Sequence Stratigraphy and Sr Isotope Stratigraphy of the Oligo-Miocene Deposits in the Dezful Embayment (Asmari and Pabdeh Formations, SW Iran) - Implications for Reservoir Characterisation

Buchem, F. S. P.; Allan, Tony; Laursen, Gitte V.; Lotfpour, Masoud; Moallemi, Ali; Monibi, S.; Motiei, H.; Pickard, Neil A. H.; Tahmasbi, Alireza; Vedrenne, V.; Vincent, Benoı̂t

doi:10.3997/2214-4609.20145917

Cited by 4 publications

(2 citation statements)

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“…The carbonate interval (Aquitanian and Burdigalian) deposited in a homoclinal ramp. The siliciclastic interval (Rupelian and Chattian) of this formation formed in Coastal plain to terrestrial/fluvial environment; distal deltaic and subtidal environment and offshore marine to basin (Van Buchem et al, 2010;Honarmand, 2013). Seemingly, the latter part is correlated with Ghar Formation in Kuwait whose clastic inputs is believed to have been derived from the pre-rift uplift of the Red Sea to the west (Alsharhan and Nairn, 1997).…”

Section: Facies Descriptionmentioning

confidence: 96%

“…The Asmari Formation that deposited on a tropical ramp covering SW Iran in Oligo-Miocene (Henson, 1951;Dunnington, 1958Dunnington, , 1967James and Wynd, 1965) shows a high variability from lithological point of view. Accordingly, its main lithology in the Dezful Embayment and the studied field comprises carbonate, mixed carbonate-evaporate and mixed carbonate-siliciclastic rocks (Van Buchem et al, 2010).…”

Section: Facies Descriptionmentioning

confidence: 99%

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A seismic-driven 3D model of rock mechanical facies: An example from the Asmari reservoir, SW Iran

Gharechelou

Sepideh

Kadkhodaie

et al. 2016

Journal of Petroleum Science and Engineering

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Asmari Formation is one of the most prolific and important hydrocarbon reservoirs in Iran. This formation in the Cheshmeh-Khosh oilfield shows mixed carbonate-siliciclastic lithology and its elastic modulus changes are correlatable with facies changes. To address these changes, we investigated the relation between sedimentary environment (facies) and texture with various elastic moduli. The Young's modulus shows higher correlation with the facies changes. Data from three wells are analyzed and used for the construction of rock mechanical facies. Based on elastic properties, facies and texture changes as well as petrophysical characteristics seven rock mechanical facies (RMFs) are recognized in the studied formation. To predict RMFs at inter-well spaces more efficiently and capturing the lateral formation property variationsa 3D rock mechanical facies model is constructed based on seismic attributes. In this method, RMFs are correlatable between the studied wells and mappable by seismic attribute in the field scale. Finally, the distribution of RMFs and their related properties is investigated in the studied field.

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Section: Facies Descriptionmentioning

confidence: 96%

Section: Facies Descriptionmentioning

confidence: 99%

A seismic-driven 3D model of rock mechanical facies: An example from the Asmari reservoir, SW Iran

Gharechelou

Sepideh

Kadkhodaie

et al. 2016

Journal of Petroleum Science and Engineering

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The effects of diagenesis on the petrophysical and geochemical attributes of the Asmari Formation, Marun oil field, southwest Iran

et al. 2020

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The distribution of good reservoir quality and its causes is the main challenges in carbonate reservoir characterization. This study investigates the effects of diagenetic processes on the reservoir quality of the carbonate successions of the Asmari Formation, in the Marun oil field, southwest Iran. The study applies an integrated approach including core petrography, petrophysical rock typing, stable carbon and oxygen isotopes as well as major and trace elements analyses. Petrographic studies and geochemical analyses express that the Asmari limestones have been affected mainly by compaction, dissolution, recrystallization, calcite and anhydrite cementation and dolomitization. Among those diagenetic overprints, dolomitization and dissolution played an important role to enhance the reservoir quality of the formation. Moreover, four types of dolomites were recognized and the rate of dolomitization increases toward the top of the Asmari carbonate successions. Possible models for dolomitization include mixing zone, brine reflux, seepage reflux and tidal pumping of seawater. Employing Flow Zone Index and Discrete Rock Type concepts led to classification of the Asmari reservoir into seven reservoir rock types. Integrating reservoir rock typing with petrographic studies and geochemical analyses also confirms that reservoir quality of the Asmari Fm. would have been mainly controlled by diagenetic processes. Moreover, stable isotopes, trace elements and facies analyses support the idea that carbonate intervals of the Asmari Formation were deposited in a warm, shallow-water environment under a saline condition.

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Pore types distribution and their reservoir properties in the sequence stratigraphic framework: a case study from the Oligo-Miocene Asmari Formation, SW Iran

2016

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Sequence Stratigraphy and Sr Isotope Stratigraphy of the Oligo-Miocene Deposits in the Dezful Embayment (Asmari and Pabdeh Formations, SW Iran) - Implications for Reservoir Characterisation

Cited by 4 publications

References 0 publications

A seismic-driven 3D model of rock mechanical facies: An example from the Asmari reservoir, SW Iran

A seismic-driven 3D model of rock mechanical facies: An example from the Asmari reservoir, SW Iran

The effects of diagenesis on the petrophysical and geochemical attributes of the Asmari Formation, Marun oil field, southwest Iran

Pore types distribution and their reservoir properties in the sequence stratigraphic framework: a case study from the Oligo-Miocene Asmari Formation, SW Iran

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