Sedimentary Environment, Diagenesis and Sequence Stratigraphy of the Fahliyan Formation in Kilur Karim Oil Field (well# B)

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Azad Shahraki Leila; RAHIMPOUR BONAB HOSSAIN; RANJBARAN MOHSEN

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Journal: APPLIED SEDIMENTOLOGY Year:2018 | Volume:5 | Issue:10 Page(s): 64-80

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Title

Sedimentary Environment, Diagenesis and Sequence Stratigraphy of the Fahliyan Formation in Kilur Karim Oil Field (well# B)

Author(s)

Azad Shahraki Leila | RAHIMPOUR BONAB HOSSAIN | RANJBARAN MOHSEN | Issue Writer Certificate

Keywords

Keywords:Fahliyan FormationQ2

Kilur Karim Oil FieldQ1

Sedimantary EnvironmentQ2

DiagenesisQ2

Sequence StratigraphyQ2

Abstract

The Fahliyan carbonate formation (Neocomian in age) is one of the major reservoirs of the Khami Group in the southwest of Iran. In this study, the sedimentary succession of the Fahliyan Formation in Kilur Karim Oil Field well#B (520m thick), situated in the Dezful Embayment, was investigated for microfacies, paleoenvironmental, diagenetic and sequence stratigraphic analyses. Based on thin section studies (some 490 samples), 11 microfacies and 5 facies associations were identified. According to the characteristics of typical sedimentary environments, these facies were deposited in a homoclinal carbonate ramp. Due to the dominance of the inner ramp (especially lagoonal) facies in the studied subsurface section, it is deduced that this area, in Neocomian, has been located in the marginal shallow parts of the Zagros Basin. Petrographic studies showed that the main diagenetic features of the Fahliyan carbonates were micritization, neomorphism, cementation, dissolution, compaction, dolomitization, fracturing, and pyritization. Sequence stratigraphic investigations led to recognition of three third order depositional sequences (comprising transgressive and highstand systems tracts) in the Fahliyan Formation. The lower boundary of the first sequence is type-1 and the other sequence boundaries are type-2. Lack of reservoir quality effective diagenetic processes and high amount of lime mudstone facies in the well succession have caused a low reservoir quality for the Fahliyan Formation in Kilur Karim Oil Field well#B.

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APA: Copy

Azad Shahraki, Leila, RAHIMPOUR BONAB, HOSSAIN, & RANJBARAN, MOHSEN. (2018). Sedimentary Environment, Diagenesis and Sequence Stratigraphy of the Fahliyan Formation in Kilur Karim Oil Field (well# B). APPLIED SEDIMENTOLOGY, 5(10 ), 64-80. SID. https://sid.ir/paper/260581/en

Vancouver: Copy

Azad Shahraki Leila, RAHIMPOUR BONAB HOSSAIN, RANJBARAN MOHSEN. Sedimentary Environment, Diagenesis and Sequence Stratigraphy of the Fahliyan Formation in Kilur Karim Oil Field (well# B). APPLIED SEDIMENTOLOGY[Internet]. 2018;5(10 ):64-80. Available from: https://sid.ir/paper/260581/en

IEEE: Copy

Leila Azad Shahraki, HOSSAIN RAHIMPOUR BONAB, and MOHSEN RANJBARAN, “Sedimentary Environment, Diagenesis and Sequence Stratigraphy of the Fahliyan Formation in Kilur Karim Oil Field (well# B),” APPLIED SEDIMENTOLOGY, vol. 5, no. 10 , pp. 64–80, 2018, [Online]. Available: https://sid.ir/paper/260581/en

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