Characterization and Modeling of the Geo-Body Geometries and the Reservoir Properties: An Outcrop Analog Study of Jurassic Carbonate Reservoirs in Central Saudi Arabia

2019 ◽  
Author(s):  
Mohamed A. Yassin ◽  
Osman M. Abdullatif ◽  
Mohammad H. Makkawi ◽  
Ibrahim M. Yousif ◽  
Mutasim S. Osman
Keyword(s):  
Saudi Arabia ◽  
Carbonate Reservoirs ◽  
Reservoir Properties ◽  
Outcrop Analog ◽  
Analog Study

SECONDARY CHANGES IN CARBONATE ROCKS OF OIL AND GAS COMPLEXES

2020 ◽  
pp. 18-23
Author(s):  
M.A. Tugarova
Keyword(s):  
Carbonate Rocks ◽  
Oil And Gas ◽  
Carbonate Reservoirs ◽  
Fundamental Importance ◽  
Schematic Diagram ◽  
Reservoir Properties ◽  
Physico Chemical ◽  
Chemical Conditions ◽  
First Time

The article considers the secondary transformations of carbonate rocks of oil and gas complexes, which are of fundamental importance in the formation of reservoir properties. For the first time, a schematic diagram, illustrating the regularities of secondary processes in carbonate reservoirs and their relationship with the physico-chemical conditions of the stratosphere is proposed.

The effect of carbonate cementation on permeability heterogeneity in fluvial aquifers: An outcrop analog study

2006 ◽  
Vol 184 (3-4) ◽  
pp. 267-280 ◽  
Author(s):  
J. Matthew Davis ◽  
Nicole Delude Roy ◽  
Peter S. Mozley ◽  
John S. Hall
Keyword(s):  
Permeability Heterogeneity ◽  
Carbonate Cementation ◽  
Outcrop Analog ◽  
Analog Study

Digital Outcrop Analog Reservoir Model of the Miocene Turbidite Sandstones, Midyan Area, Red Sea Region, Saudi Arabia

2019 ◽  
Author(s):  
Osman Abdullatif ◽  
Mutasim Osman ◽  
Mohamed Yassin ◽  
Mohamed Makkawi ◽  
Mohamed Al-Farhan
Keyword(s):  
Saudi Arabia ◽  
Red Sea ◽  
Reservoir Model ◽  
Outcrop Analog ◽  
Digital Outcrop

scholarly journals Diagenetic Processes and Reservoir Heterogeneity in Salt-Encased Microbial Carbonate Reservoirs (Late Neoproterozoic, Oman)

Geofluids ◽  
2019 ◽  
Vol 2019 ◽  
pp. 1-19
Author(s):  
Stephan Becker ◽  
Lars Reuning ◽  
Joachim E. Amthor ◽  
Peter A. Kukla
Keyword(s):  
Carbonate Reservoirs ◽  
Salt Diapir ◽  
Strong Impact ◽  
Field Scale ◽  
Reservoir Properties ◽  
Heterogeneous Distribution ◽  
Near Surface ◽  
Porosity Reduction ◽  
Diagenetic Processes ◽  
The Impact

A common problem in dolomite reservoirs is the heterogeneous distribution of porosity-reducing diagenetic phases. The intrasalt carbonates of the Ediacaran-Early Cambrian Ara Group in the South Oman Salt Basin represent a self-sourcing petroleum system. Depositional facies and carbonate/evaporite platform architecture are well understood, but original reservoir properties have been modified by diagenesis. Some of the carbonate reservoirs failed to produce hydrocarbons at acceptable rates, which triggered this study. The extent of primary porosity reduction by diagenetic phases was quantified using point counting. To visualize the distribution of diagenetic phases on a field scale, we constructed 2D interpolation diagenesis maps to identify patterns in cementation. The relative timing of diagenetic events was constrained based on thin-section observations and stable isotope analyses. Near-surface diagenesis is dominated by reflux-related processes, leading to porosity inversion in initial highly porous facies and a patchy distribution of early cements. This strong diagenetic overprint of primary and early diagenetic porosity by reflux-related cements leads to a reduction of stratigraphic and facies control on porosity. Calcite was identified as a burial-related cement phase that leads to an almost complete loss of intercrystalline porosity and permeability. Bitumen is an important pore-occluding phase and time marker of the deep-burial realm. The stratigraphic position of the dolomite reservoirs embedded at the base of a salt diapir had a strong impact on its diagenetic development. The salt isolated the dolomites from external fluids, leading to a closed system diagenesis and the buildup of near lithostatic fluid pressures. In combination, these processes decreased the impact of further burial diagenetic processes. The study highlights that cement distribution in salt-encased carbonate reservoirs is mainly related to early diagenetic processes but can be very heterogeneous on a field scale. Further work is needed to implement these heterogeneities in an integrated numerical reservoir model.

Lithofacies, paleoenvironment and high-resolution stratigraphy of the D5 and D6 members of the Middle Jurassic carbonates Dhruma Formation, outcrop analog, central Saudi Arabia

2018 ◽  
Vol 139 ◽  
pp. 463-479 ◽  
Author(s):  
Ibrahim M. Yousif ◽  
Osman M. Abdullatif ◽  
Mohammad H. Makkawi ◽  
Mazin A. Bashri ◽  
Waleed M. Abdulghani
Keyword(s):  
Saudi Arabia ◽  
High Resolution ◽  
Middle Jurassic ◽  
Outcrop Analog
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