Types of Petroleum Traps in Geology

Structural Trap

Structural Trap is a type of geological trap that is formed due to tectonic, gravitational, changes in the structure of the subsurface, and compactional processes. These changes lead to the formation of petroleum reservoirs by blocking the upward migration of hydrocarbons. Structural traps represent the majority of the world's discovered petroleum resources. Examples of structural traps include the fault trap, anticline trap, and salt dome trap.

Stratigraphy Trap

Stratigraphy Trap is formed due to the vertical and lateral variations in the texture, porosity, thickness, and lithology of the reservoir rock. Examples of stratigraphy traps include unconformity trap, reef trap, and lens trap.

Combination Trap

A Combination Trap is a trap that contains two or more trapping elements. This type of trap is a result of changes in lithology and tectonic processes. An example of a combination trap is a salt dome.

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