Changes

===Maturity difference example===

===Maturity difference example===

[[:file:oiloil-and-oilsource-rock-correlations_fig8-13.png|figure 9]] shows gas chromatograms of two oils from Wyoming. Both were sourced from the Permian Phosphoria Formation, but are reservoired in different fields. The bimodal distribution of ''n''-alkanes in the top oil is consistent with a lower level of maturity than that of the unimodal oil at the bottom. Comparison of these oils using gas chromatography for the purpose of oil–oil correlation must be done with caution because of the maturity differences.

[[:file:oiloil-and-oilsource-rock-correlations_fig8-13.png|Figure 9]] shows gas chromatograms of two oils from Wyoming. Both were sourced from the Permian Phosphoria Formation, but are reservoired in different fields. The bimodal distribution of ''n''-alkanes in the top oil is consistent with a lower level of maturity than that of the unimodal oil at the bottom. Comparison of these oils using gas chromatography for the purpose of oil–oil correlation must be done with caution because of the maturity differences.

[[file:oiloil-and-oilsource-rock-correlations_fig8-14.png|thumb|{{figure number|10}}. Copyright: Unocal.]]

[[file:oiloil-and-oilsource-rock-correlations_fig8-14.png|thumb|{{figure number|10}}. Copyright: Unocal.]]