Page 119 - Open-Hole Log Analysis and Formation Evaluation

is
and
are
105
The
THE
6.1)
In
allow
much
when
grains
Typical
sorting
stresses
broadly
porosity
(nd)*.
together,
is
Porosity
reservoirs.
The
saturations
of
calculated
of
rocks
fluids
packed
permeability.
porosity
in
independent
higher
GENESIS
impermeable.
hydrocarbons.
The
to
said
would
Areservoir rock
in
and
this
variables—such
chemicals
determines
sorting
grouped
to
the
is
a
permeability.
OF
be
flow
Porosity
tectonic
as
of the
produce
as
Swiss
be
objective
unit volume,’
the
one
performance
fluids
react
volume
is said
can
cubic
rock
developed
with
computed
of
grain
solution
grain
good.
content.
Porosity
in
with
following
through
also
cheese,
It
spheres
PHYSICS
of sediments as they are
sandstone
(which
any
high
RESERVOIR
it;
size.
can
porosity.
type
movement.
is
lattice
texture.
water
for
shape,
rocks
one
to be poor.
For
that has both
that
of
For
If grains
manner.
a
OF
If all
are
is,
develop
ROCKS
of
hoped
watercut
after
it
size,
develop
needed
are packed
Porosity
sedimentary
reservoirs.
as
the
sphere

storage
as
to
that
given
example,
made
is
example,
per
many
nto
porosity
they
must
saturations
while
arrangement,
rocks
is
se
,
grains
laid down. Typical
is
from
relate
Porosity
of
a
have
SYSTEMS
the
fractures
under
aside,
are
the-void
other
diverse
sorting,
would
orientation,
does
possess
log
can
ofthis
if spheres
highly
capacity and
what
produce
be
been
the
static
not
of the
sizes
and
space
both
also
(4/3)7( 4/2)’,
function
The packing the grains
induced
are
of
reservoirs
follows
porous
same
by
response
thus
porosity’can
(see
porosity
situations.
formation
just
to
reservoir
with
the ability to
water-free
develop
deposited.
intergranular
carbonate
porosity
the
but
guarantee
between
many
fig.
. reader will develop a feel for why some reservoits with low water to static reservoir the reservoir is what really counts) rather than evaluator with the information stood. of this discussion is to equip the conditions can only be made if the physics of fluid flow is under- conditions, the prediction of reservoir behavior
is
mixed
sorting—
The total volume
-
size,
be
of diameter.d
the