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Carbonate Systems and Reservoir Characterization and Unconventional Reservoirs

Carbonate depositional environments are inherently heterogeneous because of the superposition of sedimentary and diagenetic processes during successions of relative sea level changes. Projects in the modern environment use a combination of various types of remote sensing data and surface samples to capture the spatial trend metrics of sedimentary bodies. Surface samples from northwestern Great Bahama Bank are intended to refine the facies maps of this classic modern platform system.
Understanding flow, compartmentalization and mineralization in reservoirs depends on knowledge of the 3-D architecture of sedimentary structure and fracture network in the rock volume around the borehole. Several of our projects aim to increase our understanding of the lateral and vertical heterogeneity of facies and fractures. To achieve this goal, we have developed a new generation of 3-D Ground Penetrating Radar to retrieve the sub-meter scale variability of facies and flow units from Pleistocene grainstone shoals in the Miami Oolite and for fractures in several locations around the world. Seismic data from various regions are used to examine the evolution of carbonate systems in different tectonic settings and assess the influence of tectonic activity, sea level changes and sediment supply on the carbonate depositional system. Currently, we study seismic data from the Bahamas-Cuba foreland basin to decipher carbonate platform drowning as a result of increased subsidence during the formation of this foreland basin, and to delineate the evolution of the Gulf Stream from sediment drifts in the Bahamas region.
Reservoir heterogeneities and the large-scale distribution of reservoir quality dolomite have been the focus of projects in the Mississippian Madison Formation. Currently we are assessing the dolomitization processes in the Madison Formation and the correlation of the dynamics of the evolving foreland basin on the evolution of these ramp carbonates. In addition, we continue our research in relating mechanical stratigraphy to sequence stratigraphy. These projects will provide us with a methodology to predict to a certain degree the fractures from facies and stratigraphic information.

Current Projects



Geostatistical Analysis of Diagenetic Modification of the Miami Oolite

PurkisS_CSL2018_Oolite_prosp

Project Media
     
PurkisS_C...rosp.pdf
Media Type:Media Type
File Size:2MB

 

Investigators: Sam J. Purkis and Paul (Mitch) Harris

Project Objectives:

  • Continued investigation of the co-occurrence of surfical karst pits (dolines) and shallow stratiform caves in the Miami oolite.
  • Analysis of the relationship between diagenetic modification, stratigraphy, and facies, with respect to potential fluid flow through a Pleistocene sand body.



     

Reef Development during the Oligo-Miocene Transition: A new record from the Cocinetas Basin, Colombia

KlausJ_CSL2018_Reef_prosp

Project Media
     
KlausJ_CS...rosp.pdf
Media Type:Media Type
File Size:600KB

 

Investigators: James S. Klaus and Paula A. Zapata-Ramírez

Project Objectives:

  • To investigate the changing nature of Oligocene and Miocene reef systems in the southern Caribbean.

  • To assess the relative importance of oceanographic factors compared to sea level and tectonics in reef development and coral extinctions.

  • Compare the new records from the Cocinetas Basin to a compiled database of Olio-Miocene records from the Caribbean region.



     

Carbonate Contourites and Drifts – Sedimentologic Characteristics and Dimensions

EberliG_CSL2018_contourite_prosp

Project Media
     
EberliG_C...rosp.pdf
Media Type:Media Type
File Size:5MB

 

Investigators: Gregor P. Eberli, Christian Betzler, Thomas Lüdmann, and Sara Bashah

Project Objectives:

  • Assemble a comprehensive overview of carbonate contourites and drifts from literature and from unpublished examples.
  • Relate current dominated sedimentologic processes to their products in particular to contourite/drift body architecture, facies and sedimentary structures.
  • Provide dimensions of the various contourite/drift systems.



     

Influence of Ocean Currents on the Miocene Platform Demise (Year 2)

LingA_CSL2018_miocenedrowning_prosp

Project Media
     
LingA_CSL...rosp.pdf
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File Size:1MB

 

Investigators: Anna H. M. Ling, Sara Bashah, Gregor P. Eberli, and Christian Betzler

Project Objectives:

 

  • Test if ocean currents affect the demise of Miocene carbonate platforms by:

    - Assessing synchrony of current onset and platform demise by constraining the timing of both events.

    - Identifying similarities between the drowning successions of the Kardiva Platform (Maldives), Marion Plateau (Australia), west- Florida shelf edge, and the Miami Terrace.

    - Providing chemical evidence that nutrient influx did not cause the demise of the carbonate platform.



     

The Maiella Drift Fan – The Cretaceous Analog to the Coarse- Grained Carbonate Drift Fan in the Maldives

EberliG_CSL2018_Maiella_prosp

Project Media
     
EberliG_C...rosp.pdf
Media Type:Media Type
File Size:436KB

 

Investigators: Gregor P. Eberli, Emma Giddens, and Mark Grasmueck

Project Objectives:

  • Provide a detailed sedimentologic description of the coarse-grained Orfento Formation in the Maiella Mountains that is newly interpreted as a carbonate drift.
  • Give dimensions of the drift and the various elements within the drift, including the prograding lobes, slope channels and excavation moat.

  • Analyze porosity and permeability of the various drift elements and assess the reservoir potential of these types of current deposits.



     

South China Sea Oceanographic Impact on the Luconia Platforms Offshore Sarawak, Malaysia

BashahS_CSL2018_Luconia_prosp

Project Media
     
BashahS_C...rosp.pdf
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File Size:2MB

 

Investigators: Sara Bashah and Gregor P. Eberli

Project Objectives:

  • To investigate whether the demise of the carbonate platforms in the Luconia province was influenced by the strengthening of the East Asian monsoon.
  • To assess the relative importance of oceanographic factors, compared to sea level and tectonics, influencing the geometry and facies distribution of the platforms in the Luconia province.



     

Refining Habitat Mapping of Benthic Communities in the Straits of Florida

GalvezK_CSL2018_habitatmap_prosp

Project Media
     
GalvezK_C...rosp.pdf
Media Type:Media Type
File Size:708KB

 

Investigators: Kimberly C. Galvez, Jara S.D. Schnyder, Gregor P. Eberli, Mark Grasmueck, Thierry Mulder, Dierk Hebbeln, and shipboard scientists

Project Objectives: 

  • Produce habitat maps in the Straits of Florida along Great Bahama Bank using high-resolution bathymetry, backscatter, and sidescan sonar (SSS) in conjunction with images/videos from remotely operated vehicles (ROV).
  • Calibrate high-resolution backscatter data with visual data and grab samples to classify facies of the seafloor.
  • Calculate area of coral growth sites relative to shape and orientation of seafloor morphology. 


     

The Evolution of the Straits of Florida and the Miami Terrace

BashahS_CSL2018_StraitsofFL_prosp

Project Media
     
BashahS_C...rosp.pdf
Media Type:Media Type
File Size:3MB

 

Investigators: Sara Bashah, Gregor P. Eberli, Anna Ling, and CARAMBAR scientists

Project Objectives: 

  • To revise the age model for Oligocene to Pliocene deposits throughout the Straits of Florida.

  • To investigate whether the partial drowning of the Florida platform was influenced by the strengthening of the Gulf Stream.

  • To assess the relative importance of oceanographic factors relative to sea level and tectonics on the evolution of the Straits of Florida.

 

 



     

Comparing the Petrophysical Characteristics of Unconventional Carbonate Reservoirs

WegerR_CSL2018_unconventional_prosp

Project Media
     
WegerR_CS...rosp.pdf
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File Size:1MB

 

Investigators: Ralf J. Weger, G. Michael Grammer, and Gregor P. Eberli and students

Project Objectives: 

  • Determine baseline values and the range of petrophysical characteristics (sonic velocity, resistivity, and nuclear magnetic resonance) in different carbonate mudrocks and tie these parameters to pore system architecture and permeability of various carbonate mudrocks.

  • Continue to evaluate and characterize the sonic, resistivity and NMR response of the Vaca Muerta and Miss Lime and add samples from the Bakken and Eagleford Shale reservoirs in attempt to establish patterns that can be utilized in these and other mudrock reservoirs.

  • Tie rock and mechanical properties to varying facies types and position within a sequence stratigraphic framework to evaluate the potential to maximize predictability of reservoir facies from wireline logs.

 

 



     

Acoustic and Electrical Calibration of Different Vaca Muerta Facies (Year 3)

Yuksek_CSL2018_VM_prosp

Project Media
     
Yuksek_CS...rosp.pdf
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File Size:527KB

 

Investigators: Mustafa K. Yüksek, Ralf J. Weger, and Gregor P. Eberli

Project Objectives: 

  • Produce a comprehensive petrophysical data set (porosity, acoustic velocity, resistivity, permeability, and pore structure) of the facies in the Vaca Muerta Formation.

  • Establish an acoustic and electrical data set for each of the Vaca Muerta facies in order to facilitate well log interpretation.

  • Define the control of mineralogy and clay content on the petrophysical properties and, in particular, the acoustic anisotropy.

  • Examine the relationship between clay content, acoustic velocity, and resistivity to find differences between ductile and brittle behavior of the mudstones of the Vaca Muerta Formation.



     

Lithologic and Geochemical Calibration of the Basal Clinoforms in the Sierra the La Vaca Muerta, Neuquén Basin, Argentina

RuedaL_CSL2018_VM_prosp

Project Media
     
RuedaL_CS...rosp.pdf
Media Type:Media Type
File Size:1018KB

 

Investigators: Laura E. Rueda, Gregor P. Eberli, Max Tenaglia, Ralf J. Weger, Donald F. McNeill, Larry Peterson, Peter K. Swart

Project Objectives: 

  • Document the facies distribution of the early to late Tithonian prograding clinoforms that contain the first high TOC interval in the Neuquén Basin.

  • Correlate high-resolution geochemical logs with lithological logs in the different depositional sub-environments to produce a geochemical calibration of the various facies in the southern, proximal portion of the basin located in the Sierra de la Vaca Muerta (SdlVM).

  • Produce a detailed model of the depositional processes within the sequence stratigraphic subdivisions.



     

Concretions as compaction proxies in the Vaca Muerta (Neuquén Basin, Argentina)

McNeillD_CSL2018_VM_prosp2

Project Media
     
McNeillD_...rosp.pdf
Media Type:Media Type
File Size:1MB

 

Investigators: Donald F. McNeill, Jara S.D. Schnyder, Ralf J. Weger, and Gregor P. Eberli

Project Objectives: 

  • To measure the compaction in lime-rich mudrock using early cemented concretions as a pre-compaction reference.


     
 

 

 

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