Migration Deconvolution Applied to Pemex Marine Seismic Data
description
Transcript of Migration Deconvolution Applied to Pemex Marine Seismic Data
Migration Deconvolution Migration Deconvolution Applied to Pemex Marine Applied to Pemex Marine
Seismic DataSeismic Data
Guoan Luo and Sergio ChGuoan Luo and Sergio Chaavez-Perezvez-Perez**
**Mexican Petroleum Institute (IMP)Mexican Petroleum Institute (IMP)
Feb 3, 2006Feb 3, 2006
OutlineOutline
• Objectives
• Migration Deconvolution
• PEMEX Data
• Ongoing and Future Work
OutlineOutline
• Objectives
• Migration Deconvolution
• PEMEX Data
• Ongoing and Future Work
ObjectivesObjectives
Apply MD to a rather complex marine data set
Speed MD up and make it a practical imaging tool
OutlineOutline
• Objectives
• Migration Deconvolution
• PEMEX Data
• Ongoing and Future Work
Migration image
Reflectivity
Migration
Modelingd=Lm
mmL LT
L d T mig
Г L LT
Migration Green’s Function
mm L LT -1
][ mig
Г L LT -1
][-1
L LT -1
][ L LT -1
][mL LT m
Migration deconvolution
mig
Deblurring Operator
OutlineOutline
• Objectives
• Migration Deconvolution
• PEMEX Data
• Ongoing and Future Work
20 m.
40 m.
60 m.
80 m.100 m.
200 m.300 m
.400 m
.500 m.
N
IB-102
YAXILTUN-1
ZAZIL HA-1
KAYAB-1 MOAN-1
KANTAAN-1
TABAY-1
TUNICH-101
CHACMOOL-1
CEEH-1
MALOOB-101KU-405
ZAAP-1
AKAL-2001
AKAL-1C-2011
TAKIN-1
NIX-1
KUKULKAN-1
TAKIN-101
LOC. HALACH-1
PECH-1
LOC. PETEN-1
LOC. MANAB-1
LOC.-LAKIN-1
1000 m
FRONTERA
NUEVOCAMPECHITO
CD. DEL CARMEN
TERMINOS LAGUNE
KAMBUL -1
BACAB-1
BOTS-1
LUM-1
SAM-1
POK-1EK BALAM-DL3
BALAM-1EK-101
Campeche BayArea
Location Map
Modified from Rojas et al
5 km
Mitra et al (2005)
Structural EvolutionMitra et al (2005)
Tim
e (s
)0
3.6
0 25X (km)
Migrated Section (inline 200)
Tim
e (s
)0
3.6
0 25X (km)
Migrated Section (inline 400)
Tim
e (s
)0
3.6
0 20Y (km)
Migrated Section (crossline 400)
Tim
e (s
)0
3.6
0 20Y (km)
Migrated Section (crossline 600)
OutlineOutline
• Objectives
• Migration Deconvolution
• PEMEX Data
• Ongoing and Future Work
XY
T
1001
801
1250
25mX25m 100mX100m
Data Cube Grid
Reference Point
Time slice at 1200 ms
Migration vs MD
X (km) 250 X (km) 250
Y (km
)0
20
MDMIG
X (km) 250 X (km) 250
Y (km
)0
20
Time slice at 1600 ms
Migration vs MD
MDMIG
X (km) 250 X (km) 250
Y (km
)0
20
Time slice at 2400 ms
Migration vs MD
MDMIG
0 25X (km)0 25X (km)
Tim
e (s
)0
3.6
MIG MDInline 200
Migration vs MD
0 25X (km)0 25X (km)
Tim
e (s
)0
3.6
MIG MDInline 400
Migration vs MD
MIG MDCrossline 400
Tim
e (s
)0
3.6
0 20Y (km)0 20Y (km)
Migration vs MD
MIG MDCrossline 600
Tim
e (s
)0
3.6
0 20Y (km)0 20Y (km)
Migration vs MD
MIG MDCrossline 200
Tim
e (s
)0
3.6
0 20Y (km)0 20Y (km)
Migration vs MD
MIG MDCrossline 800
0 20Y (km)0 20Y (km)
Tim
e (s
)0
3.6
Migration vs MD
Ongoing WorkOngoing WorkInitial 3D Poststack MD tests show
• Improved spatial resolution in time slices
• Improved structural definition in area of interest
Future WorkFuture Work
3D Prestack MD tests
Improve MD performance for complex velocity models
Make it a more practical imaging tool
AcknowledgementsAcknowledgements
2005 UTAM Sponsors
PEMEX (Petróleos Mexicanos)