Usgs Assessment: Undiscovered Conventional Oil and Gas Resources of North Africa, 2012

Using a geology-based assessment methodology, the U.S. Geological Survey estimated means of 19 billion barrels of technically recoverable undiscovered conventional oil and 370 trillion cubic feet of undiscovered conventional natural gas resources in 8 geologic provinces of North Africa.

Eight priority geologic provinces were assessed in this study, which represents a reassessment of North Africa last published in 2000 (U.S. Geological Survey World Energy Assessment Team, 2000). The eight geologic provinces include (1) Nile Delta Basin; (2) Sirte Basin; (3) Pelagian Basin; (4) Trias/Ghadames Basin; (5) Hamra Basin; (6) Illizi Basin; (7) Grand Erg/Ahnet Basin; and (8) Essaouira Basin (fig. 1). Resource estimates for the Nile Delta, Sirte, and Pelagian Basin provinces were published previously (Kirschbaum and others, 2010; Whidden and others, 2011), but are included here for a more complete view of undiscovered conventional oil and gas resources across North Africa.

The USGS assessed undiscovered conventional oil and gas resources in 18 AUs within eight geologic provinces, with the following estimated mean totals: (1) for conventional oil resources, 18,618 million barrels of oil (MMBO), with a range from 6,846 to 37,460 MMBO; (2) for undiscovered conventional
gas, 370,375 billion cubic feet of gas (BCFG), with a range from 149,541 to 712,430 BCFG; and (3) for natural gas liquids (NGL), 12,553 MMBNGL, with a range from 4,809 to 24,785 MMBNGL.

Of the mean undiscovered conventional oil resource of 18,618 MMBO, about 41 percent (7,557 MMBO) is estimated to be in the Offshore Salt Structures AU, offshore Morocco. Other significant AUs for potential undiscovered oil include the Offshore Sirte Basin AU (2,267 MMBO), Onshore Sirte Carbonate-Clastic AU (1,278 MMBO), and the Berkine Paleozoic and Mesozoic Reservoirs AU (1,839 MMBO) of the Trias/Ghadames Basin. Of the mean undiscovered gas resource of 370,375 BCFG, about 59 percent (217,313 BCFG) is estimated to be in the Nile Cone AU. Other significant AUs for potential undiscovered gas resources include the Offshore Salt Structures AU of Morocco (45,208 BCFG), the Offshore Sirte Basin AU
(22,637 BCFG), and the Gourara Paleozoic Reservoirs AU (15,559 BCFG) of the Grand Erg/Ahnet Basin Province. These four AUs encompass about 81 percent of the undiscovered gas resource.

http://pubs.usgs.gov/fs/2012/3147/
http://pubs.usgs.gov/fs/2012/3147/FS12-3147.pdf

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Нефть
18,618 million barrels of oil = 2.54 млрл. т
range from 6,846 to 37,460 MMBO = 0.93-5.1 млрл. т
Наибольшие запасы нефти прогнозируют в Essaouira Basin Province, Paleozoic-Mesozoic Composite TPS (шельф Марокко)

Газ
370,375 billion cubic feet of gas (BCFG) = 10.4 трлн. куб.м
range from 149,541 to 712,430 BCFG = 4.2-19.9 трлн. куб.м
По средней оценке 2/3 ресурсов газа в дельте Нила

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