Petroleum system identification

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Exploring for Oil and Gas Traps
Series Treatise in Petroleum Geology
Part Traps, trap types, and the petroleum system
Chapter Petroleum systems
Author Leslie B. Magoon, Edward A. Beaumont
Link Web page
Store AAPG Store

Before a petroleum system can be investigated, it must be identified as being present.

Petroleum system identification

To identify a petroleum system, the explorationist must find some petroleum. Any quantity of petroleum, no matter how small, is proof of a petroleum system. An oil or gas seep, a show of oil or gas in a well, or an oil or gas accumulation demonstrates the presence of a petroleum system.

Procedure: identifying a petroleum system

The list below outlines the steps required to identify a petroleum system.

  1. Find some indication of the presence of petroleum.
  2. Determine the size of the petroleum system by the following series of steps:
    • Group genetically related occurrences of petroleum by using geochemical characteristics and stratigraphic occurrences.
    • Identify the source using petroleum-source rock correlations.
    • Locate the general area of the pod of active source rock responsible for the genetically related petroleum occurrences.
    • Make a table of accumulations to determine the amount of hydrocarbons in the petroleum system and which reservoir rock contains the most petroleum.
  3. Name the petroleum system

See also

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