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SEISMIC PETROPHYSICS Rock Physics ModelingPrediction away from wells
Seismic Rock Physics, LLC.
COURSES
0 5 10 15
5200
5220
5240
5260
5280
5300
5320
5340
5360
5380
Ip and Is
0 0.5 1
5200
5220
5240
5260
5280
5300
5320
5340
5360
5380
Volume
Depth (ft)
Brine Gas Quartz Limestone Clay
0.1 0.3 0.53
6
9
12
15
PR
Ip (
km
/s g
/cc)
0.1 0.3 0.50
4
8
PR
Is (
km
/s g
/cc)
5200
5250
5300
5350
1.7 2.2 2.7
5
10
15
Rhob (g/cc)
Ip (
km
/s g
/cc)
0 10 20 30 40
Angle
Gather In Situ
0 10 20 30 40
Angle
Gather Oil
0 10 20 30 40
Angle
Gather Brine
-0.4 0.1 0.6-0.8
0
0.8
Intercept
Gra
die
nt
0 10 20 30 40-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
Angle
Rp
p
Reflectivity
In Situ
+8% Clay
+16% Clay
-0.4Clay
-0.4Clay + 0.4Quartz
Top ReservoirDepth (m)
0 5 10 15
5200
5220
5240
5260
5280
5300
5320
5340
5360
5380
Ip and Is
0 0.5 1
5200
5220
5240
5260
5280
5300
5320
5340
5360
5380
Volume
Depth (ft)
Brine Gas Quartz Limestone Clay
0.1 0.3 0.53
6
9
12
15
PR
Ip
(km
/s g
/cc)
0.1 0.3 0.50
4
8
PR
Is (km
/s g
/cc)
5200
5250
5300
5350
1.7 2.2 2.7
5
10
15
Rhob (g/cc)
Ip
(km
/s g
/cc)
0 10 20 30 40
Angle
Gather In Situ
0 10 20 30 40
Angle
Gather Oil
0 10 20 30 40
Angle
Gather Brine
-0.4 0.1 0.6-0.8
0
0.8
Intercept
Gra
die
nt
0 10 20 30 40-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
Angle
Rp
p
Reflectivity
In Situ
+8% Clay
+16% Clay
-0.4Clay
-0.4Clay + 0.4Quartz
Top ReservoirDepth (m)
0 5 10 15
5200
5220
5240
5260
5280
5300
5320
5340
5360
5380
Ip and Is
0 0.5 1
5200
5220
5240
5260
5280
5300
5320
5340
5360
5380
Volume
Depth (ft)
Brine Gas Quartz Limestone Clay
0.1 0.3 0.53
6
9
12
15
PR
Ip (
km
/s g
/cc)
0.1 0.3 0.50
4
8
PR
Is (
km
/s g
/cc)
5200
5250
5300
5350
1.7 2.2 2.7
5
10
15
Rhob (g/cc)
Ip (
km
/s g
/cc)
0 10 20 30 40
Angle
Gather In Situ
0 10 20 30 40
Angle
Gather Oil
0 10 20 30 40
Angle
Gather Brine
-0.4 0.1 0.6-0.8
0
0.8
Intercept
Gra
die
nt
0 10 20 30 40-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
Angle
Rp
p
Reflectivity
In Situ
+8% Clay
+16% Clay
-0.4Clay
-0.4Clay + 0.4Quartz
Top ReservoirDepth (m)
0 5 10 15
5200
5220
5240
5260
5280
5300
5320
5340
5360
5380
Ip and Is
0 0.5 1
5200
5220
5240
5260
5280
5300
5320
5340
5360
5380
VolumeD
epth (ft)
Brine Gas Quartz Limestone Clay
0.1 0.3 0.53
6
9
12
15
PR
Ip (
km
/s g
/cc)
0.1 0.3 0.50
4
8
PR
Is (
km
/s g
/cc)
5200
5250
5300
5350
1.7 2.2 2.7
5
10
15
Rhob (g/cc)
Ip (
km
/s g
/cc)
0 10 20 30 40
Angle
Gather In Situ
0 10 20 30 40
Angle
Gather Oil
0 10 20 30 40
Angle
Gather Brine
-0.4 0.1 0.6-0.8
0
0.8
Intercept
Gra
die
nt
0 10 20 30 40-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
Angle
Rp
p
Reflectivity
In Situ
+8% Clay
+16% Clay
-0.4Clay
-0.4Clay + 0.4Quartz
Top ReservoirDepth (m)
SBAL-EPS Gathers ALIGN GathersSBAL-EPS Gathers ALIGN Gathers
0 5 10 15
5200
5220
5240
5260
5280
5300
5320
5340
5360
5380
Ip and Is
0 0.5 1
5200
5220
5240
5260
5280
5300
5320
5340
5360
5380
Volume
Depth
(ft)
Brine Gas Quartz Limestone Clay
0.1 0.3 0.53
6
9
12
15
PR
Ip (
km
/s g
/cc)
0.1 0.3 0.50
4
8
PR
Is (
km
/s g
/cc)
5200
5250
5300
5350
1.7 2.2 2.7
5
10
15
Rhob (g/cc)
Ip (
km
/s g
/cc)
0 10 20 30 40
Angle
Gather In Situ
0 10 20 30 40
Angle
Gather Oil
0 10 20 30 40
Angle
Gather Brine
-0.4 0.1 0.6-0.8
0
0.8
InterceptG
rad
ien
t
0 10 20 30 40-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
Angle
Rp
p
Reflectivity
In Situ
+8% Clay
+16% Clay
-0.4Clay
-0.4Clay + 0.4Quartz
Top ReservoirDepth (m)
0 5 10 15
5200
5220
5240
5260
5280
5300
5320
5340
5360
5380
Ip and Is
0 0.5 1
5200
5220
5240
5260
5280
5300
5320
5340
5360
5380
VolumeD
epth
(ft)
Brine Gas Quartz Limestone Clay
0.1 0.3 0.53
6
9
12
15
PR
Ip (
km
/s g
/cc)
0.1 0.3 0.50
4
8
PR
Is (
km
/s g
/cc)
5200
5250
5300
5350
1.7 2.2 2.7
5
10
15
Rhob (g/cc)
Ip (
km
/s g
/cc)
0 10 20 30 40
Angle
Gather In Situ
0 10 20 30 40
Angle
Gather Oil
0 10 20 30 40
Angle
Gather Brine
-0.4 0.1 0.6-0.8
0
0.8
Intercept
Gra
die
nt
0 10 20 30 40-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
Angle
Rp
p
Reflectivity
In Situ
+8% Clay
+16% Clay
-0.4Clay
-0.4Clay + 0.4Quartz
Top ReservoirDepth (m)
0 5 10 15
5200
5220
5240
5260
5280
5300
5320
5340
5360
5380
Ip and Is
0 0.5 1
5200
5220
5240
5260
5280
5300
5320
5340
5360
5380
Volume
Depth
(ft)
Brine Gas Quartz Limestone Clay
0.1 0.3 0.53
6
9
12
15
PR
Ip (
km
/s g
/cc)
0.1 0.3 0.50
4
8
PR
Is (
km
/s g
/cc)
5200
5250
5300
5350
1.7 2.2 2.7
5
10
15
Rhob (g/cc)
Ip (
km
/s g
/cc)
0 10 20 30 40
Angle
Gather In Situ
0 10 20 30 40
Angle
Gather Oil
0 10 20 30 40
Angle
Gather Brine
-0.4 0.1 0.6-0.8
0
0.8
Intercept
Gra
die
nt
0 10 20 30 40-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
Angle
Rp
p
Reflectivity
In Situ
+8% Clay
+16% Clay
-0.4Clay
-0.4Clay + 0.4Quartz
Top ReservoirDepth (m)
0 5 10 15
5200
5220
5240
5260
5280
5300
5320
5340
5360
5380
Ip and Is
0 0.5 1
5200
5220
5240
5260
5280
5300
5320
5340
5360
5380
Volume
Depth
(ft)
Brine Gas Quartz Limestone Clay
0.1 0.3 0.53
6
9
12
15
PR
Ip (
km
/s g
/cc)
0.1 0.3 0.50
4
8
PR
Is (
km
/s g
/cc)
5200
5250
5300
5350
1.7 2.2 2.7
5
10
15
Rhob (g/cc)
Ip (
km
/s g
/cc)
0 10 20 30 40
Angle
Gather In Situ
0 10 20 30 40
Angle
Gather Oil
0 10 20 30 40
Angle
Gather Brine
-0.4 0.1 0.6-0.8
0
0.8
Intercept
Gra
die
nt
0 10 20 30 40-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
Angle
Rp
p
Reflectivity
In Situ
+8% Clay
+16% Clay
-0.4Clay
-0.4Clay + 0.4Quartz
Top ReservoirDepth (m)
SBAL-EPS Gathers ALIGN GathersSBAL-EPS Gathers ALIGN Gathers
0 5 10 15
5200
5220
5240
5260
5280
5300
5320
5340
5360
5380
Ip and Is
0 0.5 1
5200
5220
5240
5260
5280
5300
5320
5340
5360
5380
Volume
Depth
(ft)
Brine Gas Quartz Limestone Clay
0.1 0.3 0.53
6
9
12
15
PR
Ip (
km
/s g
/cc)
0.1 0.3 0.50
4
8
PR
Is (
km
/s g
/cc)
5200
5250
5300
5350
1.7 2.2 2.7
5
10
15
Rhob (g/cc)
Ip (
km
/s g
/cc)
0 10 20 30 40
Angle
Gather In Situ
0 10 20 30 40
Angle
Gather Oil
0 10 20 30 40
Angle
Gather Brine
-0.4 0.1 0.6-0.8
0
0.8
InterceptG
rad
ien
t
0 10 20 30 40-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
Angle
Rp
p
Reflectivity
In Situ
+8% Clay
+16% Clay
-0.4Clay
-0.4Clay + 0.4Quartz
Top ReservoirDepth (m)
0 5 10 15
5200
5220
5240
5260
5280
5300
5320
5340
5360
5380
Ip and Is
0 0.5 1
5200
5220
5240
5260
5280
5300
5320
5340
5360
5380
VolumeD
epth
(ft)
Brine Gas Quartz Limestone Clay
0.1 0.3 0.53
6
9
12
15
PR
Ip (
km
/s g
/cc)
0.1 0.3 0.50
4
8
PR
Is (
km
/s g
/cc)
5200
5250
5300
5350
1.7 2.2 2.7
5
10
15
Rhob (g/cc)
Ip (
km
/s g
/cc)
0 10 20 30 40
Angle
Gather In Situ
0 10 20 30 40
Angle
Gather Oil
0 10 20 30 40
Angle
Gather Brine
-0.4 0.1 0.6-0.8
0
0.8
Intercept
Gra
die
nt
0 10 20 30 40-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
Angle
Rp
p
Reflectivity
In Situ
+8% Clay
+16% Clay
-0.4Clay
-0.4Clay + 0.4Quartz
Top ReservoirDepth (m)
0 5 10 15
5200
5220
5240
5260
5280
5300
5320
5340
5360
5380
Ip and Is
0 0.5 1
5200
5220
5240
5260
5280
5300
5320
5340
5360
5380
Volume
Depth
(ft)
Brine Gas Quartz Limestone Clay
0.1 0.3 0.53
6
9
12
15
PR
Ip (
km
/s g
/cc)
0.1 0.3 0.50
4
8
PR
Is (
km
/s g
/cc)
5200
5250
5300
5350
1.7 2.2 2.7
5
10
15
Rhob (g/cc)
Ip (
km
/s g
/cc)
0 10 20 30 40
Angle
Gather In Situ
0 10 20 30 40
Angle
Gather Oil
0 10 20 30 40
Angle
Gather Brine
-0.4 0.1 0.6-0.8
0
0.8
Intercept
Gra
die
nt
0 10 20 30 40-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
Angle
Rp
p
Reflectivity
In Situ
+8% Clay
+16% Clay
-0.4Clay
-0.4Clay + 0.4Quartz
Top ReservoirDepth (m)
0 5 10 15
5200
5220
5240
5260
5280
5300
5320
5340
5360
5380
Ip and Is
0 0.5 1
5200
5220
5240
5260
5280
5300
5320
5340
5360
5380
Volume
Depth
(ft)
Brine Gas Quartz Limestone Clay
0.1 0.3 0.53
6
9
12
15
PR
Ip (
km
/s g
/cc)
0.1 0.3 0.50
4
8
PR
Is (
km
/s g
/cc)
5200
5250
5300
5350
1.7 2.2 2.7
5
10
15
Rhob (g/cc)
Ip (
km
/s g
/cc)
0 10 20 30 40
Angle
Gather In Situ
0 10 20 30 40
Angle
Gather Oil
0 10 20 30 40
Angle
Gather Brine
-0.4 0.1 0.6-0.8
0
0.8
Intercept
Gra
die
nt
0 10 20 30 40-0.2
-0.1
0
0.1
0.2
0.3
0.4
0.5
Angle
Rp
p
Reflectivity
In Situ
+8% Clay
+16% Clay
-0.4Clay
-0.4Clay + 0.4Quartz
Top ReservoirDepth (m)
SBAL-EPS Gathers ALIGN GathersSBAL-EPS Gathers ALIGN Gathers
In different areas, seismic may showdifferent type of amplitude anomalies. Theseanomalies are caused by local changes inrock properties. The investigation of whatcauses these anomalies is important becauseit can prove hydrocarbon source, reservoirpresence, and trap. However, similar-lookinganomalies can also be caused not only by thepresence of hydrocarbon, but also by changesin lithology or thickness. We build Taylor-made QI workflows to solve specificproblems. Our workflows may include:
▪ Well-log conditioning for rock physicsanalysis and seismic inversion▪ Estimation of Shear wave velocity anddensity from P-wave velocity based onlithology and rock microstructures.▪ Upscaling of well-log data to seismic data▪ Depth trends analysis▪ Seismic Rock Physics to parameterizeacoustic and simultaneous elastic inversion▪ Extended Elastic Impedance analysis▪ Wedge modeling using horizontal andslanted layers▪ Full waveform synthetic seismograms forisotropic and anisotropic media▪ AVO analysis for probable geologicscenarios in the well and away from the well
✓ What reservoir properties can bediscovered using measured seismicamplitudes?
✓ How can we estimate rock propertiesfrom seismic amplitudes and traveltimes?
The following is a list of possible geologicalfeatures that affect rock elastic propertiessignificantly.
✓ Fractures✓ Mineralogy and TOC✓ Porosity✓ Rock Microstructure ✓ Textural features:
Sorting, cementation, grain, and pore size and shape)
✓ Fluid type✓ Fluid volumes✓ Fluid distribution in pore space✓ Fluid properties✓ Salinity✓ Brittleness✓ Stresses✓ Pore Pressure✓ Temperature
De
pth
(m
)
Y (m)
X (m)
2000
Find Static/Dynamic
correlations
Conversion
Static/Dynamic
Static versus Dynamic Young's modulus
Estat = 0.7872Edyn - 9.4997
0
10
20
30
40
15 35 55Dynamic Young's Modulus (GPa)
Stat
ic Y
oung
's m
odul
us (G
pa)
0 0.5 1
7800
7850
7900
7950
8000
8050
8100
Volume
Depth
(ft)
VO VG VW Clay Quartz Dolomite Calcite
0 100 200
7800
7850
7900
7950
8000
8050
8100
EBI
0 125 250
7800
7850
7900
7950
8000
8050
8100
UCS (MPa)
0 0.5 1
7800
7850
7900
7950
8000
8050
8100
Biot Factor
0 0.5 1
7800
7850
7900
7950
8000
8050
8100
Brittleness
B*E/PR
0 0.5 1
2000
3000
4000
5000
6000
7000
8000
Volume
Depth (ft)
Gas Brine Clay Quartz Dolomite Calcite
0
2000
3000
4000
5000
6000
7000
8000
Anisotropy
0 25 50 75 100
2000
3000
4000
5000
6000
7000
8000
Young-Moduli
E1 E2
0 0.1 0.2 0.3 0.4
2000
3000
4000
5000
6000
7000
8000
Poisson-ratios
PR1 PR2 PR3
0 0.5 1
2000
3000
4000
5000
6000
7000
8000
Volume
Depth (ft)
Gas Brine Clay Quartz Dolomite Calcite
0
2000
3000
4000
5000
6000
7000
8000
Anisotropy
0 25 50 75 100
2000
3000
4000
5000
6000
7000
8000
Young-Moduli
E1 E2
0 0.1 0.2 0.3 0.4
2000
3000
4000
5000
6000
7000
8000
Poisson-ratios
PR1 PR2 PR3
0 0.5 1
1000
2000
3000
4000
5000
6000
7000
8000
Volume
De
pth
(ft
)
VO VG VW Clay Quartz Dolomite Calcite
0 125 250
1000
2000
3000
4000
5000
6000
7000
8000
UUCS (GPa)
0 15 30 45
1000
2000
3000
4000
5000
6000
7000
8000
Stresses (MPa)
Depth
(ft
)
Vertical Stress
Pore Pressure
Horizontal Stress
PR
PREdyn Stresses PR Estat Strength
Conversion
Static/Dynamic
0.1 0.2 0.3 0.46
12
18
Poisson ratio
Ip (
km
/s g
/cc)
0.1 0.2 0.3 0.4
4
8
12
Poisson ratio
Is (
km
/s g
/cc )
Adding 0.5% of random cracks with aspect ratio 0.005, filled with in situ fluids
2.4 2.6 2.86
12
18
Density (g/cc)
Ip (
km
/s g
/cc )
0
0.1
0.2
0.3
0.4
SBAL-EPS Gathers ALIGN GathersSBAL-EPS Gathers ALIGN Gathers
0 0.5 1
2400
2450
2500
2550
2600
2650
2700
2750
2800
2850
2900
Volume
Depth
(ft
)
Brine
Oil
Gas
Pyrite
Chert
Dolerite
Dolomite
Calcite
MuscMica
Feldspar
Quartz
Silt
Shale
Chlorite
Smectite
Kaolinite
Illite
0 0.1 0.2
2400
2450
2500
2550
2600
2650
2700
2750
2800
2850
2900
P-Anisotropy
0 0.1 0.2
2400
2450
2500
2550
2600
2650
2700
2750
2800
2850
2900
S-Anisotropy
0 0.1 0.2
2400
2450
2500
2550
2600
2650
2700
2750
2800
2850
2900
Delta
0 0.5 1
2400
2450
2500
2550
2600
2650
2700
2750
2800
2850
2900
Volume
Depth
(ft
)
Brine
Oil
Gas
Pyrite
Chert
Dolerite
Dolomite
Calcite
MuscMica
Feldspar
Quartz
Silt
Shale
Chlorite
Smectite
Kaolinite
Illite
0 0.1 0.2
2400
2450
2500
2550
2600
2650
2700
2750
2800
2850
2900
P-Anisotropy
0 0.1 0.2
2400
2450
2500
2550
2600
2650
2700
2750
2800
2850
2900
S-Anisotropy
0 0.1 0.2
2400
2450
2500
2550
2600
2650
2700
2750
2800
2850
2900
Delta
0.1 0.2 0.3 0.46
12
18
Poisson ratio
Ip (
km
/s g
/cc)
0.1 0.2 0.3 0.4
4
8
12
Poisson ratio
Is (
km
/s g
/cc )
Adding 0.5% of random cracks with aspect ratio 0.005, filled with in situ fluids
2.4 2.6 2.86
12
18
Density (g/cc)
Ip (
km
/s g
/cc )
0
0.1
0.2
0.3
0.4
SBAL-EPS Gathers ALIGN GathersSBAL-EPS Gathers ALIGN Gathers
0 0.5 1
2400
2450
2500
2550
2600
2650
2700
2750
2800
2850
2900
Volume
Depth
(ft
)
Brine
Oil
Gas
Pyrite
Chert
Dolerite
Dolomite
Calcite
MuscMica
Feldspar
Quartz
Silt
Shale
Chlorite
Smectite
Kaolinite
Illite
0 0.1 0.2
2400
2450
2500
2550
2600
2650
2700
2750
2800
2850
2900
P-Anisotropy
0 0.1 0.2
2400
2450
2500
2550
2600
2650
2700
2750
2800
2850
2900
S-Anisotropy
0 0.1 0.2
2400
2450
2500
2550
2600
2650
2700
2750
2800
2850
2900
Delta
0 0.5 1
2400
2450
2500
2550
2600
2650
2700
2750
2800
2850
2900
Volume
Depth
(ft
)
Brine
Oil
Gas
Pyrite
Chert
Dolerite
Dolomite
Calcite
MuscMica
Feldspar
Quartz
Silt
Shale
Chlorite
Smectite
Kaolinite
Illite
0 0.1 0.2
2400
2450
2500
2550
2600
2650
2700
2750
2800
2850
2900
P-Anisotropy
0 0.1 0.2
2400
2450
2500
2550
2600
2650
2700
2750
2800
2850
2900
S-Anisotropy
0 0.1 0.2
2400
2450
2500
2550
2600
2650
2700
2750
2800
2850
2900
Delta
These courses are uniquely designedcomprehensive state-of-the-art instructionsin rock physics and seismic petrophysics.These courses will equip you with thenecessary tools to start applying rockphysics. They are intended for Geologists,Geophysicists, Petrophysicists, andEngineers to provide grounding inunderstanding relationships betweengeophysical measurements and rockproperties, with emphasis on the integratedinterpretation of seismic, well logs, andlaboratory data. They are not exclusively atheoretical courses, but orientation on thenecessary theories will be provided.
✓ Rock Physics Fundamentals✓ Fluid Substitution✓ Seismic Petrophysics✓ Static/Dynamic Mechanical Properties✓ Pore Pressure and Fracture Gradient
Seismic Rock Physics, LLC.
Helps optimizing well-planning and reducing risk
Research, Consulting, and Courses
SERVICES
Seismic Rock Physics, LLC.
CONSULTING
CONTACT US
Seismic Derived Mechanical Properties for Geomechanic Studies
Seismic Rock Physics LLC. is an oil-servicecompany based in Texas, USA.Rock Physics helps E&P companies to de-riskprospects and analyze uncertainties inresource estimation during seismicinterpretation. The understanding of therelationships between rock properties andseismic signature help to define if thediscrimination of reservoir properties can beachieved using only amplitude with offsetanalysis or also a specific kind of seismicinversion technique.
• Seismic Rock Physics• Regional Rock Physics Studies• 1D-3D Static Mechanical Properties• Rock Physics Based Seismic
Quantitative Interpretation Products• Pore Pressure and Fracture Gradient
Studies• Time and Depth Seismic Processing• Seismic Survey Design and QC• Rock Physics Courses• Research in Rock Physics• Consulting
Seismic Rock Physics, LLC.info@seismicrockphysicsllc.comTlf +1 346 288 1925Houston, Texas, USAwww.seismicrockphysicsllc.com
We offer consultancy services in rockphysics. A seismic rock physics studyincludes different tasks depending on thegoal of the project. Usually, it comprises theintegration of laboratory-, well-, and seismic-data. The purpose of seismic rock physics isto better understand, in terms of rockproperties, the seismic response of targetreservoirs and of the overlying andunderlying formations. Based on a rockphysics feasibility study, in one or severalwells, we should be able to define whichseismic attribute or inversion method areoptimal for: the characterization of targetformations and the overlying and underlyingformations. The rock physics feasibility studyalso allows to select better parameters forgather conditioning, seismic inversion, andfind better ways to transfer well informationto seismic.
Laboratory Data
Dynamic and static Young’s moduli,Poisson’s ratio, and mechanical properties atin situ fluids, pore pressure, stresses, andtemperature.
Well Data
Well-log derived Dynamic and staticYoung’s modulus and Poisson’s ratio, andstrength at well-log scale, using labcorrelations. Stresses and Pressureestimated as a function of depth.
Simultaneous Elastic Inversion
Seismic derived dynamic and static Young’smodulus, Poisson’s ratio, and strength atseismic scale, calibrated with well-logs andusing laboratory correlations.
3D-models of mechanical Properties
3D models of mechanical properties derivedfrom seismic. Extracted mini-cubes can beused for, e.g. hydraulic fracturing.
PRMini-Cube
Estat
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