Undiscovered conventional oil and gas resources were
assessed within total petroleum systems of the Trias/Ghadames
Province (2054) as part of the U.S. Geological Survey World
Petroleum Assessment 2000. The Trias/Ghadames Province is
in eastern Algeria, southern Tunisia, and westernmost Libya.
The province and its total petroleum systems generally coincide
with the Triassic Basin. The province includes the Oued Mya
Basin, Melrhir Basin, and Ghadames (Berkine) Basin. Although
several total petroleum systems may exist within each of these
basins, only three ?composite? total petroleum systems were
identified. Each total petroleum system occurs in a separate
basin, and each comprises a single assessment unit.
The main source rocks are the Silurian Tanezzuft Formation
(or lateral equivalents) and Middle to Upper Devonian mudstone.
Maturation history and the major migration pathways
from source to reservoir are unique to each basin. The total
petroleum systems were named after the oldest major source
rock and the basin in which it resides.
The estimated means of the undiscovered conventional
petroleum volumes in total petroleum systems of the Trias/Ghadames
Province are as follows:
[MMBO, million barrels of oil; BCFG, billion cubic feet of gas; MMBNGL, million
barrels of natural gas liquids]
Total Petroleum System MMBO BCFG MMBNGL
Tanezzuft-Oued Mya 830 2,341 110
Tanezzuft-Melrhir 1,875 4,887 269
Tanezzuft-Ghadames 4,461 12,035 908
Additional publication details
USGS Numbered Series
Total petroleum systems of the Trias/Ghadames Province, Algeria, Tunisia, and Libya; the Tanezzuft-Oued Mya, Tanezzuft-Melrhir, and Tanezzuft-Ghadames