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Pc curves and saturation profiles (view source)
Revision as of 21:29, 17 June 2014
, 21:29, 17 June 2014→Pore throat size and saturation profiles
==Pore throat size and saturation profiles==
==Pore throat size and saturation profiles==
[[file:predicting-reservoir-system-quality-and-performance_fig9-22.png|thumb|{{figure number|1}}See text for explanation.]]
[[file:predicting-reservoir-system-quality-and-performance_fig9-22.png|300px|thumb|{{figure number|1}}Example reservoir cross section.]]
Water in the pore throats of rocks with macroporosity offers little capillary resistance to migrating hydrocarbons compared with the pore throats of rocks with microporosity. As a result, oil and gas migrate through a rock with macroporosity with minimal buoyancy pressure, i.e., hydrocarbon column. Macropore reservoirs have little or no saturation transition zone.
Water in the pore throats of rocks with macroporosity offers little capillary resistance to migrating hydrocarbons compared with the pore throats of rocks with microporosity. As a result, oil and gas migrate through a rock with macroporosity with minimal buoyancy pressure, i.e., hydrocarbon column. Macropore reservoirs have little or no saturation transition zone.