Undiscovered conventional oil and gas resources were
assessed within a total petroleum system of the Illizi Province
(2056) as part of the U.S. Geological Survey World Petroleum
Assessment 2000. The Illizi Province is in eastern Algeria and a
small portion of western Libya. The province and its total petroleum
system coincide with the Illizi Basin. Although several
total petroleum systems may exist within the Illizi Province,
only one ?composite? total petroleum system is identified. This
total petroleum system comprises a single assessment unit.
The main source rocks are the Silurian Tanezzuft Formation
(or lateral equivalents) and Middle to Upper Devonian mudstone.
The total petroleum system was named after the oldest
major source rock and the basin in which it resides.
The estimated means of the undiscovered conventional
petroleum volumes in the Tanezzuft-Illizi Total Petroleum
System are 2,814 million barrels of oil (MMBO), 27,785 billion
cubic feet of gas (BCFG), and 873 million barrels of natural gas
Additional publication details
USGS Numbered Series
Total petroleum systems of the Illizi Province, Algeria and Libya; Tanezzuft-Illizi