From outcrop to 3D modelling: a case study of a dolomitized carbonate reservoir, Zagros Mountains, Iran

Lapponi, F.; Casini, Giulio; Sharp, Ian; Blendinger, Wolfgang; Fernández, Naiara; Romaire, I.; Hunt, David

doi:10.1144/1354-079310-040

Cited by 60 publications

(58 citation statements)

References 41 publications

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“…Dolomitization is thus likely to form geobodies with different geometries and flow-unit properties, adding to the heterogeneity of the reservoir (e.g. Lapponi et al, 2011). Dolomite bodies that formed during or soon after deposition, such as in a sabkha environment or seepage reflux dolomitization, can be predicted to have geometries similar to the original depositional geobodies.…”

Section: Introductionmentioning

confidence: 99%

Linking process, dimension, texture, and geochemistry in dolomite geobodies: A case study from Wadi Mistal (northern Oman)

Vandeginste¹,

John²,

Flierdt³

et al. 2013

Bulletin

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Understanding the distribution and geometry of reservoir geobodies is crucial for netto-gross estimates and to model subsurface flow. This paper focuses on the process of dolomitization and resulting geometry of diagenetic geobodies in an outcrop of Jurassic host rocks from northern Oman. Field and petrographic data show that a first phase of stratabound dolomite is crosscut by a second phase of fault-related dolomite. The stratabound dolomite geobodies are laterally continuous for at least several hundreds of meters (~1000 ft) and probably regionally and are half a meter (1.6 ft) thick. Based on petrography and geochemistry, a process of seepage reflux of mesosaline or hypersaline fluids during the early stages of burial diagenesis is proposed for the formation of the stratabound dolomite. In contrast, the fault-related dolomite geobodies are trending along a fault that can be followed for at least 100 Running head:Linking process, dimension, texture and geochemistry in dolomite geobodies

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Section: Introductionmentioning

confidence: 99%

Linking process, dimension, texture, and geochemistry in dolomite geobodies: A case study from Wadi Mistal (northern Oman)

Vandeginste¹,

John²,

Flierdt³

et al. 2013

Bulletin

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“…Due to the high amount of large scale dolomite bodies related to karst systems in the Middle East e.g., hosted in the Cretaceous Sarvak formation in Iran (Hajikhazemi et al, 2010;Lapponi et al, 2011;Sharp et al, 2010), the Bih formation in the United Arab Emirates (Fontana et al, 2010) or the Hiyam Formation exposed in the Saih…”

mentioning

confidence: 99%

Relationship between karstification and burial dolomitization in Permian platform carbonates (Lower Khuff — Oman)

Beckert

Vandeginste

John

2016

Sedimentary Geology

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Please cite this article as: Beckert, Julia, Vandeginste, Veerle, John, Cédric M., Relationship between karstification and burial dolomitization in Permian platform carbonates (Lower Khuff -Oman), Sedimentary Geology (2016Geology ( ), doi: 10.1016Geology ( /j.sedgeo.2016 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

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“…By contrast, there are only few outcrops of HTD that can serve to better understand the controlling factors on hydrothermal dolomitization and the poroperm variations (e.g. Al-Aasm, 2003;Gasparrini et al 2003;López-Horgue et al 2005Nader et al 2007;Schröder et al 2008;Sharp et al 2010;Lapponi et al 2011;Ronchi et al 2012). Most of the known HTD occurrences have an important structural control; extensional and/or strike-slip settings are particularly common geodynamical settings (e.g.…”

mentioning

confidence: 99%

Interplay between fracturing and hydrothermal fluid flow in the Asón Valley hydrothermal dolomites (Basque–Cantabrian Basin, Spain)

Iriarte

López‐Horgue

Schroeder

et al. 2012

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In Asón Valley hydrothermal dolomite area (Basque–Cantabrian Basin, northern Spain), an overlapping stepover area between two major basement faults, the Cabuerniga and Ruahermosa transtensional faults, was the location for different scales and types of extensive fractures. This fracture mesh affected the Albian Ranero limestone and was formed in a dilational jog, a regional fluid throughflow area. It acted as pathway for overpressured fluids that controlled the dolomite mineralization in the Ranero massif area. The study of synchronous structural features, fluid flow channelling and dolomitization processes indicated their tectonic control. The fluid circulated and concentrated preferentially in more fractured areas with increased permeability, such as extensional chimneys, creating dolomite bodies. Repeated extensive tectonic activity enhanced fracture porosity, promoting overpressured fluid migration and cyclical dolomitization events. The studied fracture pattern suggests the presence of sinistral transtension during the formation of extensional joint-sets that channellized the mineralizing fluid-flow. A gradation in structural features and dolomite facies and textures is visible from the main Pozalagua fault dolomite body to peripheral dolomite bodies as the Breccia body and Ranero megajoints. These differences could reflect a proximal–distal trend from the main fluid-flow area along the Pozalagua fault to the Ranero megajoints.

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From outcrop to 3D modelling: a case study of a dolomitized carbonate reservoir, Zagros Mountains, Iran

Cited by 60 publications

References 41 publications

Linking process, dimension, texture, and geochemistry in dolomite geobodies: A case study from Wadi Mistal (northern Oman)

Linking process, dimension, texture, and geochemistry in dolomite geobodies: A case study from Wadi Mistal (northern Oman)

Relationship between karstification and burial dolomitization in Permian platform carbonates (Lower Khuff — Oman)

Interplay between fracturing and hydrothermal fluid flow in the Asón Valley hydrothermal dolomites (Basque–Cantabrian Basin, Spain)

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