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Line 45: − − '''Regime:''' Fracture trap<br> − Lateral boundaries of the trap are provided by change from fractured reservoir to unfractured or less fractured rock or by change from open, permeable fractures to cement-filled or narrow-aperture, low-[[permeability]] fractures. − :'''Class:''' Extension fracture trap − :Dominant reservoir fractures are extension fractures. − ::'''Subclass:''' Parallel fractures − ::Open fractures in a fractured reservoir, predominantly unidirectional in both strike and dip. − :::'''Style:''' Mineralized fracture − :::Partially or totally mineralized by postfracture cements, typically calcite, gypsum, or silica. − :::'''Style:''' Nonmineralized fracture − :::Contains no postfracture cements or minerals. − ::'''Subclass:''' Intersecting fractures − ::Open fractures in fractured reservoir of several intersecting sets, either along fracture strike or fracture dip. − :::'''Style:''' Mineralized fracture − :::'''Style:''' Nonmineralized fracture − :'''Class:''' Shear fracture trap − :The dominant reservoir fractures are shear fractures. − ::'''Subclass:''' Parallel fractures − :::'''Style:''' Mineralized fracture − :::'''Style:''' Nonmineralized fracture − ::'''Subclass:''' Intersecting fractures − :::'''Style:''' Mineralized fracture − :::'''Style:''' Nonmineralized fracture</list-item></list-item> − :'''Class:''' Complex fracture trap − :Dominant reservoir fractures are complex fractures. − ::'''Subclass:''' Parallel fractures − :::'''Style:''' Mineralized fracture − :::'''Style:''' Nonmineralized fracture − ::'''Subclass:''' Intersecting fractures − :::'''Style:''' Mineralized fracture − :::'''Style:''' Nonmineralized fracture
→Outline
| ''Nonmineralized fracture''
| ''Nonmineralized fracture''
|}
|}
Based on the interpretation of the genetic causes of fracture traps, two fracture trap families are recognized: tectonic and nontectonic.
Based on the interpretation of the genetic causes of fracture traps, two fracture trap families are recognized: tectonic and nontectonic.