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→Example: u0 contours
===Example: u<sub>0</sub> contours===
===Example: u<sub>0</sub> contours===
[[file:formation-fluid-pressure-and-its-application_fig5-38.png|thumb|{{figure number|1}}. Copyright: Dahlberg, 1994; courtesy Springer-Verlag.]]
[[file:formation-fluid-pressure-and-its-application_fig5-38.png|300px|thumb|{{figure number|1}}. Copyright: Dahlberg, 1994; courtesy Springer-Verlag.]]
The map in [[:file:formation-fluid-pressure-and-its-application_fig5-38.png|Figure 1]] shows oil in a hydrodynamic trap (shaded area). No oil could be trapped in the structure, represented by solid contours, without the aid of hydrodynamics. The bold contours with long dashes represent the isopotential of oil (labeled U<sub>0</sub>). To make U<sub>o</sub> contours, follow this procedure.
The map in [[:file:formation-fluid-pressure-and-its-application_fig5-38.png|Figure 1]] shows oil in a hydrodynamic trap (shaded area). No oil could be trapped in the structure, represented by solid contours, without the aid of hydrodynamics. The bold contours with long dashes represent the isopotential of oil (labeled U<sub>0</sub>). To make U<sub>o</sub> contours, follow this procedure.
{| class = "wikitable"
{| class = "wikitable"
|-
|-
! Step
! Step || Action
|-
|-
| 1
| 1 || Subtract the structure of the target formation (Z) from the isopotential of water (V<sub>o</sub> ).
| Subtract the structure of the target formation (Z) from the isopotential of water (V<sub>o</sub> ).
|-
|-
| 2
| 2 || Plot the remainder at the intersection of the two sets of contours.
| Plot the remainder at the intersection of the two sets of contours.
|-
|-
| 3
| 3 || Draw contours of the values.
| Draw contours of the values.
|}
|}