Petroleum system size

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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

The size of a petroleum system includes the total volume of all recoverable hydrocarbons that originated from a single pod of active source rock. This total volume is used to compare against other petroleum systems and to determine the generationaccumulation efficiency.

Volume of petroleum

The discovered hydrocarbons include shows, seeps, and accumulations of oil and gas. The size of a petroleum system is determined using a table such as the following for the fields in the Deer-Boar(.) system, with reserves of approximately 1.2 billion barrels (bblbarrels).

Field Name Discovery Date Reservoir Rock API GravityAPIAmerican Petroleum Institute) Cum. Oil Production (x106 bblbarrels) Remaining Reserves (x106 bblbarrels)
Big Oil 1954 Boar Ss 32 310 90
Raven 1956 Boar Ss 31 120 12
Owens 1959 Boar Ss 33 110 19
Just 1966 Boar Ss 34 160 36
Hardy 1989 Boar Ss 29 85 89
Lucky 1990 Boar Ss 15 5 70
Marginal 1990 Boar Ss 18 12 65
Teapot 1992 Boar Ss 21 9 34
Total 811 + 415

Generation-accumulation efficiency

Generation–accumulation efficiency is the ratio (expressed as a percentage) of the total volume of trapped (in-place) petroleum in the petroleum system to the total volume of petroleum generated from the pod of active source rock.

See also

External links

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