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==Example: fault controlling migration==

==Example: fault controlling migration==

[[file:evaluating-top-and-fault-seal_fig10-32.png|thumb|{{figure number|1}}See text for explanation.]]

[[file:evaluating-top-and-fault-seal_fig10-32.png|thumb|{{figure number|1}}How a fault can control migration pathways across a fault.]]

[[:file:evaluating-top-and-fault-seal_fig10-32.png|Figure 1]] illustrates how completely a fault can control [[migration pathways]] across a fault. In this fault plane profile of a fault in a Gulf Coast field, SGR was calculated and contoured only on areas of sand/sand juxtaposition. Areas of sand/shale juxtaposition are uncolored. No hydrocarbon migration will occur across these uncolored regions or across the sand/shale juxtapositions with low SGRs (blue-purple). These high SGR areas are essentially holes for fluid migration in the fault plane. It will only occur across the areas of sand/sand juxtaposition with high SGRs (red-orange).

[[:file:evaluating-top-and-fault-seal_fig10-32.png|Figure 1]] illustrates how completely a fault can control [[migration pathways]] across a fault. In this fault plane profile of a fault in a Gulf Coast field, SGR was calculated and contoured only on areas of sand/sand juxtaposition. Areas of sand/shale juxtaposition are uncolored. No hydrocarbon migration will occur across these uncolored regions or across the sand/shale juxtapositions with low SGRs (blue-purple). These high SGR areas are essentially holes for fluid migration in the fault plane. It will only occur across the areas of sand/sand juxtaposition with high SGRs (red-orange).