Microfacies and depositional environment of Asmari formation in the Zeloi oil field, Zagros basin, south-west Iran

Abyat, Yasin; Abyat, Ahmad; Abyat, Abdolkhalegh

doi:10.1007/s13146-019-00507-1

Cited by 14 publications

(5 citation statements)

References 35 publications

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“…The Mansouri field is located north of the Ahwaz field, in the west, in the vicinity of the Abteymur and Susangerd fields, and northeast of the Shadegan field [40][41][42]. The Asmari carbonate Formation is an Oligocene and Miocene period hydrocarbon reservoir in western Zagros mountain that primarily consists of marly limestone, dolomite, dolomitic limestone, and limestone [25,41,43,44].…”

Section: Geological Setting Of the Case Study Areamentioning

confidence: 99%

Employing Statistical Algorithms and Clustering Techniques to Assess Lithological Facies for Identifying Optimal Reservoir Rocks: A Case Study of the Mansouri Oilfields, SW Iran

Eftekhari,

Memariani,

Maleki

et al. 2024

Minerals

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The crucial parameters influencing drilling operations, reservoir production behavior, and well completion are lithology and reservoir rock. This study identified optimal reservoir rocks and facies in 280 core samples from a drilled well in the Asmari reservoir of the Mansouri field in SW Iran to determine the number of hydraulic flow units. Reservoir samples were prepared, and their porosity and permeability were determined by measuring devices. The flow zone index (FZI) was calculated for each sample using MATLAB software; then, a histogram analysis was performed on the logarithmic data of the FZI, and the number of hydraulic flow units was determined based on the obtained normal distributions. Electrical facies were determined based on artificial neural network (ANN) and multi-resolution graph-based clustering (MRGC) approaches. Five electrical facies with dissimilar reservoir conditions and lithological compositions were ultimately specified. Based on described lithofacies, shale and sandstone in zones three and five demonstrated elevated reservoir quality. This study aimed to determine the Asmari reservoir’s porous medium’s flowing fluid according to the C-mean fuzzy logic method. Furthermore, the third and fourth flow units in the Asmari Formation have the best flow units with high reservoir quality and permeability due to determining the siliceous–clastic facies of the rock units and log data. Outcomes could be corresponded to the flow unit determination in further nearby wellbores without cores.

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Section: Geological Setting Of the Case Study Areamentioning

confidence: 99%

Employing Statistical Algorithms and Clustering Techniques to Assess Lithological Facies for Identifying Optimal Reservoir Rocks: A Case Study of the Mansouri Oilfields, SW Iran

Eftekhari,

Memariani,

Maleki

et al. 2024

Minerals

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“…Sequence (I) in Kozhdi Formation is 43 m thick at the age of Albin. The time and presence of gluconite and iron oxide minerals have been determined [2,3].…”

Section: Sequential Stratigraphymentioning

confidence: 99%

Sedimentological Studies of Marine Oil Fields in Order to Reduce Drilling Risk and Environmental Pollution: A Case Study of South of Iran

Abbasi¹,

Pourmorad²,

Mohanty³

et al. 2023

BIJCEES

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Detailed studies of sedimentology and petrology of oil ﬁelds, especially oil ﬁelds located in the seas, play a very important role in reducing the risk of danger, increasing harvest, and reducing the amount of environmental pollution. The South Pars gas ﬁeld in the waters of the Persian Gulf on the joint border line of Iran and Qatar and on the south coast of Iran has been used as a comprehensive model for this type of study. In these studies, the sedimentary environment and sequential stratigraphy of the Scorpion and Sarvak Formations in the South Pars gas ﬁeld in wells 1 and 3 have been investigated. Microscopic studies and analysis of gamma-ray and acoustic diagrams of these formations have led to the identiﬁcation of 9 facies in three facies belts related to wetland, dam, and open sea. Dam facies have been identiﬁed only in Sarvak formation. This study shows that the facies belts of the abovementioned formations in a ramp platform are also sloping. Sequence stratigraphy of Kazhdomi and Sarvak Formations in the study wells shows that Kazhdomi Formation has one sedimentary sequence (third category cycle) and Sarvak Formation has two sedimentary sequences. The lower boundaries of sequences 1 and 2 and the upper boundary of sequence 3 have type 1 (SB1) discontinuities, and the boundary between sequences 2 and 3 has type 2 (SB2) discontinuities.

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“…Sequence (I) in Kozhdi Formation is 43 m thick at the age of Albin. The time and presence of gluconite and iron oxide minerals have been determined (45,46).…”

Section: Sequential Stratigraphymentioning

confidence: 99%

Sedimentological studies of marine oil ﬁelds in order to reduce drilling risk and environmental pollution: a case study of South of Iran

Abbasi,

Pourmorad,

Mohanty

et al. 2023

BIJCEES

View full text Add to dashboard Cite

Detailed studies of sedimentology and petrology of oil fields, especially oil fields located in the seas, play avery important role in reducing the risk of danger, increasing harvest, and reducing the amount of environmentalpollution. The South Pars gas field in the waters of the Persian Gulf on the joint border line of Iran and Qatar andon the south coast of Iran has been used as a comprehensive model for this type of study. In these studies, thesedimentary environment and sequential stratigraphy of the Scorpion and Sarvak Formations in the South Parsgas field in wells 1 and 3 have been investigated. Microscopic studies and analysis of gamma-ray and acousticdiagrams of these formations have led to the identification of 9 facies in three facies belts related to wetland,dam, and open sea. Dam facies have been identified only in Sarvak formation. This study shows that the faciesbelts of the abovementioned formations in a ramp platform are also sloping. Sequence stratigraphy of Kazhdomiand Sarvak Formations in the study wells shows that Kazhdomi Formation has one sedimentary sequence (thirdcategory cycle) and Sarvak Formation has two sedimentary sequences. The lower boundaries of sequences 1 and2 and the upper boundary of sequence 3 have type 1 (SB1) discontinuities, and the boundary between sequences2 and 3 has type 2 (SB2) discontinuities.

show abstract

Microfacies and depositional environment of Asmari formation in the Zeloi oil field, Zagros basin, south-west Iran

Cited by 14 publications

References 35 publications

Employing Statistical Algorithms and Clustering Techniques to Assess Lithological Facies for Identifying Optimal Reservoir Rocks: A Case Study of the Mansouri Oilfields, SW Iran

Employing Statistical Algorithms and Clustering Techniques to Assess Lithological Facies for Identifying Optimal Reservoir Rocks: A Case Study of the Mansouri Oilfields, SW Iran

Sedimentological Studies of Marine Oil Fields in Order to Reduce Drilling Risk and Environmental Pollution: A Case Study of South of Iran

Sedimentological studies of marine oil ﬁelds in order to reduce drilling risk and environmental pollution: a case study of South of Iran

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