Page 121 - Open-Hole Log Analysis and Formation Evaluation

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aye
D2
Wor
pare
—_
Tetra gonek.
rtigorhombs

2 Gh
Ltzy?_
by
ns
698
RHOMBIC PACK
is
IN HORIZONTAL
IN HORIZONTAL
,
20,000
12,000,
thus
Chicago
surface,
volume
porosity
and
ft.
FIGURE 6.1
generally
is
is
is
fits
METHODS
45%
a
resulting
linear
Press from
compaction
most
occupied
from
and
in

/a(nd/)*
a
by
with
the
not
Graton
7’
increasing
depth
an
is
determining
depth
depth.
porosity
in
of
spheres
in
of
For
mechanics
and Fraser
efficient
feet,
is
normally pressured
a
burial
12.9%
1935.
to
at
example,
typical
if
a predictable
store
#0,
another
15,000
value
porosity
(4/3)m(nd/2)*.
ft
reservoirs—that
RESULTS
the
grains
of
of
a
is,
spheres
matter.
and
The
are
the
a
might
25.95%
8.5%
porosity
log
be
at
at

of
packed,
box;
Packing of Spheres, Reprinted by permission of the University of
porosity

aL

’
a
on
is
is
the
=
beds

_
thé
the
The
allow
If only
Initially,
THE
given
porous
through
fluid
deposited
rock type.
We
(Exceptions
of a-‘darcy:)
in
one
RAAp
tock
fluids
in-atm/cm,
direct
the reservoir rock
to
medium
fluid
flowing
millidarcy,
and
type;
continental
sediments
(continental),
OF
is
is
relationship
has
yp
in
are
flow
is
a water-free
in
thus
through
been
laid
shelves
present
deltas
between
absolute permeability—that
however,

cp,
the
measurements
in
abbreviated
ROCK/FLUID
is,
through
6)*,
and
to this rule are eolian
the
down
it
buried,
then
the
it.
rock.
is
md,
in
&
a
(marine),
If
is

environment.)
pore
precise
the
in
as
qis
permeability
rock
water,
equal
along shore
Darcy’s
Later
in
In general the log of permeability is
to
and
of representative
in
system,
may
law
hydrocarbons
darcys.
lines
either
, IN THE RESERVOIR FLUID DISTRIBUTION ne eee ey BH, area, geologic : for ‘a particular a compaction constant where ow is b = doe’ of the fracture azimuth on the depending directional highly is likely of the sort permeability ship reservoirs, In fractured permeability. manner. A relation- depth with decreases may be different permeability Also, vertical tion. Poros
cc/s,
one
for
this
property
illustrated
in
tend
from
relationship
Ais
(The
permeability
in
porosity
is
from
geologic
in
in

flow
river
ability of
the
relation
that
rock samples.
time,
and
figure
practical
to
and
takes
(transitional),
independent
rock
after
6.3.
neighboring
lake
dune sediments, which are initially
planes.
or
direc.
grains
be
horizontal
on
developed
relationships
Kozeny
linear with porosity for
dis-
A p/L
to
| the over | Figure | found only on depends one-thousandth unit cm’, of defines Ap, a through a is a .
|

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