Improve Migration Image Quality by 3-D Migration Deconvolution Jianhua Yu, Gerard T. Schuster...
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![Page 1: Improve Migration Image Quality by 3-D Migration Deconvolution Jianhua Yu, Gerard T. Schuster University of Utah.](https://reader030.fdocuments.in/reader030/viewer/2022020922/56649d535503460f94a2f5a6/html5/thumbnails/1.jpg)
Improve Migration Image Quality Improve Migration Image Quality by 3-D Migration Deconvolutionby 3-D Migration Deconvolution
Jianhua Yu, Gerard T. Schuster Jianhua Yu, Gerard T. Schuster
University of Utah University of Utah
![Page 2: Improve Migration Image Quality by 3-D Migration Deconvolution Jianhua Yu, Gerard T. Schuster University of Utah.](https://reader030.fdocuments.in/reader030/viewer/2022020922/56649d535503460f94a2f5a6/html5/thumbnails/2.jpg)
Motivation
OutlineOutline
Migration Deconvolution
Examples
Conclusions
Implementation of MD
![Page 3: Improve Migration Image Quality by 3-D Migration Deconvolution Jianhua Yu, Gerard T. Schuster University of Utah.](https://reader030.fdocuments.in/reader030/viewer/2022020922/56649d535503460f94a2f5a6/html5/thumbnails/3.jpg)
Migration noise and artifacts
Seismic Migration NoiseSeismic Migration Noise0.5
3.5
Dep
th (
km
)
Footprint
Weak illumination
![Page 4: Improve Migration Image Quality by 3-D Migration Deconvolution Jianhua Yu, Gerard T. Schuster University of Utah.](https://reader030.fdocuments.in/reader030/viewer/2022020922/56649d535503460f94a2f5a6/html5/thumbnails/4.jpg)
Limit recording aperture
What Affects Seismic Migration Quality What Affects Seismic Migration Quality
Irregular acquisition geometry
Incorrect velocity
High order phenomenon: anisotropy, attenuation etc.
Bandlimited wavelet
![Page 5: Improve Migration Image Quality by 3-D Migration Deconvolution Jianhua Yu, Gerard T. Schuster University of Utah.](https://reader030.fdocuments.in/reader030/viewer/2022020922/56649d535503460f94a2f5a6/html5/thumbnails/5.jpg)
Noise and artifacts
Migration Image suffers fromMigration Image suffers from
Poor spatial resolution
Non-uniform illumination
![Page 6: Improve Migration Image Quality by 3-D Migration Deconvolution Jianhua Yu, Gerard T. Schuster University of Utah.](https://reader030.fdocuments.in/reader030/viewer/2022020922/56649d535503460f94a2f5a6/html5/thumbnails/6.jpg)
Objective :
Develop 3-D migration deconvolution
Limit recording aperture
Irregular acquisition geometry
to deblur the influence of
![Page 7: Improve Migration Image Quality by 3-D Migration Deconvolution Jianhua Yu, Gerard T. Schuster University of Utah.](https://reader030.fdocuments.in/reader030/viewer/2022020922/56649d535503460f94a2f5a6/html5/thumbnails/7.jpg)
Objective :
Improving spatial resolution
Enhancing illumination
Suppressing migration noise and artifacts
![Page 8: Improve Migration Image Quality by 3-D Migration Deconvolution Jianhua Yu, Gerard T. Schuster University of Utah.](https://reader030.fdocuments.in/reader030/viewer/2022020922/56649d535503460f94a2f5a6/html5/thumbnails/8.jpg)
Motivation
OutlineOutline
Migration Deconvolution (MD)
Examples
Conclusions
Implementation of MD
![Page 9: Improve Migration Image Quality by 3-D Migration Deconvolution Jianhua Yu, Gerard T. Schuster University of Utah.](https://reader030.fdocuments.in/reader030/viewer/2022020922/56649d535503460f94a2f5a6/html5/thumbnails/9.jpg)
mm = = G dG dTT butbut dd = G = G RRMigrated Section Data
G RG R
mm = = PSF(R)PSF(R) Migration image = Blurred image of Migration image = Blurred image of
true reflectivity modeltrue reflectivity model
Migration operator
Migration Deconvolution TheoryMigration Deconvolution Theory
![Page 10: Improve Migration Image Quality by 3-D Migration Deconvolution Jianhua Yu, Gerard T. Schuster University of Utah.](https://reader030.fdocuments.in/reader030/viewer/2022020922/56649d535503460f94a2f5a6/html5/thumbnails/10.jpg)
mRG GT
Migration imageReflectivity
Migration Green’s function
Migration Deconvolution TheoryMigration Deconvolution Theory
![Page 11: Improve Migration Image Quality by 3-D Migration Deconvolution Jianhua Yu, Gerard T. Schuster University of Utah.](https://reader030.fdocuments.in/reader030/viewer/2022020922/56649d535503460f94a2f5a6/html5/thumbnails/11.jpg)
mRG GT
G GT -1
][ G GT -1
][
11
Migration Deconvolution TheoryMigration Deconvolution Theory
![Page 12: Improve Migration Image Quality by 3-D Migration Deconvolution Jianhua Yu, Gerard T. Schuster University of Utah.](https://reader030.fdocuments.in/reader030/viewer/2022020922/56649d535503460f94a2f5a6/html5/thumbnails/12.jpg)
mR
G GT -1
][
1
Migration Deconvolution TheoryMigration Deconvolution Theory
sgsoogsgomig rdrdrrGrrGrrGrrGrr
)()()()()( **Migration Green’s functionMigration Green’s function
(Schuster et al., 2000)(Schuster et al., 2000)
![Page 13: Improve Migration Image Quality by 3-D Migration Deconvolution Jianhua Yu, Gerard T. Schuster University of Utah.](https://reader030.fdocuments.in/reader030/viewer/2022020922/56649d535503460f94a2f5a6/html5/thumbnails/13.jpg)
ooomig rdrRrrrm
)()()(
sgsoogsgomig rdrdrrGrrGrrGrrGrr
)()()()()( **
Migration Deconvolution TheoryMigration Deconvolution Theory
![Page 14: Improve Migration Image Quality by 3-D Migration Deconvolution Jianhua Yu, Gerard T. Schuster University of Utah.](https://reader030.fdocuments.in/reader030/viewer/2022020922/56649d535503460f94a2f5a6/html5/thumbnails/14.jpg)
Lateral shift invariant migration Green’s functionLateral shift invariant migration Green’s function
Reduction of MD cost
),( pp yx --- --- Reference position of migration Green’s functionReference position of migration Green’s function
),,,,( oppoomig zyxzyyxx
oooooo dzdydxzyxR ),,(
)(rm
In wavenumber-space domain:
Rm
![Page 15: Improve Migration Image Quality by 3-D Migration Deconvolution Jianhua Yu, Gerard T. Schuster University of Utah.](https://reader030.fdocuments.in/reader030/viewer/2022020922/56649d535503460f94a2f5a6/html5/thumbnails/15.jpg)
Motivation
OutlineOutline
Migration Deconvolution (MD)
Examples
Conclusions
Implementation of MD
![Page 16: Improve Migration Image Quality by 3-D Migration Deconvolution Jianhua Yu, Gerard T. Schuster University of Utah.](https://reader030.fdocuments.in/reader030/viewer/2022020922/56649d535503460f94a2f5a6/html5/thumbnails/16.jpg)
MD Implementation Steps:MD Implementation Steps:
Step 1: Prepare traveltime table
Velocity cube
Acquisition geometry information
Step 2: Calculate the migration Green’s function at the depth Zi ),,,,( ippj zyxzyx
![Page 17: Improve Migration Image Quality by 3-D Migration Deconvolution Jianhua Yu, Gerard T. Schuster University of Utah.](https://reader030.fdocuments.in/reader030/viewer/2022020922/56649d535503460f94a2f5a6/html5/thumbnails/17.jpg)
Step 3: Obtain MD image at the depth Zi by solving following equation
Rm
MD Implementation Steps:MD Implementation Steps:
Step 4: Repeat Steps 2-3 until the maximum depth is finished
![Page 18: Improve Migration Image Quality by 3-D Migration Deconvolution Jianhua Yu, Gerard T. Schuster University of Utah.](https://reader030.fdocuments.in/reader030/viewer/2022020922/56649d535503460f94a2f5a6/html5/thumbnails/18.jpg)
Motivation
OutlineOutline
Migration Deconvolution (MD)
Examples: Synthetic data
Conclusions
Implementation of MD
![Page 19: Improve Migration Image Quality by 3-D Migration Deconvolution Jianhua Yu, Gerard T. Schuster University of Utah.](https://reader030.fdocuments.in/reader030/viewer/2022020922/56649d535503460f94a2f5a6/html5/thumbnails/19.jpg)
Recording Geometry
: Sources : Sources : Receivers: Receivers
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0
3 X (km)03
Y (km)0
3 X (km)03
Y (km)
0
3 X (km)03
Y (km)
0
3 X (km)03
Y (km)
0
3 X (km)03
Y (km)
0
3 X (km)03
Y (km)
MIG MD
Z=1 km
Z=3 km
Z=5 km
Depth Slices
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0
3 X (km)03
Y (km)0
3 X (km)03
Y (km)
0
3 X (km)03
Y (km)
0
3 X (km)03
Y (km)
0
3 X (km)03
Y (km)
0
3 X (km)03
Y (km)
MIG MD
Z=7 km
Z=9 km
Z=10 km
Depth Slices
![Page 22: Improve Migration Image Quality by 3-D Migration Deconvolution Jianhua Yu, Gerard T. Schuster University of Utah.](https://reader030.fdocuments.in/reader030/viewer/2022020922/56649d535503460f94a2f5a6/html5/thumbnails/22.jpg)
00
2.5 km2.5 km
00
Meandering Stream Model
2.5 km2.5 km
5 x 1 Sources; 11 x 7 Receivers5 x 1 Sources; 11 x 7 Receivers
3.5
km
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MigMig
MDMD
ModelModel
0 Y (km)
X (km
)
2.5
0
2.5
Z=3.5 KM
![Page 24: Improve Migration Image Quality by 3-D Migration Deconvolution Jianhua Yu, Gerard T. Schuster University of Utah.](https://reader030.fdocuments.in/reader030/viewer/2022020922/56649d535503460f94a2f5a6/html5/thumbnails/24.jpg)
VSP Geometry: source 21 x 21; geophone: 12
Depth=1.75 kmMigration MD
![Page 25: Improve Migration Image Quality by 3-D Migration Deconvolution Jianhua Yu, Gerard T. Schuster University of Utah.](https://reader030.fdocuments.in/reader030/viewer/2022020922/56649d535503460f94a2f5a6/html5/thumbnails/25.jpg)
GOM Velocity Model X (km)
Dep
th (
km
)
12
0
2 10
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X (km)
Dep
th (
km
)
10
8
4 10 X (km)4 10
Migration Migration+MD
![Page 27: Improve Migration Image Quality by 3-D Migration Deconvolution Jianhua Yu, Gerard T. Schuster University of Utah.](https://reader030.fdocuments.in/reader030/viewer/2022020922/56649d535503460f94a2f5a6/html5/thumbnails/27.jpg)
X (km)
Dep
th (
km
)
10
8.5
4 10 X (km)4 10
Migration Migration+MD
![Page 28: Improve Migration Image Quality by 3-D Migration Deconvolution Jianhua Yu, Gerard T. Schuster University of Utah.](https://reader030.fdocuments.in/reader030/viewer/2022020922/56649d535503460f94a2f5a6/html5/thumbnails/28.jpg)
00
12.2 km12.2 km
00
3-D SEG/EAGE Salt Model
12.2 km12.2 km
9 x 5 Sources; 9 x 5 Sources; dxshot=dyshot=1 km
201 x 201 Receivers201 x 201 Receivers
Imaging: dx=dy=20 m
![Page 29: Improve Migration Image Quality by 3-D Migration Deconvolution Jianhua Yu, Gerard T. Schuster University of Utah.](https://reader030.fdocuments.in/reader030/viewer/2022020922/56649d535503460f94a2f5a6/html5/thumbnails/29.jpg)
3-D SEG/EAGE Salt Model
X (km)Y (km)
Y=7.12 km
![Page 30: Improve Migration Image Quality by 3-D Migration Deconvolution Jianhua Yu, Gerard T. Schuster University of Utah.](https://reader030.fdocuments.in/reader030/viewer/2022020922/56649d535503460f94a2f5a6/html5/thumbnails/30.jpg)
Mig z = 1.4 km MDX (km)
3
10
Y (
km
)
5 9.8 5 9.8X (km)
![Page 31: Improve Migration Image Quality by 3-D Migration Deconvolution Jianhua Yu, Gerard T. Schuster University of Utah.](https://reader030.fdocuments.in/reader030/viewer/2022020922/56649d535503460f94a2f5a6/html5/thumbnails/31.jpg)
Mig (z=1.2 km)X (km)
3
10
Y (
km
)
5 9.8 5 9.8X (km)
MD (z=1.2 km)
![Page 32: Improve Migration Image Quality by 3-D Migration Deconvolution Jianhua Yu, Gerard T. Schuster University of Utah.](https://reader030.fdocuments.in/reader030/viewer/2022020922/56649d535503460f94a2f5a6/html5/thumbnails/32.jpg)
X (km)0 203
10
Dep
th (
km
)Sigsbee2B Model
![Page 33: Improve Migration Image Quality by 3-D Migration Deconvolution Jianhua Yu, Gerard T. Schuster University of Utah.](https://reader030.fdocuments.in/reader030/viewer/2022020922/56649d535503460f94a2f5a6/html5/thumbnails/33.jpg)
X (km)0 202.5
10
Dep
th (
km
)
Mig
![Page 34: Improve Migration Image Quality by 3-D Migration Deconvolution Jianhua Yu, Gerard T. Schuster University of Utah.](https://reader030.fdocuments.in/reader030/viewer/2022020922/56649d535503460f94a2f5a6/html5/thumbnails/34.jpg)
X (km)0 202.5
10
Dep
th (
km
)
MD
![Page 35: Improve Migration Image Quality by 3-D Migration Deconvolution Jianhua Yu, Gerard T. Schuster University of Utah.](https://reader030.fdocuments.in/reader030/viewer/2022020922/56649d535503460f94a2f5a6/html5/thumbnails/35.jpg)
5
10
Dep
th (
km
)Mig.
MD
![Page 36: Improve Migration Image Quality by 3-D Migration Deconvolution Jianhua Yu, Gerard T. Schuster University of Utah.](https://reader030.fdocuments.in/reader030/viewer/2022020922/56649d535503460f94a2f5a6/html5/thumbnails/36.jpg)
Motivation
OutlineOutline
Migration Deconvolution (MD)
Examples: 2-D field data
Conclusions
Implementation of MD
![Page 37: Improve Migration Image Quality by 3-D Migration Deconvolution Jianhua Yu, Gerard T. Schuster University of Utah.](https://reader030.fdocuments.in/reader030/viewer/2022020922/56649d535503460f94a2f5a6/html5/thumbnails/37.jpg)
PS PSTM Image ( by Unocal)PS PSTM Image ( by Unocal)
0 6X (km)
0
8
Tim
e (s
)
![Page 38: Improve Migration Image Quality by 3-D Migration Deconvolution Jianhua Yu, Gerard T. Schuster University of Utah.](https://reader030.fdocuments.in/reader030/viewer/2022020922/56649d535503460f94a2f5a6/html5/thumbnails/38.jpg)
0 6X (km)
0
8
Tim
e (s
)
MDMDPSTM(courtesy of Unocal)PSTM(courtesy of Unocal) PSTMDPSTMD
![Page 39: Improve Migration Image Quality by 3-D Migration Deconvolution Jianhua Yu, Gerard T. Schuster University of Utah.](https://reader030.fdocuments.in/reader030/viewer/2022020922/56649d535503460f94a2f5a6/html5/thumbnails/39.jpg)
0 6X (km)
3
8
Tim
e (s
)
MDMDPSTM(courtesy of Unocal) PSTMD
![Page 40: Improve Migration Image Quality by 3-D Migration Deconvolution Jianhua Yu, Gerard T. Schuster University of Utah.](https://reader030.fdocuments.in/reader030/viewer/2022020922/56649d535503460f94a2f5a6/html5/thumbnails/40.jpg)
MD
Tim
e (s
)Mig (courtesy of Aramco)
![Page 41: Improve Migration Image Quality by 3-D Migration Deconvolution Jianhua Yu, Gerard T. Schuster University of Utah.](https://reader030.fdocuments.in/reader030/viewer/2022020922/56649d535503460f94a2f5a6/html5/thumbnails/41.jpg)
Tim
e (s
)Mig (Courtesy of Aramco) MD
![Page 42: Improve Migration Image Quality by 3-D Migration Deconvolution Jianhua Yu, Gerard T. Schuster University of Utah.](https://reader030.fdocuments.in/reader030/viewer/2022020922/56649d535503460f94a2f5a6/html5/thumbnails/42.jpg)
Mig (Courtesy of Aramco) MD
![Page 43: Improve Migration Image Quality by 3-D Migration Deconvolution Jianhua Yu, Gerard T. Schuster University of Utah.](https://reader030.fdocuments.in/reader030/viewer/2022020922/56649d535503460f94a2f5a6/html5/thumbnails/43.jpg)
Motivation
OutlineOutline
Migration Deconvolution (MD)
Examples: 3-D field data
Conclusions
Implementation of MD
![Page 44: Improve Migration Image Quality by 3-D Migration Deconvolution Jianhua Yu, Gerard T. Schuster University of Utah.](https://reader030.fdocuments.in/reader030/viewer/2022020922/56649d535503460f94a2f5a6/html5/thumbnails/44.jpg)
1.6 s1.6 s
Inline
Cro
sslin
e3D PSTM (courtesy of Unocal) MD
![Page 45: Improve Migration Image Quality by 3-D Migration Deconvolution Jianhua Yu, Gerard T. Schuster University of Utah.](https://reader030.fdocuments.in/reader030/viewer/2022020922/56649d535503460f94a2f5a6/html5/thumbnails/45.jpg)
2.0 s2.0 s
Cro
ssli
ne
3D PSTM (courtesy of Unocal) MD
![Page 46: Improve Migration Image Quality by 3-D Migration Deconvolution Jianhua Yu, Gerard T. Schuster University of Utah.](https://reader030.fdocuments.in/reader030/viewer/2022020922/56649d535503460f94a2f5a6/html5/thumbnails/46.jpg)
3.0
Mig in Inline (Courtesy of Unocal) MDT
imes
(s)
1.2
![Page 47: Improve Migration Image Quality by 3-D Migration Deconvolution Jianhua Yu, Gerard T. Schuster University of Utah.](https://reader030.fdocuments.in/reader030/viewer/2022020922/56649d535503460f94a2f5a6/html5/thumbnails/47.jpg)
Mig (Courtesy of Unocal) MDInline Number1 90 1 90
1
300
Cro
sslin
e N
um
ber
Inline Number
(2 kft)
![Page 48: Improve Migration Image Quality by 3-D Migration Deconvolution Jianhua Yu, Gerard T. Schuster University of Utah.](https://reader030.fdocuments.in/reader030/viewer/2022020922/56649d535503460f94a2f5a6/html5/thumbnails/48.jpg)
(3.6 kft)
Inline Number1 90 1 901
265
Cro
sslin
e N
um
ber
Inline Number
Mig MD
![Page 49: Improve Migration Image Quality by 3-D Migration Deconvolution Jianhua Yu, Gerard T. Schuster University of Utah.](https://reader030.fdocuments.in/reader030/viewer/2022020922/56649d535503460f94a2f5a6/html5/thumbnails/49.jpg)
Inline Number1 901.1
7.0
Dep
th (
kft
)
90 Inline Number1
(Crossline=50)
Mig (courtesy of Unocal) MD
![Page 50: Improve Migration Image Quality by 3-D Migration Deconvolution Jianhua Yu, Gerard T. Schuster University of Utah.](https://reader030.fdocuments.in/reader030/viewer/2022020922/56649d535503460f94a2f5a6/html5/thumbnails/50.jpg)
(crossline 200)
1 90 1 901.1
8.0
Dep
th (
kft
)Mig (courtesy of Unocal) MD
Inline Number Inline Number
![Page 51: Improve Migration Image Quality by 3-D Migration Deconvolution Jianhua Yu, Gerard T. Schuster University of Utah.](https://reader030.fdocuments.in/reader030/viewer/2022020922/56649d535503460f94a2f5a6/html5/thumbnails/51.jpg)
Motivation
OutlineOutline
Migration Deconvolution (MD)
Examples
Conclusions
Implementation of MD
![Page 52: Improve Migration Image Quality by 3-D Migration Deconvolution Jianhua Yu, Gerard T. Schuster University of Utah.](https://reader030.fdocuments.in/reader030/viewer/2022020922/56649d535503460f94a2f5a6/html5/thumbnails/52.jpg)
ConclusionsConclusions
Suppress migration noise
Improve spatial resolution
MD cost is related to acquisition geometry
V(z) assumption for moderately complex models
![Page 53: Improve Migration Image Quality by 3-D Migration Deconvolution Jianhua Yu, Gerard T. Schuster University of Utah.](https://reader030.fdocuments.in/reader030/viewer/2022020922/56649d535503460f94a2f5a6/html5/thumbnails/53.jpg)
AcknowledgementsAcknowledgements
UTAM Sponsors
SMAART Joint Venture
Aramco,Aramco, BP and Unocal