Page 158 - Open-Hole Log Analysis and Formation Evaluation

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_ by reference good But “X Subdivide QUESTION feet Find QUESTION produce produce, laterolog figure dey, dVet pay -the preview Chapter PAY II. 144
In
be
the
For
this
total
only
HICPV
HCPV
a
studies,
will
volume;
Porosity
=
rock
taken
or
isa
discussed.
chapter
be
oil-in-place
correlations
$
feet
to
6,
bad
net
and
hydrocarbon
example,
into
7.8
has
reservoir
the
fraction
X
| so of oil and feet the #7.7 S,, is too high. water because at there are sections and low-porosity There are hydrocarbon. not However, depths). pay 7.3 in feet. For is measured calculated amount of hydrocarbon the various here concerning calculations 8 COUNTING OF ANALYSIS AND APPLICATION METHODS
a
Two
define
of
a
PERMEABILITY
seismic
Oil-in-place is
the
the
volume
pay
hydrocarbons.
of
(1
(OIP)
pore
each
covers
is
the
covered
in
35%
-
pay”
the
between
For
in
gross
account
in
net-pay
volume
is
units
foot
many
dimensionless
methods
defined
is
records,
S,).
is.
hydrocarbon
the
of
the
question
volume
into
each
not
as
for
reserve
porous
feet
It
when
occupied
oil
porosity
is
were
the
pore
foot
next
the
very
by
known
hydrocarbon
oil-in-place
section
and
and
of gas.
mapping,
of 0.35(1
reservoir
is
oil.
(as
fraction, the
pore
=
is
oil-in-place
formation
speaking
gas
from
fraction
chapter.
example
volumes.
at
necessary
etc.),
This
of
described.
of permeability
will
units
is
0.15)
given
15%
a
irreducible
be
ft
then
One
=
delineated
by
recoverable,

of OIP
the
by
detail.
water
useful
estimates
down
water
HCPV
recoverable
rested
are
streaks
other
HCPV.
to
X
We
total
logs;
on
X.
0.3—that
from
feet.
_ (HCPV) by volume and a a water saturation of formation rock volume occupied of the with “net pay” to quantify know how unless you informative pay. well. - the interval that will the base of will not shale section will produce all of this 5384 5280 in the well logged example, from logs. is, ways to quantify pay—that will in 145
that
is,
feet.
number.
saturation
factors
ft
reserves,
logs
saturation
volume
30%
has
take
empirical
and
was
(Si,
Because

must
If the
reservoir
Since
geological
of
a
of
(dual
a

of a
the
later, iN
Making
Reading
Applying
included:
Definition
will
evaluation
Estimating
Recognizing
Refinements
figures
example
sums
Schlumberger:
of a
not
7.3
resistivity
from
on
BIBLIOGRAPHY
Archie’s
in
“Log
log
of pay
of porous
logs.
these
any
of
porosity values
permeability
few basic
7.4.
and
the
figures
way
from
thickness
a
relationships
Interpretation
hydrocarbon-/and
alter
in
oil
density
and
permeable
Charts”
this
sand
porosity
clean-formation
order
quality
to
zones
og
estimate
basic
(1984).
water-bearing
the
find
. raw logs through to quantitative pay counts. The Application principles enables SUMMARY permeability, assuming difference (Pin in O-m/ft for the transition zone and then estimate the On dual laterolog figure 7.3, the UESTION 7.11 logs of 7.3 and Estimate the permeability of the gas sand at §296 ft UESTION #7.10 . logs of figu
ft
procedures,
zones
oe _. on the example on example can be applie the resistivity
method
analyst
R,, and
Pay)
to
by
to
the
of
is
steps
S,,
be
0.2
work
resistivity gradient
formation
g/cc.
involved
inspection
studied
formation
from.
we