Changes

==Eh-pH graph==

==Eh-pH graph==

[[file:predicting-reservoir-system-quality-and-performance_fig9-49.png|300px|thumb|{{figure number|2}}Eh–pH diagram showing the approximate distribution of various types of subsurface fluids. Copyright: Shelley, 1985; courtesy W.H. Freeman and Co.]]

[[file:predicting-reservoir-system-quality-and-performance_fig9-49.png|300px|thumb|{{figure number|2}}Eh–pH diagram showing the approximate distribution of various types of subsurface fluids. Copyright: Shelley;<ref name=Shelley1985>Shelley, R. C., 1985, Elements of Petroleum Geology: San Francisco, W.H. Freeman, 449 p.</ref> courtesy W.H. Freeman and Co.]]

[[:file:predicting-reservoir-system-quality-and-performance_fig9-49.png|Figure 2]] is an Eh–pH diagram, showing the approximate distribution of various types of subsurface fluids.

[[:file:predicting-reservoir-system-quality-and-performance_fig9-49.png|Figure 2]] is an Eh–pH diagram, showing the approximate distribution of various types of subsurface fluids.