Petroleum Systems

Question 1

A natural system that encompasses a pod of active source rock and all related oil and gas, and that includes all the geologic elements and processes essential for the existence of a hydrocarbon accumulation.

Answer 1

Petroleum System

Question 2

This term emphasizes that there is a set of interdependent elements and processes that combine to create any hydrocarbon accumulation. An understanding of this combination is a useful aid modern petroleum exploration programs.

Answer 2

System

Question 3

What are the essential elements of a system?

Answer 3

Source Rock
Reservoir Rock
Seal Rock
Overburden Strata

Question 4

A type of petroleum system in which the hydrocarbons were generated in other ways (e.g. by an igneous intrusion acting as a heat source to generate hydrocarbon from a source otherwise at too shallow depth.

Answer 4

Atypical

Question 4

What are the processes involved in petroleum accumulation?

Answer 4

Trap Formation
Generation-Migration-Accumulation

Question 4

A hypothetical cross-section of the system. Generally described as the point in time that best depicts the generation-migration-accumulation of most of the hydrocarbon involved.

Answer 4

Critical Moment

Question 4

It is a petroleum system where the source rock were thermally matured due to deep burial by the overburden strata. Most systems around the world fall into this group.

Answer 4

Typical

Question 4

Ways on how to classify a petroleum systems.

Answer 4

Classification based on reservoir rock, kerogen type, migration drainage, and entrapment style.

Question 4

The area defined by a line that circumscribes the pod of active source rock and all of the discovered seeps, traps, and accumulation of petroleum that originated from that pod.

Answer 4

Geographic Extent

Question 4

The period over which the petroleum itself may be preserved, modified or destroyed. It includes opportunities for accumulations to escape due to changes in geometry with renewed earth movements, or for oil to be degraded by bacteria and other processes associated with uplift and erosion events.

Answer 4

Preservation Time

Question 4

It is responsible for burial of the source rock to a depth sufficient for petroleum to be generated. It is as essential as part of the system as the source-reservoir-trap combination itself.

Answer 4

Overburden Strata

Question 4

It embraces the source, reservoir, and seal beds, and also the overburden strata between the source and the ground surface.

Answer 4

Stratigraphic Extent

Question 4

What are the two (2) types of petroleum system?

Answer 4

Typical
Atypical