Field-scale geometries of Upper Khuff reservoir geobodies in an outcrop analogue (Oman Mountains, Sultanate of Oman)

Koehrer, Bastian; Aigner, Thomas; Pöppelreiter, Michael

doi:10.1144/1354-079310-009

Cited by 36 publications

(13 citation statements)

References 16 publications

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“…Mountains is represented by well-bedded layer-cake platform carbonates (Aigner and Dott, 1990;Koehrer et al, 2012;Koehrer et al, 2011). The deposition of these extensive platform carbonates was initiated from Middle Permian to Early Triassic times (Callot et al, 2010;Weidlich and Bernecker, 2011) triggered by the rifting of the Neo-Tethys ocean (Koehrer et al, 2011;Pillevuit, 1993;Stampfli and Borel, 2002) and the fragmentation of the supercontinent Pangaea (Ruban et al, 2007;Sharland et al, 2001).…”

Section: Geologic Setting Depositional and Structural Characteristicsmentioning

confidence: 99%

“…The deposition of these extensive platform carbonates was initiated from Middle Permian to Early Triassic times (Callot et al, 2010;Weidlich and Bernecker, 2011) triggered by the rifting of the Neo-Tethys ocean (Koehrer et al, 2011;Pillevuit, 1993;Stampfli and Borel, 2002) and the fragmentation of the supercontinent Pangaea (Ruban et al, 2007;Sharland et al, 2001). The more than 2000 km wide extension of the platform allows the study of stratigraphically equivalent sediments to Oman in the subsurface of Bahrain, UAE, Qatar, Saudi Arabia and Kuwait (Weidlich and Bernecker, 2011) (subsurface Khuff Formation).…”

Section: Geologic Setting Depositional and Structural Characteristicsmentioning

confidence: 99%

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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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Section: Geologic Setting Depositional and Structural Characteristicsmentioning

confidence: 99%

Section: Geologic Setting Depositional and Structural Characteristicsmentioning

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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“…In the forward sense, it has also been shown that several depositional scenarios can produce the same succession of stratigraphic units (Helland-Hansen and Gjelberg, 1994;Armitage et al, 2015;Burgess and Prince, 2015), which motivates the consideration of multiple correlation hypotheses. Even under the same set of hypotheses, correlation lines can be uncertain and are not easily formulated in a systematic and repeatable way when drawn manually by experts (Borgomano et al, 2008;Koehrer et al, 2011;Colombera et al, 2012;Lallier et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Uncertainty management in stratigraphic well correlation and stratigraphic architectures: A training-based method

Edwards

Lallier

Caumon

et al. 2018

Computers & Geosciences

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We discuss the sampling and the volumetric impact of stratigraphic correlation uncertainties in basins and reservoirs. From an input set of wells, we evaluate the probability for two stratigraphic units to be associated using an analog stratigraphic model. In the presence of multiple wells, this method sequentially updates a stratigraphic column defining the stratigraphic layering for each possible set of realizations. The resulting correlations are then used to create stratigraphic grids in three dimensions. We apply this method on a set of synthetic wells sampling a forward stratigraphic model built with Dionisos. To perform cross-validation of the method, we introduce a distance comparing the relative geological time of two models for each geographic position, and we compare the models in terms of volumes. Results show the ability of the method to automatically generate stratigraphic correlation scenarios, and also highlight some challenges when sampling stratigraphic uncertainties from multiple wells.

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“…It has been suggested that the investigated rock sequences are useful outcrop analogues of the gas‐bearing reservoirs of the Khuff Formation in the subsurface Arabian Plate (Strohmenger et al ., ; Alsharhan, ; Maurer et al ., ). Depositional facies, as well as diagenetic and structural evolution, are believed to have played a decisive role in determining the reservoir properties of the Khuff Formation (Videtich, ; Ehrenberg, ; Ehrenberg et al ., ; Rahimpour‐Bonab, ; Moradpour et al ., ; Esrafili‐Dizaji & Rahimpour‐Bonab, ; Ameen et al ., ; Koehrer et al ., , ; Rahimpour‐Bonab et al ., ). For instance, early diagenetic processes, such as aragonite dissolution and host‐rock dolomitization, are known to increase the porosity and permeability of Khuff carbonates.…”

Section: Introductionmentioning

confidence: 99%

Fluid–rock interactions associated with regional tectonics and basin evolution

et al. 2013

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An integrated approach consisting of fracture analysis, petrography, carbon, oxygen and strontium-isotope analyses, as well as fluid-inclusion micro-thermometry, led to a better understanding of the evolution of fluid-rock interactions and diagenesis of the Upper Permian to Upper Triassic carbonates of the United Arab Emirates. The deposited carbonates were first marked by extensive early dolomitization. During progressive burial, the carbonates were affected by dolomite recrystallization as well as precipitation of vug and fracture-filling dolomite, quartz and calcite cements. After considerable burial during the Middle Cretaceous, sub-vertical north-south oriented fractures (F1) were cemented by dolomite derived from mesosaline to hypersaline fluids. Upon the Late Cretaceous maximum burial and ophiolite obduction, sub-vertical east-west fractures (F2) were cemented by dolomite (Dc2) and saddle dolomite (Ds) derived from hot, highly saline fluids. Then, minor quartz cement has precipitated in fractures from hydrothermal brines. Fluid-inclusion analyses of the various diagenetic phases imply the involvement of increasingly hot (200°C) saline brines (20 to 23% NaCl eq.). Through one-dimensional burial history numerical modelling, the maximum temperatures reached by the studied rocks are estimated to be in the range of 160 to 200°C. Tectonically-driven flux of hot fluids and associated diagenetic products are interpreted to have initiated during the Late Cretaceous maximum burial and lasted until the Oligocene-Miocene compressional tectonics and related uplift. The circulation of such hydrothermal brines led to partial dissolution of dolomites (Dc2 and Ds) and to precipitation of hydrothermal calcite C1 in new (mainly oriented north-south; F3) and preexisting, reactivated fractures. The integration of the obtained data confirms that the diagenetic evolution was controlled primarily by the interplay of the burial thermal evolution of the basin and the regional tectonic history. Hence, this contribution highlights the impacts of regional tectonics and basin history on diagenetic processes, which may subsequently affect reservoir properties.

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Field-scale geometries of Upper Khuff reservoir geobodies in an outcrop analogue (Oman Mountains, Sultanate of Oman)

Cited by 36 publications

References 16 publications

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

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

Uncertainty management in stratigraphic well correlation and stratigraphic architectures: A training-based method

Fluid–rock interactions associated with regional tectonics and basin evolution

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