Any locally orthogonal grid is suitable for one given reservoir
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Grid definition: Sugar box geometry
XY grid
XZ Cross Section
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3D View
Grid definition: Sugar box geometry
1 cell can communicate with
6 neighbours
6 neighbours
3 main flow directions
I , J , K‐1
I 1, J , K
Cell a
I J1 K
I , J‐1, K
I , J 1 , K
I‐1, J , K
I , J , K 1
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Cell b
Cell b
Grid definition: Corner Point Geometry
1 cell is defined by it’s corners
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Pillar lines
Horizontal axis can have variable
orientation
Grid definition : Corner Point Geometry
1 cell is defined by it’s corners
All corner points belong to pillar lines
1 cell can communicate with
6 neighbours
I , J , K‐1
I 1, J , K
Cell a
I J‐1
I , J
1, K
K
I , J 1 , K
I‐1, J , K
Pillar lines
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Cell b
I , J , K 1
Grid definition : Example
T2
T3
T5
T1
T4
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Reservoir layering: Quiz
Look at the following sentences.