Changes

* Erroneous structural interpretations

* Erroneous structural interpretations

==Assuming cross leakage==

===Assuming cross leakage===

We must not assume that a fault always cross-leaks at sand/sand juxtapositions. Cross seal is common. If the fault is cross sealing, it is impossible to identify JLLPs from fault plane profiles. Seal behavior can be predicted using quantitative fault seal analysis (refer to Subsection A3).

We must not assume that a fault always cross-leaks at sand/sand juxtapositions. Cross seal is common. If the fault is cross sealing, it is impossible to identify JLLPs from fault plane profiles. Seal behavior can be predicted using quantitative fault seal analysis (refer to Subsection A3).

==Plotting bed thickness incorrectly==

===Plotting bed thickness incorrectly===

if all bed boundaries are taken from mapped surfaces, there are no problems. Because this is almost never the case, problems arise when unmapped bed boundaries, including bed bases, are plotted on fault plane profiles by “isopaching down” from mapped surfaces. Errors arise due to confusion regarding apparent thickness. Errors in bed thickness lead to mistaken identity of what is juxtaposed along the fault as well as mistaken leak points and percent fill.

if all bed boundaries are taken from mapped surfaces, there are no problems. Because this is almost never the case, problems arise when unmapped bed boundaries, including bed bases, are plotted on fault plane profiles by “isopaching down” from mapped surfaces. Errors arise due to confusion regarding apparent thickness. Errors in bed thickness lead to mistaken identity of what is juxtaposed along the fault as well as mistaken leak points and percent fill.

==Construction methods==

===Construction methods===

[[file:evaluating-top-and-fault-seal_fig10-17.png|thumb|300px|{{figure number|1}}Bed cutoffs on the fault plane and projected onto a vertical fault plane profile.]]

[[file:evaluating-top-and-fault-seal_fig10-17.png|thumb|300px|{{figure number|1}}Bed cutoffs on the fault plane and projected onto a vertical fault plane profile.]]