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The AAPG/Datapages Combined Publications Database
Houston Geological Society Bulletin
Abstract
Abstract: Hydrocarbon Potential of Benoud Trough, Algeria
By
Anadarko Petroleum Corporation, Houston
The Benoud Trough is a foreland basin located on the south side of the Saharan Atlas Mountains, northwestern Algeria. The sedimentary column of the Benoud Trough is at least 4000 m thick and consists of a nearly complete section of Paleozoic and Mesozoic rocks. It also contains several hundred meters of upper Cenozoic strata. Interpretations of several regional seismic sections have been integrated with data from the dozen existing wellbores in the Benoud Trough study area, which covers an area in size similar to that of Oklahoma. From these interpretations, basin-wide structure and interval isopach maps were constructed to depict the basin architecture and tectonic history. Geochemical source rock analysis and AFTA studies were used in the modeling of the hydrocarbon generative history of the basin.
Analysis and mapping of reservoir and seal
rocks defined the effective areal limits of
these critical factors. A critical events chart
was constructed that illustrates the most
likely grouping of sources, seals, reservoirs,
trap ages, and migration events into viable
plays by means of their chronological interrelationship.
In this manner, four promising
plays are suggested. These are the
Upper and Lower Devonian sandstone
plays, and the Carboniferous and Triassic
sandstone plays. The spatial relationships
of source,
seal
, reservoir, trap and migration
pathways were integrated to produce
fairway maps for each of these Benoud
Trough plays.
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