Page 24 - Open-Hole Log Analysis and Formation Evaluation

- Secondary Water or hydrocarbons Material balance analysis Exploitation Producing from log analysis results analysis calibration log results, seismic model and Log calibration via core analysis Refinement of seismic Feedback analysis Laboratory studies Analysis Core drillstem testing testing, wireline formation profile (VSP), testing evaluation cores, vertical seismic and S
recovery
Abandonment
be
Should
and
such
covered
—_ Economic
a
logging
gas
and
tests
drilling
production
decisions
Thus,
structure
analysis
injection
sections
a
phase
may
the
have
be
measurements
will be
dealing
flood
analysis
— Production
employ
prospective
will
covered,
log
formation
as
to
effect
available
both
by
on
will
analysis,
data
efficiency analysis,
logging
will
covered
microrock property analysis
drillstem
to
first
discussion
log analysis.
vertical
testing
the
including
and/or
productive,
be

is.
A
so
of a
turn
This
wells
logs
topics
wells,
from
bined
drilled
played
tional
usually
sections
bottom
process.
Many
are
samples
rock:type
the
CORING
conserve
methods
field
on
pressure)
analyzed.
are
number
presence)
gives
of
of
a
saturations
is
Mud logging,
under
are
Press
recovered
and
side
analysis
where
correctly
the
and
drilled
of
the
log
cores are
MUD.LOGGING
More
brief summaries
however,
semicontinuous
either
its
of
before
as
presupposes
the
can
been cased. These
and
the
each
are
all
will
well,
of the
the
essential
formation
basis
is
they
that
fluid
immediate
discussion
continuously
to
the
development,
only
curves
rock
of methods.are
well.
serve
logged
an
be
nearly
parameters
where
may undergo
or
ability to
methods
may
cores
in
as
it
discussed
by
of actual
become
logged in this manner.
coring
content.
evaluation
is
use
orientation,
sample
have
forge
always
a process whereby the circulating
discussed in
indications
required after the well
to
needed
predict
The
physical
cut,
plays
the
notations
‘Other coring methods are available
of
to
cut
to
been
For
wireline
measurements
determined
as
an
The great merits of mud logging
formation
scope
detail.
a
understanding
its
introduction.
the
cut.
ahead in
drilling
rock
See
gathered.
sundry
is retrieved and brought back to surface. The
require wireline
cores
changes
from
those
unmanageable.
monitored
monitored by a variety
pressure,
the
An
in
logging
of this
interpret
on
own,
‘provides
type
Thus,
cuttings
essential
Those
by
of core
or
function
its
Development wells,

sample
surface,
in
include the
text
cut using a special core bit whereby a
mud and cuttings
sophisticated coring mechanisms are
and
tools
the
problems
the
and
accurate
the
part.
to
togis that
the
of sensors.
analysis
of the
the
familiar
analysis
but
where
awareness
only.
a wellbore.
measurements
open-hole
journey
cote
(such
of depth.
now in
indications
it
unfamiliar with
ina well
The
initial
the
of
as
are
original
has beemdrilled and before
with
for cases where additional
of
for example,
use
reader
Not
from
it
can
(which
results.
same.author,
vital
is
more elegantly referred to as hydrocarbon mud logging,
com-
dis-
being
mud-logging
the:
Wildcat
are
in
the!
relevant |
availability ona
:
| the following methods mentioned, all'of the or some here. methods evaluation ' come from the formation analysis still must inputs to any economic book, the analysis is outside Economic 1985). (IHRDC Performance Monitoring, Log Analysis and Reservoir Cased-Hole by volume to this work to a companion referred
over-
all
hydrocarbon
Conven-
that
formation
the
be
stages
analysis.
long core barrel
has
cut core plugs
rock
fluid
these
wireline
|.