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→Classes
! System || Regime || Class || Subclass || Style
! System || Regime || Class || Subclass || Style
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| rowspan = 4 | [[Stratigraphic trap]]s || rowspan = 4 | Diagenetic traps || rowspan = 2 | Diagenetic reservoirs; Form where [[porosity]] is created as a result of local [[Diagenesis|diagenetic processes]] such as [[dissolution]] or [[dolomitization]]. || colspan = 2 | Secondary dolomite reservoirs; Form as a result of localized secondary dolomitization.
| rowspan = 4 | [[Stratigraphic trap]]s || rowspan = 4 | Diagenetic traps || rowspan = 2 | Diagenetic reservoirs; Form where [[porosity]] is created as a result of local [[Diagenesis|diagenetic processes]] such as [[Carbonate_reservoir_models:_facies,_diagenesis,_and_flow_characterization#Dissolution_and_associated_processes|dissolution]] or [[Carbonate_reservoir_models:_facies,_diagenesis,_and_flow_characterization#Dolomitization|dolomitization]]. || colspan = 2 | Secondary dolomite reservoirs; Form as a result of localized secondary dolomitization.
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| colspan = 2 | Leached (secondary) [[porosity]]: Form as a result of localized leaching of nonreservoir-quality rock to create enhanced porosity and [[permeability]]. Common beneath [[unconformity]] surfaces.
| colspan = 2 | Leached (secondary) [[porosity]]: Form as a result of localized leaching of nonreservoir-quality rock to create enhanced porosity and [[permeability]]. Common beneath [[unconformity]] surfaces.
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| rowspan = 2 | Diagenetic seals: Trap boundaries created by plugging original reservoir porosity and permeability by diagenetic cements or minerals. || colspan = 2 | Secondary [[anhydrite]] barriers; Form as a result of secondary anhydrite precipitating in original pore spaces.
| rowspan = 2 | Diagenetic seals: Trap boundaries created by plugging original reservoir porosity and permeability by diagenetic cements or minerals. || colspan = 2 | Secondary [[anhydrite]] barriers; Form as a result of [[Carbonate_reservoir_models:_facies,_diagenesis,_and_flow_characterization#Evaporite_mineralization|secondary anhydrite precipitating]] in original pore spaces.
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| Secondary clay barriers; Form as a result of secondary clay, commonly [[kaolinite]], precipitating in original pore space. || Secondary pore-throat trap; Caused by a reduction in the size of [[Pore system fundamentals|pore-throat]] radii of reservoir rocks by depositional or diagenetic processes. These trap types typically have relatively porous units in the sealing facies that are impermeable to oil [[migration]] due to [[Capillary pressure|capillary restraints]] but contain producible water.
| Secondary clay barriers; Form as a result of secondary clay, commonly [[kaolinite]], precipitating in original pore space. || Secondary pore-throat trap; Caused by a reduction in the size of [[Pore system fundamentals|pore-throat]] radii of reservoir rocks by depositional or diagenetic processes. These trap types typically have relatively porous units in the sealing facies that are impermeable to oil [[migration]] due to [[Capillary pressure|capillary restraints]] but contain producible water.