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Quick look log analysis
Poster · September 2021
DOI: 10.13140/RG.2.2.22441.52321
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1 author:
Behrooz Esrafili-Dizaji
University of Tehran
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Some of the authors of this publication are also working on these related projects:
Geological reservoir study of the Permian to Miocene reservoirs in the Zagros area and the Persian Gulf View project
Sequence stratigraphy and reservoir characterization in the Mozduran and Shurijeh formations, Kopet Dagh Basin, NE Iran View project
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Quick Look Log Interpretation
Designed by: B. Esrafili-Dizaji
On gauge
Mud Cake
On gauge
GOC
Mud Cake
OWC
Water
Phi
6.5 Chlorite
Illite
1.70
2.49 (g/cm3 )
Variable
with
grain
size
1.68
variable
with salt
1.66
Organic matter
On gauge
Fresh water 0.36
Salt water
0.81
variable
with
salt &
temp.
Solution with mud
Anhydrite
On gauge
5
High in K salt
4.65
5.06
Caving
Effect
OWC
ɸ
Gas
Effect
Cycle
Skipping
variable
with API
Phi=20%
Barine & KCL mud
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Salt water
Hydrocarbone
50-1000
Ω.m
OWC
variable
with
salt &
temp.
Brine
<1 Ω.m
140 µs/ft
Barite off scale
266.8
25%
60 µs/ft
2.8
1.2-1.5 (g/cm3 )
2.03 (g/cm3 )
off scale
-3%
100-140 µs/ft
66.7 µs/ft
50 µs/ft
-1% 2.95
2.4 (g/cm3 )
Caving Effect
Caving Effect
2.4
Increasing with
Salt water
Tight
Dolomite
42.5 µs/ft
80 µs/ft
W 16%
variable with
water content
75%
with Siderite
up to 6-8
Caving Effect
(Washout)
Oil
2000
Tight
Limestone
47.5 µs/ft
variable
with
H2 index
2 (g/cm3 )
>200 API
U/hot
/black
shale
0.18
Coal
Salt
GOC
2000
Fresh water
ɸ
Gas
Effect
0.2
LLD
LLS
52-55
µs/ft
variable
with
compaction
2.68
Gas
variable
with API
Oil 0.12
variable with water content
& compaction
10%
18%
variable
with
Pressure
40
ɸ
0%
1%
1.70
(Microsecends/ft)
6.5%
2.54 (g/cm3 )
3.05
Phi
-2%
2.71(g/cm3 )
3.14
0.2
130-175 µs/ft
variable with
water content
2.65 (g/cm3 )
(Ω.m)
Sonic
3 140
2.71
2.4 (g/cm3 )
37%
1.80
4.90 Phi
High with
Shale
Shale
(g/cm )
3
Poorly
compacted
Compact
3.5
2
5.08
gS
Oil
High with
Heavy mineral
Glauconite
Feldespar
Mica
Mud Cake
Gas
shales
6
Density
3
Resistivity
-15
2.87
Mud Cake
marine
continental
shales
Lo
Porous, ɸ>20%
Dolomite
On gauge
200 0
0
(%)
2.32
ɸ= 10% ɸ= 0%
Limestone
ɸ= 10% ɸ= 0%
Sandstone
ɸ= 10% ɸ= 0%
(smectites &
mixed-layer
illites)
0
(barns/electron)
Kaolinite
16
Shale Baseline
(in)
(API)
Neutron
45
PEF
Gamma Ray
Swelling Shale
Shale
Sandstone
CAL
16
pe
6
(in)
ha
Lithology
Bit Size
Sandstone Baseline
6
NPhi Increasing with
increase porosity (shale)
Increasing with
increase porosity (shale)
>10000 Ω.m
off scale
>1000 Ω.m