WorksheetsQuiz: Geological Traps and Reservoirs
Total questions: 15
Worksheet time: 8mins
What is the primary role of seals in petroleum geology?
Enhancing reservoir pressure
Facilitating hydrocarbon extraction
Preventing vertical migration of hydrocarbons
Creating structural traps
Which of the following is NOT a key characteristic of a good seal?
High Permeability
Regional Continuity
Good ductility
Low Permeability
Capillary entry pressure is essential for evaluating a seal's:
Thickness
Color
Sealing capability
Porosity
Juxtaposition seals are formed by the juxtaposition of different lithologies, creating:
Permeable barrier
Impermeable barrier
Vertical migration
Hydrocarbon accumulation
Porosity refers to the:
Rock's ability to transmit fluids
Percentage of pore space in a rock
Force required for fluid entry
Thickness of the seal
Which diagenetic process involves the dissolution of minerals at contact points under pressure?
Compaction
Pressure solution
Cementation
Dissolution
What is the common range of permeability for sandstones?
0.0001 - 0.1 mD
0.1 - 1,000 mD
1 - 10,000 mD
5% - 30%
What impact does cementation have on permeability?
Increases permeability
Decreases permeability
No impact on permeability
Increases porosity
Darcy's Law is used to calculate:
Capillary entry pressure
Porosity
Permeability
Compaction
What are the two main classification of traps in petroleum geology?
Structural traps and sedimentary traps
Stratigraphic traps and diagenetic traps
Anticlines and fault traps
Structural traps and stratigraphic traps
What is the primary mechanism behind structural traps?
Variations in rock layers
Igneous processes
Deformation in the Earth's crust
Sedimentary processes
Which diagenetic process involves the removal of minerals from a rock?
Compaction
Pressure Solution
Cementation
Dissolution
What does reservoir quality refer to?
The ability of a rock to store and transmit hydrocarbons
The size of the hydrocarbon reservoir
The number of hydrocarbons in a reservoir
The depth of the hydrocarbon reservoir
Which of the following is an example of a structural trap?
Pinchouts
Reefs
Anticlines
Unconformities
What is the equation representing Darcy's Law for fluid flow through porous media?
Q = kAΔp / μl
Q = μl / kAΔp
Q = kΔp / μlA
Q = AΔp / kμl
