Page 31 - Open-Hole Log Analysis and Formation Evaluation

tion
used
tool”
in
DST
Dual
DLL .
resistivity
nominal
referred to
tool—the
anymore.
Older versions
ISF
as:
simultaneously.
curves
run
induction
induction
Tools
spacing
reference
So
laterolog
spontaneous
16
dual
The
such
a
to
in.
if a
laterolog-8
as
(induction
dual
the
SN
induction
the
recorded
deep
dual
shallow
fact
are:
medium
medium
that
laterolog
laterolog-MSFL
it
laterolog
sometimes asa DST, which
simultaneously with
Laterolog-3
is

or
(DLL)
.
stands
records
refers
tool
for
desired,
is
to
both
ask
the
Laterolog-7
spontaneous
used for the
refers
(microspherically
rather
for:
to
are
laterolog
the
focused
log).
isa combina-
confusingly
“dual simultaneous
curves
not widely

of
Az
are
The
tion
BHC
run).
sonic
There
style.
tool
(or
log.
microlog
are
recorded
The
Various
of gatings
sonic
called:
tool
for fracture
It
to
is
modern
is
'
&,)
Both
for
an
| in the family of laterolog tools important tool Sonic Tools The most Laterolog — ae Riin.x iin. Auxiliary curves caliper CAL Roin. tay GR gamma RMSFL potential SP RMLL RPL j resistivity . v focused spherically RSFL, SFL. OF resistivi npn and the curves LL8 investigati Shallow or MLL-ML normal resistivity) RSN, SN short P-ML log induction
simultaneously
curve
travel
curves
the
proximity
the
also
old
may be
or
sonic
j . mi¢rospherically resistivity from a shallow laterolog shallow laterolog resistivity from a deep laterolog laterolog EVALUATION OVERVIEW
are
make an
are:
log
time
on
log
resistivity
.
resistivity
resistivity
type
(PL)
used
a
the
the
is
recorded
microspherically
recorded
micronormal
microcaliper
— Microinverse
received
for
usually
run with
.
Devices
(Prox,
and
is:
proximity
are:
same
four microresistivity
ISF-sonic
deep
usually run with
GR,
detection. They may
known
proximity-microlog
as
separate
wave
log
focused
of electric
proximity
be
the
SP,
as
microlog
cement
Proxy)
for
together
microlaterolog-microlog
log
log
and
log
run.
survey
if
These
microlaterolog
devices
and
dual
the
trains.
microspherically
bond
the
that
focused
with
one
Sonic
microlaterolog
The
curves
a
log
a borehole
will
logs
desired.

focused
laterolog
induction
should
(MLL)
caliper logs,
The
log
(induction and
and
(CBL),
be
borehole
amplitude
comprise
probably
tools.
microlog
in
a
tools
not
microlaterolog
sonic
logs
compensated
are
are
never
or with an
all
other sonic-related parameters can also be recorded
‘services
(ML).
afé
which
in
go
run
run
sonic
microlog
familiar with:
induc-
then
out
separately.
The
in
as
recorded by various arrangements
compensated
case
usec!
or
one
either