Most [[Stratigraphic trap|stratigraphic]] and [[combination trap]]s require top, lateral, and bottom [[seal]]s to retain a hydrocarbon [[accumulation]]. [[:file:exploring-for-stratigraphic-traps_fig21-1.png|Figure 1]] compares typical [[Structural trap system|structural]] and stratigraphic traps and shows why bottom seals are more important to stratigraphic traps in determining accumulation size. | Most [[Stratigraphic trap|stratigraphic]] and [[combination trap]]s require top, lateral, and bottom [[seal]]s to retain a hydrocarbon [[accumulation]]. [[:file:exploring-for-stratigraphic-traps_fig21-1.png|Figure 1]] compares typical [[Structural trap system|structural]] and stratigraphic traps and shows why bottom seals are more important to stratigraphic traps in determining accumulation size. |