Page 151 - Open-Hole Log Analysis and Formation Evaluation

136
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as
in
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of
sity
and
The
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and
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way
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figure
The
space
pores
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to
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weighs
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section
of
gamma
Provided
the
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sample)
sample?
rock
figure
effective
example
saturated
particles,
7.4
logs
are
(neutron)
sample
do
QUESTION
shale
be
is
7.3
the
tay
is
POROSITY
but
215.5
7.3
in
METHODS
the
porosity
185.5
of
log.
silt,
to
total porosity
and
is
this
divided
density
may
#7.1
porosity
with
g.
or
definition
g.
interconnected.
density
is
of
such
by
exercise
be
curve.
a
laboratory,
If
(¢7)
measurement
known,
porosity.
a
shows
7.4
containing
etc.),
With
to
of
of
in
figures
simplest
sections.
density
as
heutron-density-GR
After
the
.
of very
a
porous
interconnected pores
to
water,
trace.
the
the
are
is
the
This
logging
delineate
7.3
that,
all
log
effective
colot
Pores
log.
interconnected
to
ignored.
dual
if
porosity
The
of the
a yellow
the
then
show
reservoir
or
porosity
the
tool
and
formation
recording:
water
volume
divided
that
density
from
Intergranular
should
can
Attention
porosity
the
is
is
not.
sandstone
weigh
by
the volume
rock
7.4
of
1
For
analysis,
rock.
the
ineffective.
solid
are
be
a
can
water
give
porosity
of the
porous
can
it
remove
the
are
ignores
properly
a
the
the
clean
is
be
provides
is
Swiss
of the
g/cc,
all
highlighter,
matrix
defined
porosity
and
Thus,
rock
the
(¢,)
middle
curve
laterolog-GR.
then
time
sample
saturated
good
as
froth
OF ANALYSIS AND APPLICATION
(or
blocked
the
low permeability since
volume
a
as
in
pores
what
measured
that
of
be
an‘in
mark
in
cheese,
OF
and
the
rescaled,
removed
the
is
sandstone
in
with
is
the
up
visual
being,
calculated.
suggested
(shale-free)
the
a
for
situ
rock
of Track
water
question
a preferred
the
permeable
containing
of rock
can
1
the
from
divided
the
some
void
,
Tracks
figure
that
of
water
RESULTS
matrix
and
volume
2
volume
the
image
be
zones.
when
sand-shale
(see
is
the
is
7.4
the
way
number
of
A
of
it
volume
example,
concentrated
spaces
gamma
sections
porosity
dashed
fig.
pore
and
is
bulk-rock
is
definition
the
2.65
the
of the
(by
first
of
in
of
3
whether
are
on
leftward to
ray
reweigh
found
interconnected
sample
shows
7.5),
curve
den-
displayed

it.
not
to
rock
log
quite
the
space.
it
g/cc
is
of ways.
100%
by the volume
the
gives
the
sand
pore
sequence.
clay
the
the
a
the
practical
step
in.

137
7.
FIGURE
GR
7.3
(APD
(INCHES)
CAL-DLL
A
BASIC CONCEPTS
OF
(FEET)
DEPTH
LOG ANALYSIS
Dual Laterolog Resistivity Log.
LLS.
LLO
MSFI
1OHFIS)
1OKIAS)
(OHHS)