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{{publication  

{{publication  

  | image  = exploring-for-oil-and-gas-traps.png

  | image  = exploring-for-oil-and-gas-traps.png

  | series  = Treatise in Petroleum Geology

  | series  = Treatise in Petroleum Geology

  | title  = Exploring for Oil and Gas Traps

  | title  = Exploring for Oil and Gas Traps

'''Petroleum province''', a geographic term, is an area where petroleum occurs in commercial quantities. Basin is sometimes used geographically to mean petroleum province, such as the Williston Basin or Paris Basin. The Zagros fold belt could be a structural province or a petroleum province, not a basin.

'''Petroleum province''', a geographic term, is an area where petroleum occurs in commercial quantities. Basin is sometimes used geographically to mean petroleum province, such as the Williston Basin or Paris Basin. The Zagros fold belt could be a structural province or a petroleum province, not a basin.

A map showing differential thickness of sedimentary rocks is used to determine basins (thick), uplifts (thin), and fold belts (folded). These features are properly named provinces; if they contain petroleum, they are called petroleum provinces. The use of “basin” in this context is improper; it is also inconsistent with the petroleum system concept described below, which defines “basin” as the area into which sedimentary rocks are deposited.

A map showing differential thickness of sedimentary rocks is used to determine basins (thick), uplifts (thin), and fold belts (folded). These features are properly named provinces; if they contain petroleum, they are called petroleum provinces. The use of “basin” in this context is improper; it is also inconsistent with [[the petroleum system concept]] described below, which defines “basin” as the area into which sedimentary rocks are deposited.

==Sedimentary basin==

==Sedimentary basin==

In a play, the petroleum accumulations are commercial and undiscovered. In a petroleum system, the petroleum occurrences are already discovered.<ref name=ch03r7>Magoon, L., B., 1995, The play that complements the petroleum system—a new exploration equation: Oil & Gas Journal, vol. 93, no. 40, p. 85–87.</ref> Other differences are listed in the table above. Usually, a play is predicated without any particular petroleum system in mind. However, when a play is based on a particular petroleum system, it is called a complementary play.

In a play, the petroleum accumulations are commercial and undiscovered. In a petroleum system, the petroleum occurrences are already discovered.<ref name=ch03r7>Magoon, L., B., 1995, The play that complements the petroleum system—a new exploration equation: Oil & Gas Journal, vol. 93, no. 40, p. 85–87.</ref> Other differences are listed in the table above. Usually, a play is predicated without any particular petroleum system in mind. However, when a play is based on a particular petroleum system, it is called a complementary play.

The petroleum system concept is used two ways in exploration. By mapping a petroleum system, an explorationist learns new play concepts to add new oil or gas fields to the petroleum system. This relation is shown in the following equation:

[[The petroleum system concept]] is used two ways in exploration. By [[mapping a petroleum system]], an explorationist learns new play concepts to add new oil or gas fields to the petroleum system. This relation is shown in the following equation:

:<math>\mbox{PS}_{\rm total} = \mbox{PS}_{\rm partial} + \mbox{CP}_{1} + \mbox{CP}_{2} + \mbox{CP}_{3}</math>

:<math>\mbox{PS}_{\rm total} = \mbox{PS}_{\rm partial} + \mbox{CP}_{1} + \mbox{CP}_{2} + \mbox{CP}_{3}</math>

The petroleum system is also used as an analog to another less-explored petroleum system. For this approach to work, the explorationist must have a series of petroleum system case studies available for comparison.

The petroleum system is also used as an analog to another less-explored petroleum system. For this approach to work, the explorationist must have a series of petroleum system case studies available for comparison.

==References==

==References==