud of on a sam ple measurement cases,
ee 7 oy prormentiegs nS
a khan 0:0 173 9,
.08
.06
.05
03
.02
Ot Ol
D
(Ib
02
IG
t /gal)
'
.03
T

SP
.04
THE
mud
(R,,)
=
FIGURE
where
"The
SP
strictly
.06
to
9.9
inversely
A,,
-K
reciprocal

LOG

conversion
centrations
Well Services.
filtrate,
compensate
A
Rmf
an
log
and
Schlumberger
accurate
for
or
resistivity
chart
there
A,,,;
resistivities (R,,.)
is
is
actual
Estimation
this
of
2
(1972).
a
proportional
are
Rmo
a
for
of its activity
formula
Rinje/ Reve):
respectively.
to
then
at
(the
The
Of Ry
salt
the
SP
marked
low
used
resistivity
departure
solution
to
is
3456
salt
———>
is
activities
to
go
8
(R,).
activities
equation
of
1
solutions,
and Ry- from
departure
For
/
from
the
can
(R,,
Ry.
roughly
an.
=
which
from
2
67181
further
concentrations,
then be
this
are,
connate
3
(
Courtesy
but
by
4
0.075/A,

at
rule.
equivalent
details
water
at
proportional
A
ib scat)
56
rewritten
high
to
and
to
8
way
refer
Schlumberger
con-
the
the
definition,

.to
10
T7T°F).A
resistivity
the
to
define effective or_equivalent