Reverse-Time Migration For 3D SEG/EAGE Salt Model Yue Wang University of Utah.
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Transcript of Reverse-Time Migration For 3D SEG/EAGE Salt Model Yue Wang University of Utah.
![Page 1: Reverse-Time Migration For 3D SEG/EAGE Salt Model Yue Wang University of Utah.](https://reader035.fdocuments.in/reader035/viewer/2022062516/56649d785503460f94a5b531/html5/thumbnails/1.jpg)
Reverse-Time MigrationReverse-Time MigrationFor 3D SEG/EAGE For 3D SEG/EAGE
Salt ModelSalt Model
Yue WangYue Wang
University of UtahUniversity of Utah
![Page 2: Reverse-Time Migration For 3D SEG/EAGE Salt Model Yue Wang University of Utah.](https://reader035.fdocuments.in/reader035/viewer/2022062516/56649d785503460f94a5b531/html5/thumbnails/2.jpg)
OutlineOutline
• Method & Previous 2D resultsMethod & Previous 2D results
• Result for 3D SEG/EAGE Salt Result for 3D SEG/EAGE Salt ModelModel
• Conclusions & DiscussionsConclusions & Discussions
![Page 3: Reverse-Time Migration For 3D SEG/EAGE Salt Model Yue Wang University of Utah.](https://reader035.fdocuments.in/reader035/viewer/2022062516/56649d785503460f94a5b531/html5/thumbnails/3.jpg)
2-D Salt Model2-D Salt Model
Distance (km)Distance (km)
Dep
th (
km
)D
epth
(k
m)
2.72.7
00
00 4.54.5
** Geophone LineGeophone LineSourceSource
![Page 4: Reverse-Time Migration For 3D SEG/EAGE Salt Model Yue Wang University of Utah.](https://reader035.fdocuments.in/reader035/viewer/2022062516/56649d785503460f94a5b531/html5/thumbnails/4.jpg)
Shot GatherShot GatherPressurePressureVerticalVerticalHorizontalHorizontal
Tim
e (s
) T
ime
(s)
Distance (km)Distance (km)22
00
0.90.9 3.63.6 Distance (km)Distance (km)0.90.9 3.63.6 Distance (km)Distance (km)0.90.9 3.63.6
PSPS
PPPPReceiver-Side Receiver-Side Surface GhostSurface Ghost
Reversed PhaseReversed Phase
![Page 5: Reverse-Time Migration For 3D SEG/EAGE Salt Model Yue Wang University of Utah.](https://reader035.fdocuments.in/reader035/viewer/2022062516/56649d785503460f94a5b531/html5/thumbnails/5.jpg)
Water bottomWater bottom
How to use P & V?How to use P & V?Key Idea:Key Idea:
• Migrate pressure and particle Migrate pressure and particle velocity velocity simultaneouslysimultaneously by using by using wave-equation;wave-equation;
Up-goingUp-goingWaveWave Down-goingDown-going
Down-goingDown-goingWaveWave
Up-goingUp-going
![Page 6: Reverse-Time Migration For 3D SEG/EAGE Salt Model Yue Wang University of Utah.](https://reader035.fdocuments.in/reader035/viewer/2022062516/56649d785503460f94a5b531/html5/thumbnails/6.jpg)
Kirchhoff MigrationKirchhoff Migration
Distance (km)Distance (km)
Dep
th (
km
)D
epth
(k
m)
2.52.5
00
0.450.45 4.054.05
![Page 7: Reverse-Time Migration For 3D SEG/EAGE Salt Model Yue Wang University of Utah.](https://reader035.fdocuments.in/reader035/viewer/2022062516/56649d785503460f94a5b531/html5/thumbnails/7.jpg)
Kirchhoff MigrationKirchhoff Migration
Distance (km)Distance (km)
Dep
th (
km
)D
epth
(k
m)
2.52.5
00
0.450.45 4.054.05
![Page 8: Reverse-Time Migration For 3D SEG/EAGE Salt Model Yue Wang University of Utah.](https://reader035.fdocuments.in/reader035/viewer/2022062516/56649d785503460f94a5b531/html5/thumbnails/8.jpg)
Distance (km)Distance (km)
Dep
th (
km
)D
epth
(k
m)
2.52.5
00
0.450.45 4.054.05
Particle-Velocity RT SchemeParticle-Velocity RT Scheme
![Page 9: Reverse-Time Migration For 3D SEG/EAGE Salt Model Yue Wang University of Utah.](https://reader035.fdocuments.in/reader035/viewer/2022062516/56649d785503460f94a5b531/html5/thumbnails/9.jpg)
Distance (km)Distance (km)
Dep
th (
km
)D
epth
(k
m)
2.52.5
00
0.450.45 4.054.05
P & V RT SchemeP & V RT Scheme
![Page 10: Reverse-Time Migration For 3D SEG/EAGE Salt Model Yue Wang University of Utah.](https://reader035.fdocuments.in/reader035/viewer/2022062516/56649d785503460f94a5b531/html5/thumbnails/10.jpg)
OutlineOutline
• Method & Previous 2D resultsMethod & Previous 2D results
• Result for 3D SEG/EAGE Salt Result for 3D SEG/EAGE Salt ModelModel
• Conclusions & DiscussionsConclusions & Discussions
![Page 11: Reverse-Time Migration For 3D SEG/EAGE Salt Model Yue Wang University of Utah.](https://reader035.fdocuments.in/reader035/viewer/2022062516/56649d785503460f94a5b531/html5/thumbnails/11.jpg)
3-D SEG/EAGE Salt Model3-D SEG/EAGE Salt Model
Distance (km)Distance (km)
Dep
th (
km
)D
epth
(k
m)
22
00
00 4.54.5
Ocean-BottomOcean-BottomGeophone LineGeophone Line
Exploding Exploding Reflector SourceReflector Source
CrosslineCrossline
![Page 12: Reverse-Time Migration For 3D SEG/EAGE Salt Model Yue Wang University of Utah.](https://reader035.fdocuments.in/reader035/viewer/2022062516/56649d785503460f94a5b531/html5/thumbnails/12.jpg)
3-D SEG/EAGE Salt Model3-D SEG/EAGE Salt Model
Distance (km)Distance (km)
Dep
th (
km
)D
epth
(k
m)
22
00
00 4.54.5
Ocean-BottomOcean-BottomGeophone LineGeophone Line
Exploding SourceExploding Source
Direct Arrival FromDirect Arrival FromReflection LayerReflection Layer
Ghost ReflectinsGhost Reflectins
![Page 13: Reverse-Time Migration For 3D SEG/EAGE Salt Model Yue Wang University of Utah.](https://reader035.fdocuments.in/reader035/viewer/2022062516/56649d785503460f94a5b531/html5/thumbnails/13.jpg)
3-D SEG/EAGE Salt Model3-D SEG/EAGE Salt Model
Distance (km)Distance (km)
Dep
th (
km
)D
epth
(k
m)
22
00
00 4.54.5
Ocean-BottomOcean-BottomGeophone LineGeophone Line
Exploding SourceExploding Source
![Page 14: Reverse-Time Migration For 3D SEG/EAGE Salt Model Yue Wang University of Utah.](https://reader035.fdocuments.in/reader035/viewer/2022062516/56649d785503460f94a5b531/html5/thumbnails/14.jpg)
3-D SEG/EAGE Salt Model3-D SEG/EAGE Salt Model
Distance (km)Distance (km)
Dep
th (
km
)D
epth
(k
m)
22
00
00 4.54.5
Ocean-BottomOcean-BottomGeophone LineGeophone Line
Exploding SourceExploding Source
Ghost ReflectinsGhost Reflectins
![Page 15: Reverse-Time Migration For 3D SEG/EAGE Salt Model Yue Wang University of Utah.](https://reader035.fdocuments.in/reader035/viewer/2022062516/56649d785503460f94a5b531/html5/thumbnails/15.jpg)
Particle-Velocity RT SchemeParticle-Velocity RT Scheme
Distance (km)Distance (km)
Dep
th (
km
)D
epth
(k
m)
22
00
00 4.54.5
![Page 16: Reverse-Time Migration For 3D SEG/EAGE Salt Model Yue Wang University of Utah.](https://reader035.fdocuments.in/reader035/viewer/2022062516/56649d785503460f94a5b531/html5/thumbnails/16.jpg)
Particle-Velocity RT SchemeParticle-Velocity RT Scheme
Distance (km)Distance (km)
Dep
th (
km
)D
epth
(k
m)
22
00
00 4.54.5
![Page 17: Reverse-Time Migration For 3D SEG/EAGE Salt Model Yue Wang University of Utah.](https://reader035.fdocuments.in/reader035/viewer/2022062516/56649d785503460f94a5b531/html5/thumbnails/17.jpg)
Distance (km)Distance (km)
Dep
th (
km
)D
epth
(k
m)
22
00
00 4.54.5
P & V RT SchemeP & V RT Scheme
![Page 18: Reverse-Time Migration For 3D SEG/EAGE Salt Model Yue Wang University of Utah.](https://reader035.fdocuments.in/reader035/viewer/2022062516/56649d785503460f94a5b531/html5/thumbnails/18.jpg)
Particle-Velocity RT SchemeParticle-Velocity RT Scheme
Distance (km)Distance (km)
Dep
th (
km
)D
epth
(k
m)
22
00
00 4.54.5
![Page 19: Reverse-Time Migration For 3D SEG/EAGE Salt Model Yue Wang University of Utah.](https://reader035.fdocuments.in/reader035/viewer/2022062516/56649d785503460f94a5b531/html5/thumbnails/19.jpg)
Conclusions & DiscussionsConclusions & Discussions
• Image using both primary and ghost Image using both primary and ghost reflections.reflections.
• FD + kirchhoff hybrid scheme?FD + kirchhoff hybrid scheme?
![Page 20: Reverse-Time Migration For 3D SEG/EAGE Salt Model Yue Wang University of Utah.](https://reader035.fdocuments.in/reader035/viewer/2022062516/56649d785503460f94a5b531/html5/thumbnails/20.jpg)
AcknowledgementAcknowledgement
We are grateful to the 2000 sponsors We are grateful to the 2000 sponsors of the UTAM consortium for the of the UTAM consortium for the financial supportfinancial support
![Page 21: Reverse-Time Migration For 3D SEG/EAGE Salt Model Yue Wang University of Utah.](https://reader035.fdocuments.in/reader035/viewer/2022062516/56649d785503460f94a5b531/html5/thumbnails/21.jpg)
Distance (km)Distance (km)
Dep
th (
km
)D
epth
(k
m)
22
00
00 4.54.5
P & V SchemeP & V Scheme
![Page 22: Reverse-Time Migration For 3D SEG/EAGE Salt Model Yue Wang University of Utah.](https://reader035.fdocuments.in/reader035/viewer/2022062516/56649d785503460f94a5b531/html5/thumbnails/22.jpg)
Distance (km)Distance (km)
Dep
th (
km
)D
epth
(k
m)
22
00
00 4.54.5
P & V RT SchemeP & V RT Scheme
![Page 23: Reverse-Time Migration For 3D SEG/EAGE Salt Model Yue Wang University of Utah.](https://reader035.fdocuments.in/reader035/viewer/2022062516/56649d785503460f94a5b531/html5/thumbnails/23.jpg)
How to use P & V?How to use P & V?2. Reverse-time migration using P & V:2. Reverse-time migration using P & V:
• Migrate pressure and particle Migrate pressure and particle velocity velocity simultaneouslysimultaneously by using by using wave-equation;wave-equation;
• Ghost is used for imaging;Ghost is used for imaging;• Non-flat water bottom;Non-flat water bottom;• Worked on 2D Model.Worked on 2D Model.