Porosity evolution in sequence stratigraphic framework: a case from Cretaceous carbonate reservoir in the Persian Gulf, southern Iran

2021 ◽  
Vol 196 ◽  
pp. 107699
Author(s):  
Hamzeh Mehrabi ◽  
Mohammad Bahrehvar ◽  
Hossain Rahimpour-Bonab
Keyword(s):  
Persian Gulf ◽  
Carbonate Reservoir ◽  
Sequence Stratigraphic ◽  
Porosity Evolution ◽  
Southern Iran ◽  
Stratigraphic Framework ◽  
The Persian Gulf

scholarly journals Geologically based integrated approach for zonation of a Late Jurassic–Early Cretaceous carbonate reservoir; a case from Persian Gulf

2021 ◽  
Author(s):  
Alireza Asadi ◽  
Hossain Rahimpour-Bonab ◽  
Mohsen Aleali ◽  
Mehran Arian
Keyword(s):  
Early Cretaceous ◽  
Persian Gulf ◽  
Late Jurassic ◽  
Carbonate Reservoir ◽  
Depositional Sequences ◽  
Sequence Stratigraphic ◽  
Stratigraphic Framework ◽  
Petrophysical Data ◽  
The Persian Gulf ◽  
Diagenetic Feature

AbstractIn this study, our attempt is to integrate sedimentological and petrophysical data for reservoir evaluation in the sequence stratigraphic framework. Petrographic analysis of the Late Jurassic–Early Cretaceous Fahliyan Formation reservoirs of two oilfields in the northwest of the Persian Gulf led to recognition of twelve microfacies. They can be classified into four facies associations, including open marine, shoal, lagoon and tidal flat, which are deposited in a homoclinal ramp carbonate. Sequence stratigraphy of the studied successions led to the recognition of three third-order depositional sequences based on vertical changes in microfacies and gamma ray analysis. Except for the upper boundary of the third sequence, the other sequence boundaries are type I (SBT.1). Dissolution is the most important diagenetic feature that affected the lower depositional sequence which is caused by the development of subaerial exposure after the deposition of the Fahliyan Formation, whereas cementation is the main diagenetic feature affecting the second- and third depositional sequences, causing their lower reservoir quality. In order to identify the flow units, the flow zone index methods, porosity throat radius (R35) and modified Lorenz based on stratigraphy were applied. The key wells studied in this area have shown good correlation throughout the studied oilfields which may potentially be used for hydrocarbon exploration and field development in the Late Jurassic–Early Cretaceous deposits of the Persian Gulf. This study integrates geological and petrophysical data (rock typing) toward sequence stratigraphic framework.

Mites of the genera Leioseius Berlese and Protogamasellus Karg (Mesostigmata, Ascidae) in mangrove forests in southern Iran, with a key to the genera and species of Ascidae recorded from Iran

2019 ◽  
Vol 24 (7) ◽  
pp. 1319-1336
Author(s):  
Shahrooz Kazemi
Keyword(s):  
Persian Gulf ◽  
Littoral Zone ◽  
First Record ◽  
Mangrove Forests ◽  
Qeshm Island ◽  
Southern Iran ◽  
Adult Females ◽  
Intraspecific Variations ◽  
The Family ◽  
The Persian Gulf

In a survey on the edaphic mesostigmatic mites in mangrove forests of Qeshm Island, eastern of the Persian Gulf, two species of the family Ascidae were collected in broken cockleshells and sand in littoral zone: Leioseius sepidehae sp. nov. and Protogamasellus mica (Athias-Henriot, 1961). This is the first record of the genus Leioseius from Iran. Leioseius sepidehae sp. nov. is described from adult females. Intraspecific variations of some characters of P. mica are discussed, and based on those, P. primitivus machadoi Genis, Loots & Ryke, 1967 and P. primitivus similis Genis, Loots & Ryke, 1967 are herein synonymized under P. mica. Finally, the occasional presence of the gland pores gv1 in Ascidae is reviewed, and a key to the Iranian genera and species of Ascidae is presented.

scholarly journals Retracted: Pierced Salt Domes in the Persian Gulf and in the Zagros Mountain Ranges in Southern Iran and their Relationship to Hydrocarbon and Basement Tectonics

2013 ◽  
Vol 2 (10) ◽  
pp. 116-133
Author(s):  
Hamid Reza Samadi
Keyword(s):  
Persian Gulf ◽  
Field Work ◽  
Aerial Photographs ◽  
Zagros Mountain ◽  
Mountain Ranges ◽  
Salt Domes ◽  
Southern Iran ◽  
Geological Processes ◽  
Basement Faults ◽  
The Persian Gulf

The most enigmatic problems with the nearly 200 salt domes pierced in the Persian Gulf and in the Zagros Mountain Ranges (ZMR) in southern Iran, a unique morphology in the world, have been the matter of this study, which is based on a combination of field work, enhancement of satellite and aerial photographs etc. In the ZMR, structural anomalies are frequently associated with similar facies distribution patterns. In the eastern portion of the region, emergent salt plugs of Infra-Cambrian age exhibit the same alignment patterns. Such trends bear no apparent genetic relationship to the Tertiary folding responsible for the present Zagros fold belt, but rather indicate their affinity with linear basement features which are readily observable on Land sat imagery and aerial photographs. Bending of anticlines in the competent cover rock, combined with minor strike-slip faults and horizontal displacements of parts of folded structures, strongly point to the presence of these basement faults. The salt plugs, which have pierced cover rocks of up to 10000 m thick, are distributed on the Arabian Platform along regional basement faults. The area of diapir outcrops is bounded by the Oman Line to the east and by the Kazerun fault to the west. Pieces of the basement have been brought up to the surface on some of the salt domes. The fragments were transported by rotational ascent of the Hormuz Salt Formation to the present and former land surfaces. The recognition of features related to basement tectonics and realization of their implication in the control and modification of geological processes are important adjuncts to the search for hydrocarbon accumulations in this region. To our best knowledge, data of basement faults in the study area are scarce. Therefore, this study was carried out to determine basement faults and their relation to salt dome distribution. Considering the fold axes bending, the trend of the salt plugs and also the distribution of epicenters of the last century, n umerous new basement faults are introduced in this paper.

Dolomitization and burial history of lower triassic carbonate reservoir-rocks in the Persian Gulf (Salman offshore field)

2014 ◽  
Vol 30 (1) ◽  
pp. 25-43 ◽  
Author(s):  
Maryam Peyravi ◽  
Hossain Rahimpour-Bonab ◽  
Fadi H. Nader ◽  
Mohammad Reza Kamali
Keyword(s):  
Persian Gulf ◽  
Lower Triassic ◽  
Carbonate Reservoir ◽  
Burial History ◽  
Reservoir Rocks ◽  
History Of ◽  
The Persian Gulf ◽  
Offshore Field

scholarly journals Re-validation and re-description of an endemic and threatened species, Aphanius pluristriatus (Jenkins, 1910) (Teleostei, Cyprinodontidae), from southern Iran

Zootaxa ◽  
2012 ◽  
Vol 3208 (1) ◽  
pp. 58 ◽  
Author(s):  
HAMID REZA ESMAEILI ◽  
AZAD TEIMORI ◽  
ZEINAB GHOLAMI ◽  
NEDA ZAREI ◽  
BETTINA REICHENBACHER
Keyword(s):  
River Basin ◽  
Persian Gulf ◽  
Late Quaternary ◽  
Drainage System ◽  
Valid Species ◽  
Type Specimens ◽  
Southern Iran ◽  
Kor River ◽  
Spring System ◽  
The Persian Gulf

Aphanius pluristriatus (Jenkins, 1910) (Cyprinodontidae) is a poorly known species from Fasa, located in the Mond Riverdrainage system, east of Shiraz, southern Iran. It has not been investigated since its first description, its validity has beenquestioned and a synonymy with A. sophiae (Heckel, 1849) has been suggested. In this study, we describe a new collectionof Aphanius specimens from the Zarjan spring system, which is probably the same spring system from where Jenkins(1910) collected the type specimens of A. pluristriatus. The morphological characters of our new series of specimens areconsistent with those of A. pluristriatus as originally described by Jenkins (1910). We emend the original description ofA. pluristriatus and add morphometric and meristic data. A comparison with the related taxa A. sophiae, A. farsicus (for-mer A. persicus) and A. isfahanensis reveals that A. pluristriatus can be separated from them by a smaller caudal peduncleindex, higher number of flank bars, lower number of gill rakers, and higher J scale index. Therefore A. pluristriatus rep-resents a valid species, which is at present restricted to the drainage system of the Mond River. We suggest that A. pluris-triatus originated from an ancient A. sophiae population in the Kor River Basin during the Quaternary. At that time, theKor River was draining to the Persian Gulf by the “Paleo-Kor River” and the Mond River. During the Late Quaternary orHolocene, the connection between the Kor River and the Persian Gulf has been blocked as a result of tectonic uplift (theKor River Basin is endorheic today). Thus, A. pluristriatus most likely is the relict of an ancient Aphanius population from the Quaternary “Paleo-Kor River” drainage system.

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