3D Seismic Modeling of a Reservoir

1
3D Seismic Modeling of a Reservoir
2
3D Seismic Reservoir Modeling
Y
Array1 1-component surface detectors
X
Array 2 4-component bottom detectors
Array 3 3-component down-hole detectors
Z
3
Model Dimensions

• Proposed dimensions for seismic modeling of
  the instrumented oil reservoir
• Array 1, 1-component surface detectors
• 400 receivers on x-axis, 200 on y-axis,
  dxdy10m, 1000 samples
• Array 2, 4-component bottom detectors
• 200 receivers on x-axis, 200 on y-axis,
  dxdy10m, 1000 samples
• Array 3, 3-component down-hole detectors
• 100 receivers on z-axis, 20 wells both on xy
  axes, 1000 samples
• Proposed dimensions subject to change
  depending on available memory and computation time

4
Surface array
dx10 m
Y
200 detectors
dy10 m
400 detectors
X
400 detectors in X direction, dx10 m 200
detectors in Y direction, dy10 m All detectors
are 1-component (pressure)
Z
5
4-component bottom array
Y
200 detectors in X direction, dx10 m 200
detectors in Y direction, dy10 m All detectors
are 4-component
X
dy10 m
Z
dx10 m
6
3-component down-hole array
Well
Y
20 wells in X direction, dx100 m 20 wells in Y
direction, dy100 m 100 detectors in Z direction
in each well,dz10 m All detectors are 3-component
dz5 m
X
100 detectors
20 wells
20 wells
Z
dy100 m
dx100 m
7
Required Storage

• Array 1, 1-component surface detectors
• 400 receivers on x-axis, 200 on y-axis,
  dxdy10m, 1000 samples (4 bytes each), 1
  component, TOTAL200x400x1000x4x1320 Mb
• Array 2, 4-component bottom detectors
• 200 receivers on x-axis, 200 on y-axis,
  dxdy10m, 1000 samples (4 bytes each), 4
  components, TOTAL200x200x1000x4x4640 Mb
• Array 3, 3-component down-hole detectors
• 100 receivers on z-axis, 20 wells both on xy
  axes, 1000 samples (4 bytes each), 3 components,
  TOTAL100x20x20x1000x4x3480 Mb
• TOTAL PER SHOT 320 Mb 640 Mb 480 Mb 1.44
  Gb
• TOTAL PER LINE (200 shots) 288 Gb
• TOTAL PER SURVEY 11 lines x 288 Gb 3,168 Gb

TOTAL 3.168 Tb