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278 bytes removed ,  17:03, 6 February 2014
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'''System:''' [[Stratigraphic trap]]s
 
'''System:''' [[Stratigraphic trap]]s
 
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:'''Regime:''' Diagenetic traps
* '''Regime:''' Diagenetic traps
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::'''Class:''' Diagenetic reservoirs
 
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::Form where [[porosity]] is created as a result of local diagenetic processes such as dissolution or dolomitization.
<list-item>'''Class:''' Diagenetic reservoirs</list-item><list-item>Form where [[porosity]] is created as a result of local diagenetic processes such as dissolution or dolomitization.
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:::'''Subclass:''' Secondary dolomite reservoirs
 
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:::Form as a result of localized secondary dolomitization.
<list-item>'''Subclass:''' Secondary dolomite reservoirs</list-item><list-item>Form as a result of localized secondary dolomitization.</list-item><list-item>'''Subclass:''' Leached (secondary) porosity</list-item><list-item>Form as a result of localized leaching of nonreservoir-quality rock to create enhanced porosity and [[permeability]]. Common beneath unconformity surfaces.</list-item></list-item><list-item>'''Class:''' Diagenetic seals</list-item><list-item>Trap boundaries created by plugging original reservoir porosity and permeability by diagenetic cements or minerals.
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:::'''Subclass:''' Leached (secondary) porosity
 
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:::Form as a result of localized leaching of nonreservoir-quality rock to create enhanced porosity and [[permeability]]. Common beneath unconformity surfaces.
<list-item>'''Subclass:''' Secondary anhydrite barriers</list-item><list-item>Form as a result of secondary anhydrite precipitating in original pore spaces.</list-item><list-item>'''Subclass:''' Secondary clay barriers</list-item><list-item>Form as a result of secondary clay, commonly kaolinite, precipitating in original pore space.
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::'''Class:''' Diagenetic seals
 
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::Trap boundaries created by plugging original reservoir porosity and permeability by diagenetic cements or minerals.
<list-item>'''Style:''' Secondary pore-throat trap</list-item><list-item>Caused by a reduction in the size of 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 restraints but contain producible water.</list-item></list-item></list-item>
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:::'''Subclass:''' Secondary anhydrite barriers
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:::Form as a result of secondary anhydrite precipitating in original pore spaces.
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:::'''Subclass:''' Secondary clay barriers
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:::Form as a result of secondary clay, commonly kaolinite, precipitating in original pore space.
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::::'''Style:''' Secondary pore-throat trap
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::::Caused by a reduction in the size of 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 restraints but contain producible water.
    
==Discussion of diagenetic trap families==
 
==Discussion of diagenetic trap families==

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