--> Abstract: Petroleum Geology and Prospectivity of the Upper Jurassic of Iraq and Comparison to Adjacent Areas, by Grenville Lunn, John Scott, and Augustus O. Wilson; #90072 (2007)

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Petroleum Geology and Prospectivity of the Upper Jurassic of Iraq and Comparison to Adjacent Areas

Grenville Lunn1, John Scott2, and Augustus O. Wilson3
1Petroleum Geological Analysis Ltd, Glossop, United Kingdom
2PGA Consultants Pty Ltd, Maida Vale, WA, Australia
3Saker Geological Services, Green Cove Springs, FL

The Upper Jurassic of Iraq is highly prospective but poorly explored. Three distinct depositional settings are present: 1) A shallow marine shelf setting represented by the Najmah Formation carbonates, partly comparable to the Upper Jurassic carbonate reservoirs of Saudi Arabia. 2) An intrashelf basin setting characterised by condensed, very organic-rich source facies capped by thin algal-microbial carbonates of the Naokelekan Formation, partly comparable to the “Najmah” reservoir of Kuwait. 3) Evaporitic facies of the Gotnia Formation which provide a seal. The Upper Jurassic intrashelf basin and associated plays extend from northwestern Iraq to the Gulf region. To the west the seal and then the reservoir are progressively cut out by Early Cretaceous erosion or non-deposition.
The paper illustrates the Upper Jurassic facies, their petroleum significance, the basin architecture and stratigraphic relationships in Iraq, with comparison to Saudi Arabia and Kuwait.

 

AAPG Search and Discovery Article #90072 © 2007 AAPG and AAPG European Region Conference, Athens, Greece