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→Fault planes
===Fault planes===
===Fault planes===
[[Faults]] are special surfaces whose traces will show on structure contour maps ([[:file:subsurface-maps_fig1.png|Figures 1]] and [[:file:subsurface-maps_fig2.png|2]]). Faults form bounding surfaces for some reservoirs, and sufficient well control might exist to contour map the fault surface itself. Projections of subsurface data into the plane of the fault are also useful “maps” for reservoir development, but are more appropriately described as [[Geological cross sections|cross sections]]. (For details of construction of fault plane maps, see [[Conversion of well log data to subsurface stratigraphic and structural information]].)
[[Fault]]s are special surfaces whose traces will show on structure contour maps ([[:file:subsurface-maps_fig1.png|Figures 1]] and [[:file:subsurface-maps_fig2.png|2]]). Faults form bounding surfaces for some reservoirs, and sufficient well control might exist to contour map the fault surface itself. Projections of subsurface data into the plane of the fault are also useful “maps” for reservoir development, but are more appropriately described as [[Geological cross sections|cross sections]]. (For details of construction of fault plane maps, see [[Conversion of well log data to subsurface stratigraphic and structural information]].)
[[file:subsurface-maps_fig3.png|thumb|left|{{figure number|3}}Map of pressure response to pattern flood, Judy Creek field, western Canada, 1974 and 1975. Contour interval is 2750 kPa. (After Jardine et al.)<ref name=pt06r58>Jardine, D., Wilshart, J. W., 1987, Carbonate reservoir description, in Tillman, R. W., Weber, K. J., eds. Reservoir Sedimentology: SEPM Special Publication 40, p. 129–152.</ref>]]
[[file:subsurface-maps_fig3.png|thumb|left|{{figure number|3}}Map of pressure response to pattern flood, Judy Creek field, western Canada, 1974 and 1975. Contour interval is 2750 kPa. (After Jardine et al.)<ref name=pt06r58>Jardine, D., Wilshart, J. W., 1987, Carbonate reservoir description, in Tillman, R. W., Weber, K. J., eds. Reservoir Sedimentology: SEPM Special Publication 40, p. 129–152.</ref>]]