Palynology and petroleum potential of the Kazhdumi Formation (Cretaceous: Albian–Cenomanian) in the South Pars field, northern Persian Gulf

Ghasemi-Nejad, Ebrahim; Head, Martin J.; Naderi, Mehrangiz

doi:10.1016/j.marpetgeo.2008.05.005

Cited by 50 publications

(14 citation statements)

References 11 publications

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“…Other Albian-Cenomanian records from Egypt include those of Abd El Shafy and Abd El Moneim (1991), El Beialy (1993) and Aboul Ela et al (1996). It was also reported recently from the same interval in Iran (Ghasemi-Nejad et al, 2009).…”

Section: Brasiliensis Interval Zonesupporting

confidence: 77%

Palynological, palynofacies, paleoenvironmental and organic geochemical studies on the Upper Cretaceous succession of the GPTSW-7 well, North Western Desert, Egypt

Beialy

Atfy

Zavada

et al. 2010

Marine and Petroleum Geology

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Section: Brasiliensis Interval Zonesupporting

confidence: 77%

Palynological, palynofacies, paleoenvironmental and organic geochemical studies on the Upper Cretaceous succession of the GPTSW-7 well, North Western Desert, Egypt

Beialy

Atfy

Zavada

et al. 2010

Marine and Petroleum Geology

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“…Outstanding Kazhdumi source rocks were also deposited during the Albian (Bordenave and Hegre, 2010). However at the A and B fields, both the Sargelu and Kazhdumi Formation are characterized by low TOC contents (Ghasemi-Nejad et al, 2008;Fathi Mobarakabad et al, 2011).…”

Section: The Conceptual Modelmentioning

confidence: 99%

3d Basin Modelling in the Central Persian Gulf, Offshore Iran

Mohsenian

Fathi-Mobarakabad

Sachsenhofer

et al. 2013

Journal of Petroleum Geology

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In the Central Persian Gulf, super‐giant natural gas accumulations in Permo‐Triassic reservoirs are assumed to be derived from “hot shale” source rocks in the lower Llandoverian (base‐Silurian) Sarchahan Formation, whereas oil in Mesozoic reservoirs is derived from Mesozoic source rocks. A 3D basin model has been established for a study area located in the Iranian part of the Central Persian Gulf in order to help understand the petroleum systems there. Sensitivity analyses considered different heat flow scenarios, and differences in the timing of Cenozoic uplift and erosion. For the Palaeozoic petroleum system, different thicknesses and distributions of the Silurian source rocks were considered. From current temperature profiles measured in five wells, present‐day heat flow was found to be in the order of 65 mW/m2, while palaeo heat flow was probably between 60 and 68 mW/m2 during Cenozoic maximum burial. For Llandoverian source rocks, oil and gas generation commenced during Jurassic and Late Cretaceous time respectively, and gas generation continued until the Neogene. Sensitivity analyses show that different assumptions on the timing of Cenozoic erosion do not have significant effects on the calculated timing of hydrocarbon generation or on the volume of generated hydrocarbons. As expected however, different heat flow scenarios (e.g. time‐constant heat flow of 65 mW/m2 in the entire study area) had a significant influence. With an assumed 50 m thick Sarchahan “hot shale” succession developed uniformly in the study area (8 % TOC; 470 mg HC / g TOC HI), the model calculated gas accumulations which are of the same order of magnitude as those which have been discovered in this region (e.g. South Pars, Golshan and Balal fields). By contrast, scenarios with thinner “hot shales” and models without the Sarchahan Formation along the Qatar‐South Fars Arch do not predict the known accumulations. These scenarios suggest that prolific Silurian source rocks must be present on both sides of the South Pars / North Dome field, or that lateral gas migration from the south may have supplied the Permo‐Triassic reservoirs. This study shows that the Jurassic (mainly Hanifa / Tuwaiq Mountain Formation) and Cretaceous (Shilaif Formation) source units are not sufficiently mature in the study area to have generated significant volumes of oil. This result supports previous suggestions which envisaged lateral migration from the south of the oil present in Mesozoic reservoirs in the study area.

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“…Many studies have covered the Zagros in terms of petroleum research (Ala, Kinghorn & Rahman, 1980;Ala, 1982;Bordenave & Burwood, 1990;Ghasemi-Nejad, Head & Naderi, 2009), structural geology (Stocklin, 1968;Falcon, 1974;Colman-Sadd, 1978;Bahroudi & Koyi, 2003McQuarrie, 2004;Sherkati & Letouzey, 2004;Sepehr & Cosgrove, 2004;Molinaro, Zeyen & Laurencin, 2005;Lacombe et al 2006Mouthereau et al 2007;Aubourg et al 2008;Jahani et al 2009), basin evolution (Alavi, 2004(Alavi, , 2007 and carbonate stratigraphy (e.g. from the OligoMiocene Asmari limestone and older units, e.g.…”

Section: Introductionmentioning

confidence: 99%

Neogene sediments and modern depositional environments of the Zagros foreland basin system

et al. 2011

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-A sedimentological investigation of the Neogene deposits of the Zagros foreland basin in SW Iran reveals a continuous and largely gradational passage from supratidal and sabkha sediments at the base (represented by the Gachsaran Formation) to carbonates and marine marls (Mishan Formation with basal Guri carbonate member) followed by coastal plain and meandering river deposits (Agha Jari Formation) and finally to braided river gravel sheets (Bakhtyari Formation). This vertical succession is interpreted to represent the southward migration of foreland basin depozones (from distal foredeep and foredeep to distal wedge-top and proximal wedge-top, respectively) as the Zagros fold-thrust belt migrated progressively southward towards the Arabian foreland. This vertical succession bears a striking similarity to modern depositional environments and sedimentary deposits observed in the Zagros region today, where one passes from mainly braided rivers in the Zagros Mountains to meandering rivers close to the coast, to shallow marine clastic sediments along the northern part of the Persian Gulf and finally to carbonate ramp and sabkha deposits along the southeastern coast of the Persian Gulf. This link between the Neogene succession and the modern-day depositional environments strongly suggests that the major Neogene formations of the Zagros foreland basin are strongly diachronous (as shown recently by others) and have active modern-day equivalents.

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Palynology and petroleum potential of the Kazhdumi Formation (Cretaceous: Albian–Cenomanian) in the South Pars field, northern Persian Gulf

Cited by 50 publications

References 11 publications

Palynological, palynofacies, paleoenvironmental and organic geochemical studies on the Upper Cretaceous succession of the GPTSW-7 well, North Western Desert, Egypt

Palynological, palynofacies, paleoenvironmental and organic geochemical studies on the Upper Cretaceous succession of the GPTSW-7 well, North Western Desert, Egypt

3d Basin Modelling in the Central Persian Gulf, Offshore Iran

Neogene sediments and modern depositional environments of the Zagros foreland basin system

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