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3.2 Classification: four major types: Structural, Stratigraphic, Hydrodynamic and Combination
Figure 1: Nomenclature of a trap using a simple anticline as an example
Fold Traps Fold Traps (Compressional )
Examples of Compressional Fold Traps
Examples of compactional anticline traps
Fold Traps: Comparison of Major Types
Classification of stratigraphic type hydrocarbon trap
Classification of stratigraphic type hydrocarbon traps based on the scheme proposed by Rittenhouse (1972), shows that a major distinction can be made between stratigraphic traps which occur within normal conformable sequences
This distinction is rather arbitrary since there are some types, such as channels, that can occur both at unconformities and away from them
Figure 36, Schematic of barrier bars, showing interconnected bars forming blanket reservoir and one isolated bar set
Figure 37, Bar sandstone isopach map of Bisti field, Colorado
North-south cross-section A-Z of Bisti field using electric logs
Figure 39, Schematic cross-section through Middle Devonian reefs, Rainbow area, Alberta, Canada
Figure 45, Schematic of traps located above and below an unconformity
Figure 49 Schematic of traps below unconformity
Figure 55, Structural contours on top of 'G2' sandstone, Main Pass Block 35, offshore Louisian
Figure 56, Structural contours on top of Sadlerochit reservoir, Prudhoe Bay, Alaska
Figure 57 Southwest-northeast structural cross-section, Piper field, North Sea
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