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)
