Changes

==Carbonate reservoir models==

==Carbonate reservoir models==

The key to describing the geometry and petrophysical properties of carbonate reservoirs lies in combining sedimentary and diagenetic descriptions, geological models, rock fabric analysis, and petrophysical rock properties. While each hydrocarbon accumulation has a unique geometry, certain combinations of sedimentation, diagenesis, and pore fabric seem to result in a similar distribution of petrophysical rock properties. Four such reservoir models are (1) the upward-shoaling cementation and compaction model, (2) the subtidal-supratidal dolomitization and sulfate emplacement model, (3) the karst-collapse model, and (4) the geological reef model.

The key to describing the geometry and petrophysical properties of carbonate reservoirs lies in combining sedimentary and diagenetic descriptions, geological models, rock fabric analysis, and petrophysical rock properties. While each hydrocarbon accumulation has a unique geometry, certain combinations of sedimentation, [[diagenesis]], and pore fabric seem to result in a similar distribution of petrophysical rock properties. Four such reservoir models are (1) the [[upward-shoaling]] [[Postaccumulation cementation|cementation]] and [[Reservoir quality#Compaction|compaction]] model, (2) the [[subtidal]]-[[supratidal]] [[dolomitization]] and [[sulfate]] emplacement model, (3) the [[karst]]-collapse model, and (4) the geological [[reef]] model.

===Upward-shoaling cementation and compaction reservoir model===

===Upward-shoaling cementation and compaction reservoir model===