Changes

==Discussion of diagenetic trap families==

==Discussion of diagenetic trap families==

Families of diagenetic traps based on genesis of the diagenetic processes that created or modified either the reservoir or the seal are somewhat difficult to establish because not all diagenetic processes are well understood and disagreements often exist about the cause of specific diagenetic processes that trapped hydrocarbons. Furthermore, almost all reservoirs and seals have undergone some degree of diagenesis since deposition, making diagenesis at least a secondary trapping element in many fields.

Families of diagenetic traps based on genesis of the diagenetic processes that created or modified either the reservoir or the seal are somewhat difficult to establish because not all diagenetic processes are well understood and disagreements often exist about the cause of specific diagenetic processes that trapped hydrocarbons. Furthermore, almost all reservoirs and seals have undergone some degree of [[diagenesis]] since deposition, making diagenesis at least a secondary trapping element in many fields.

The common occurrence of dolomitized reservoirs is a classic case in point. Dolomitized reefs and dolomitized tidal-flat carbonates are common oil and gas reservoirs. Although dolomitization was a critical element in creating commercial porosity and permeability in these reservoirs, exploration efforts usually focus on defining the original depositional fairway of these reservoirs, i.e., reefs or tidal flats. As a consequence, the primary trap classification of these reservoirs occurs under the depositional trap regime. For our purposes, diagenetic traps are those in which trap boundaries are created by diagenetic processes largely independent of the original depositional environment of reservoir or seal.

The common occurrence of dolomitized reservoirs is a classic case in point. Dolomitized reefs and dolomitized tidal-flat carbonates are common oil and gas reservoirs. Although [[Carbonate_reservoir_models:_facies,_diagenesis,_and_flow_characterization#Dolomitization|dolomitization]] was a critical element in creating commercial porosity and permeability in these reservoirs, exploration efforts usually focus on defining the original depositional fairway of these reservoirs, i.e., [[Carbonate_reservoir_models:_facies,_diagenesis,_and_flow_characterization#Carbonate_sediments_and_environments|reefs or tidal flats]]. As a consequence, the primary trap classification of these reservoirs occurs under the [[depositional trap regime]]. For our purposes, diagenetic traps are those in which trap boundaries are created by diagenetic processes largely independent of the original depositional environment of reservoir or seal.

==Families==

==Families==