Page 100 - Open-Hole Log Analysis and Formation Evaluation

All
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full
The
and
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Logs
their
hole
kind
offer
Logs
DDL
Logs
price
of the
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based
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logs
of
cost
running
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probably
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Features
formation
systems.
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are
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structurally.
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Calibrations
However,
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should
survey
performed
In contrast to
charge
service
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to.
setup
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be
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advantages
are
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be
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proposition
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depth of the
COMPUTERIZED
one’s
mutually
of
following
Once casing
logging
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directly
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lost
WHEN
charge
ofa logging
units.
be
Systems Available
Computer
on
been
charge
recorded
is
while
TO
just
Digital
is
expensive.
assessed
is set,
using
Service
run
The
companies
a
tool),
Logging
conventional
if
performed
quickly
features:
and fee structures.
per
depth.
if
while
(caving,
recorded
LOG
LOGGING
Unit
encouraged.
prior
Logging
enthusiasm
operation
these
well. To log a
assessed
hole
and
to
on
is,
foot
Logging
for
assessed
Service
available
under
4000-ft
now offer
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UNITS
to
over
logging
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cuttings
digital
somewhat by the economic and practical
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or
of hole
the
up
survey
running
of Computer-Based Logging
systems
(Welex)
cover
if
accurately
conditions
logging systems,
logging
more than
or
(Gearhart)
at
running
etc.,
from
(Schlumberger)
indicate
logs
actual
are:
100-ft section at
(Dresser)
computer-based
programmed
.
than
costs
one
magnetic
and
5000
the choices for logging are
suggest
is
that
services
of
Systems
logging
anything
which
units
ft
surface
with
tape.
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Each time a logging truck is
an
interval
that
control
to
setting
are
from
a
else,
be
10,000 ft is
total
of
would
and

an
a
total
evaluate
called,
otherwise
many,
logged.
with
can
section
depth
mobilization;
: correlation work. pressure zones, and for general and carbon-bearing zones in the area, to locate determine prospects for new hydro- zones for recompletion, to FORMATION EVALUATION DATA 86 I. METHODS OF GATHERING
be
all
conventional
computer-based systems
a
realities of service-company
casing
some
and
lost
tempered
unexpected
computer-
negate
is
depth;
severely limited.
high
a function
expen-
The
of
down,

_ Logs can be played back from Well Services. Schlumberger Components 5.14. FIGURE DOWNHOLE FROM SIGNALS COMPUTER ELECTRONIC GENERAL PROGRAM LOGGING 5. WIRELINE 87
logging
Wellsite
(both
Figure
command,
as
complete
5.14
integration
depth
the
log
engineer
for
computations
and
computation
calibration.

analysis.

range
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computer
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will
functions
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with
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the
data
the
volumes)
scales).
load

data
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to
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tapes
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completion
on
: Lo ing of a Computerized / PRINTER KEYBOARD LOGS OPTICAL MONITOR VIDEO TAPE DATA TAPE OPERATIONS
Programs
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mee
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andated
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9
commonly:..available.
perform
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keyboard.
isa schematic ofa computer-based logging system.
computations
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The
ieee
and
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scales
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