Changes

==Example: Hudson field==

==Example: Hudson field==

[[file:evaluating-top-and-fault-seal_fig10-30.png|thumb|{{figure number|1}}After <ref name=ch10r36 />. Copyright: Geological Society of London.]]

[[file:evaluating-top-and-fault-seal_fig10-30.png|thumb|{{figure number|1}}Well located on the crest of an obvious structural high. After <ref name=ch10r36 />. Copyright: Geological Society of London.]]

The Hudson field, North Sea, is an excellent example of how faults control migration pathways and charge.<ref name=ch10r36>Hardman, R., F., P., Booth, J., E., 1991, [http://sp.lyellcollection.org/content/56/1/1.abstract The significance of normal faults in the exploration and production of North Sea hydrocarbons], in Roberts, A., M., Yielding, G., Freeman, B., eds., The Geometry of Normal Faults: London, Geological Society of London, p. 1–16.</ref> The map and cross section in [[:file:evaluating-top-and-fault-seal_fig10-30.png|Figure 1]] show that the first well, 210/24a-l, was located on the crest of an obvious structural high. This well encountered water-wet Brent Group sands. A second well on the flank, 210/24a-2, encountered oil shows suggestive of a local [[stratigraphic trap]]. Thirteen years after the initial well, the 210/24a-3 well discovered the Hudson field: a fault-dependent trap.

The Hudson field, North Sea, is an excellent example of how faults control migration pathways and charge.<ref name=ch10r36>Hardman, R., F., P., Booth, J., E., 1991, [http://sp.lyellcollection.org/content/56/1/1.abstract The significance of normal faults in the exploration and production of North Sea hydrocarbons], in Roberts, A., M., Yielding, G., Freeman, B., eds., The Geometry of Normal Faults: London, Geological Society of London, p. 1–16.</ref> The map and cross section in [[:file:evaluating-top-and-fault-seal_fig10-30.png|Figure 1]] show that the first well, 210/24a-l, was located on the crest of an obvious structural high. This well encountered water-wet Brent Group sands. A second well on the flank, 210/24a-2, encountered oil shows suggestive of a local [[stratigraphic trap]]. Thirteen years after the initial well, the 210/24a-3 well discovered the Hudson field: a fault-dependent trap.