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→Determining correct thickness
[[file:evaluating-top-and-fault-seal_fig10-18.png|300px|thumb|{{figure number|2}}Determining thickness.]]
[[file:evaluating-top-and-fault-seal_fig10-18.png|300px|thumb|{{figure number|2}}Determining thickness.]]
The correct thickness can be determined from trigonometry<ref name=ch10r71>Skerlec, G., M., 1990, SEALS: A short course for risking top seal and fault seal: Franklin, Pennsylvania, SEALS International, 600 p.</ref> or from a simple proportion, as illustrated in [[:file:evaluating-top-and-fault-seal_fig10-18.png|Figure 2]]. The base of the sand is plotted by using a simple proportion between the thickness in the well (H<sub>w</sub>) and the distance to the next mapped horizon in the well (D<sub>w</sub>), and between the thickness (H<sub>p</sub>) on the FPP and the distance to the next mapped horizon on the FPP (D<sub>p</sub>):
The correct thickness can be determined from trigonometry<ref name=ch10r71>Skerlec, G. M., 1990, SEALS: A short course for risking top seal and fault seal: Franklin, Pennsylvania, SEALS International, 600 p.</ref> or from a simple proportion, as illustrated in [[:file:evaluating-top-and-fault-seal_fig10-18.png|Figure 2]]. The base of the sand is plotted by using a simple proportion between the thickness in the well (H<sub>w</sub>) and the distance to the next mapped horizon in the well (D<sub>w</sub>), and between the thickness (H<sub>p</sub>) on the FPP and the distance to the next mapped horizon on the FPP (D<sub>p</sub>):
===Erroneous structural interpretation===
===Erroneous structural interpretation===