Page 53 - Open-Hole Log Analysis and Formation Evaluation

in
gd
Ls:
the
can
For
may
can
that
(by
The
used
rate.
stain,
Rock
a
every
Since
Color
cut
be
Fossils
be
ool,
to
do
2
hard
Porosity
Cement
"WRITTEN
Appendix
to
That
Chemical
ft.
limestone,
good
and
brachiopod
fixed
cuttings
depth)
Grst,
Fluor
and
is,
Sedimentary
by
2B
rock
it takes
example:
Approximate
HYDROCARBON
presence
cut
keep
and/or
oil
to
detected
describe
brn,
translated
after
one
order
oolitic,
with
of the
if the
up
makeup
by
about
to
a
Texture—including
is
or
is
a
bryozoa,
this
DESCRIPTION.
15
rocks
matrix
shows
porosity,
to
structures
their
accessories
type—underlined
in
used
med-crs,
grain
mean:
drilling
length
reported
and
drilling
fluorescence.
this
chapter
number
DETERMINATION.
arg,
report
grainstone,
rate
thus:
size,
of
of hydrocarbons
A written
journey
materials
If
rate
is
lithology,
glauconitic,
lists
up
results
of
100
all
8
and
brown,
followed
samples
good
will
geological
Brach-Bry,
by
minutes to process
the
ft/hr
roundness,
be
ft/hr,
column
description
through
every
of techniques.
a
texture
the
glauc,
and
medium
25
hydrocarbons
the
and
regular
ft
gd
best
These
are
(4
follows
interparticle
samples
a
mud
function
telegraphese.
classification
coarse,
each sample,
sorting
that
basis
.
per
abbreviations
still
can
a
set
the
be
include:
of
exiting
+
mud
porosity,
hour).
column
present
rules
may
order
in
they
intpar, por, gd Stn,
commonly
good
argillaceous,
Thus,
so
logger
be
of the drilling
frequency
handled
to

at
45
25
35
15
"to
the
Oil
less
acid
Gas
with
The
Ifno
to
to
more
When
reagent
35
to.45
If either
method
25
tinguish
analysis
qualifier
than
which
is
correlates
or.over
calcimeter
Suggested
reacts
it
in
API Gravity
CALCIMETRY.
15
the
for example)
slowly
wetness
(see
seen
character
is
reading
low density
EVALUATION
formation.
when
a
ways
with
added.
solvent-extracted
diagnostics
than
ratio
order
fluorescence
OF
limestone
carbonates—a
to
Light-to-heavy-ratio
well with
relative
is
the
measures
to
mud
These
the
This
Haworth
qualifier
bleeding
A weighed
liberated.
white
Color
is
cream
et
log
brown
orange
excessive
(GWR)
are:
(high API)
seen
rock
both
(LHR)
SHOWS
it
reported
al.
or
the API
reaction
(CaCOs)
is
to
on
blue-white
combine
the
Since
(OCQ)
reaction
hydrocarbon
or
sample
to
are
distinguish
usually
that
is
the
fingerprint
the
1984)
a
the
form
methane
yellow
as
=
of use
=
=
concentrations
with
is
: the color seen). influenice determine: light, these hydrocarbons will fluoresce (the API gravity of the in a inspected on are visually Cuttings the from be may Visual Inspection odor.” In ordinary light, the cuttings may have a odor” an “oil can nose A trained , component. of each reagents to chemical the sample
contact with a standard volume of HCI
the
violet
to
volume
rock
forms
of Fluorescence
hydrocarbons.
dolomite
gravity—that
referred
solvent
of cuttings
true
carbon
reaction
the
suggests
shown.
untreated
readings
to
of these
is,
The
present.
of CO>
a
be able
as
in
limestone,
(a few cc)
(CaMg
with
basis
that brings out any hydrocarbon still
to
using
it
fragments.
from
OCQ
in
high
cut
dioxide
sample
(usually
is
for
C2+ AGLT,
table
1
COs)
formation
(C4+05)/C3
three
(C1+C2)/(C3
liberated
gas
is
LHR
ratio
g)
carbonates
(chlorothene
then
Other
+
2.1.
estimate
is
is
a
in
inaclosed
dolomite
or
and
a
| | po ultraviolet Under visible oil stain a from
ratios
C4
possible
content.
the sample.
(CO2).
The
productivity in a semiquantitative manner. Anumber of authors
calcimetry.
the
to
to
present,
of use
placed
as
chemicals
used include hydrochloric acid, which will cause bubbling on contact
chemical
acetone,
in
chamber.
+05)
“condensate
proceeds
sample.
One
type
oi! will
have
formation
chromatographic
cotresponds
a
LHR
— dis- rate The the Such _ or oil