The Jurassic succession of the Arabian Plate is renowned for its rich petroleum systems, with Upper Jurassic reservoir rocks producing a substantial share of global oil and gas. This chapter examines the stratigraphy, tectonic development, and depositional conditions of Jurassic sediments throughout Arabia, encompassing Saudi Arabia, Qatar, Kuwait, Iraq, and the United Arab Emirates. The chapter opens with an overview of the Jurassic stratigraphic framework, highlighting the difficulties in regional connections across various outcrops and borehole data. The tectonic evolution is examined through the division of the Gondwana and Laurasia supercontinents and the formation of the Neo-Tethys Sea. This tectonic activity shaped the formation of large shallow carbonate platforms throughout Arabia, resulting in diverse depositional regimes governed by regional arches and basins, including the Qatar-Fars Arch and the Gotnia Basin. The chapter elucidates the impacts of climatic and sea-level fluctuations on sediment deposition, forming organic-rich source rocks, carbonate reservoirs, and evaporite seals. The chapter examines the stratigraphic units, particularly the productive Middle and Upper Jurassic formations (Hanifa, Jubaila, and Arab) that contain substantial hydrocarbon reserves. These units exhibit alternating carbonate and evaporite cycles, with a depositional model predicated on intrashelf basins partitioned by reefal barriers. Comprehensive facies investigation indicates ecosystems varying from high-energy oolitic shoals to confined lagoons and anoxic basinal conditions. Diagenetic processes, such as dolomitization and anhydrite cementation, substantially affected reservoir quality. The Jurassic system in Arabia constitutes a cohesive hydrocarbon system characterized by intricate stratigraphy shaped by tectonic activity, eustatic sea-level fluctuations, and depositional mechanisms.

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The Jurassic

  • Fadhil N. Sadooni,
  • Hamad Al-Saad Al-Kuwari

摘要

The Jurassic succession of the Arabian Plate is renowned for its rich petroleum systems, with Upper Jurassic reservoir rocks producing a substantial share of global oil and gas. This chapter examines the stratigraphy, tectonic development, and depositional conditions of Jurassic sediments throughout Arabia, encompassing Saudi Arabia, Qatar, Kuwait, Iraq, and the United Arab Emirates. The chapter opens with an overview of the Jurassic stratigraphic framework, highlighting the difficulties in regional connections across various outcrops and borehole data. The tectonic evolution is examined through the division of the Gondwana and Laurasia supercontinents and the formation of the Neo-Tethys Sea. This tectonic activity shaped the formation of large shallow carbonate platforms throughout Arabia, resulting in diverse depositional regimes governed by regional arches and basins, including the Qatar-Fars Arch and the Gotnia Basin. The chapter elucidates the impacts of climatic and sea-level fluctuations on sediment deposition, forming organic-rich source rocks, carbonate reservoirs, and evaporite seals. The chapter examines the stratigraphic units, particularly the productive Middle and Upper Jurassic formations (Hanifa, Jubaila, and Arab) that contain substantial hydrocarbon reserves. These units exhibit alternating carbonate and evaporite cycles, with a depositional model predicated on intrashelf basins partitioned by reefal barriers. Comprehensive facies investigation indicates ecosystems varying from high-energy oolitic shoals to confined lagoons and anoxic basinal conditions. Diagenetic processes, such as dolomitization and anhydrite cementation, substantially affected reservoir quality. The Jurassic system in Arabia constitutes a cohesive hydrocarbon system characterized by intricate stratigraphy shaped by tectonic activity, eustatic sea-level fluctuations, and depositional mechanisms.