Page 48 - Open-Hole Log Analysis and Formation Evaluation

34

Mud
Rate

Drilling

Drillpipe
Pump LL

Depth
Bit i
+——

=

FIGURE

Cuttings
2.1
Lithology
METHODS

OF
Schematic

Total
Gas
Microscope

GATHERING

Blender
\
Cl

C2
Mud
C3

FORMATION
Gas,
of Mud Logging Data
Analysis
C4
Fluoroscope
CS

Chromatographic

fr.
cut
Sst:
por.,
ang,,

and

Gas
sli.
gd.,
EVALUATION DATA
Fluor.
lithic,
Detector
intgran.
Calcimetry
arg.,

Stn.,

Lithological
Descriptions
Remarks
gd.

bu.-wh.,
Gathering and Presentation.

Chromatograph|_— |
mica,

Total
Visual
reach’
pump
gas
Calcimetry
for
several
inspection
give
Chromatographic
capacity and
hours.
concentration,
drillpipe
carbonate
to
the
Lag
analysis
indirect
pump
reaches
and
cuttings
of cuttings
from
drop
time
shale
a
RELEVANT
by
in
of gas
analysis
strokes
can
the
may
either
be
are
the
an

gamma
be
exponent,
normal
is
the
carbide
the well,
chromatographic
blender
and
pill
be
mud
analyst

or
broken
known and
combined
calculated,
Lag times
the
difficult
in
Overpressured
ultraviolet
1 include: possible of measurement The, types Nee LoL in from liberated Gas a shaker at collected Cuttings trap at the gas from the mud extracted Gag include: of data logger’s sources The mud curve. ray or SP with correlation good shows This usually (ROP). to use is the rate of penetration log, the best curve a wireline log to a mud When correlating each other.
light
the cuttings
deep wells
provided that
annular volume
the
may
bit
interpretative
take.