Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 20 for “"organic rich shales"”.
-
Microporoelastic modeling of organic-rich shales
Due to their abundance, organic-rich shales are playing a critical role in re-defining the world's energy landscape leading to shifts in global geopolitics. However, technical challenges and environmental concerns continue to contribute to the slow growth of organic-rich shale exploration and …
-
THE APPLICATION OF OXIDATIVE HYDROTHERMAL DISSOLUTION (OHD) TO ORGANIC-RICH SHALES
… at Southern Illinois University to convert solid organic material to low-molecular-weight, water-soluble products using small amounts of dissolved oxygen in liquid water at high temperature and pressure. The process is environmentally friendly; it does not involve the use of solvents or catalysts, …
-
Quantity and isotopic composition of reduced sulfur in Cretaceous organic-rich shales
Over 200 samples of mid-Cretaceous organic-rich sediment were examined to determine abundance and isotopic composition of reduced sulfur. Mid-Cretaceous pelagic sediments, particularly those of the North and South Atlantic, are characterized by high organic carbon contents relative to the modern …
-
Characterization of anisotropy in organic-rich shales: shear and tensile failure, wave velocity, matrix and fracture permeability
Lamination and fractures are common features in organic-rich shales. The objective of this thesis is to determine the impact of lamination and fractures on elastic properties, shear and tensile failures, and the permeability of organic-rich shales. The elastic properties of rocks determine the …
-
Effect of thermal maturity on nanomechanical properties and porosity in organic rich shales (a Bakken shale case study)
… the load bearing state of the minerals and organic matter and affect pore system since early stages of maturation. Generating representative rock models to describe the behavior of organic-rich rocks is challenging due to complex textural properties of these rocks and the uncertainties in …
-
Sequence Stratigraphy and Source Rock Characterization of Organic-Rich Shales Within the Jurassic Smackover Formation, Conecuh Embayment, Alabama, U.S.A.
… layers containing abundant terrestrially derived organic matter within the Smackover Formation. The shale layers provide interesting insight into the sequence stratigraphy and paleoclimate of the Conecuh Embayment, and the source of the hydrocarbons accumulated there. The two shale layers reach a …
-
GEOCHEMISTRY OF THERMALLY ALTERED COALS AND ORGANIC-RICH SHALES: THE IMPACT OF RAPID HEATING ON PHYSICAL AND CHEMICAL PROPERTIES OF ORGANIC MATTER
… and petrographic properties of sedimentary organic matter (such as coals and organic-rich clays or shales) including vitrinite reflectance, maceral petrographic composition, mineralogy, stable isotope composition, trace element composition, and bulk geochemistry. Igneous intrusions into …
-
Microfaunal investigation of the Early Toarcian (Lower Jurassic) extinction event in N.W. Europe
… nd was associatedw ith the deposition of organic-rich shales. The development of anoxia coincides with a notable period of mass extinction of the marine fauna. High resolution sampling and study of the microfaunast hrough sequencesin N. W. Europe confirm that benthic foraminiferal. faunas …
-
Geo-chemo-mechanical modeling of sedimentary rocks: application to unconventional reservoirs and geological CO2 sequestration
… geopolitics. The recovery of oil and gas from organic-rich shales, geological sequestration of CO2 in sandstone host rocks and storage of nuclear waste in impermeable rocks are among the most challenging problems worldwide. Technical challenges and environmental concerns slow the growth of …
-
Post-depositional structural changes in clay sediments
… in which the development of fissility in shales and the formation of hydrocarbon source rocks are attributed to the chemical conditions at the time of deposition. The geotechnical properties of fresh sediments are considered and the ability of the depositional environment to affect these …
-
Applying Solid-state NMR Methods to the Study of Organic Shale Rocks
Over the past twenty years, organic-rich shales have emerged as valuable systems for potential oil and gas production. Shale reservoirs are usually low in porosity, ultralow in permeability, and contain hydrogen-rich organic materials, making traditional low-field 1H NMR relaxation methods …
-
Monitoring CO2 Plume Migration for a Carbon Storage-Enhanced Coalbed Methane Recovery Test in Central Appalachia
… formations, oil and natural gas reservoirs, organic-rich shales, and unmineable coal reservoirs. Coal seams are an attractive reservoir for CO2 storage due to coal's large capacity to store gas within its microporous structure, as well as its ability to preferentially adsorb CO2 over …
-
Bulk Rock Major and Trace element Chemostratigraphy of the Cretaceous Lower Eagle Ford Formation in South Texas
… which produces oil, condensate, and gas from its organic-rich shales deposited in the Late Cretaceous. Twenty-three whole rock samples of the Lower Eagle Ford from a 120.85 ft core from La Salle County, Texas were studied to evaluate major and trace elements to examine the environment at time of …
-
Modeling Storage and Flow of Fluids in Shale Reservoirs
… of fluid storage and transport mechanisms in shales, and uses new methods for characterization in exploring enhanced recovery options for shale-hosted hydrocarbons. The primary gas storage mechanisms in organic-rich shales are free gas storage and adsorption; however, there is a significant …
-
Analysis of petroleum source rocks of the Bakken Formation (Devonian and Mississippian) in North Dakota
… North Dakota consists of upper and lower, black, organic-rich shales separated by a calcareous siltstone middle member. The formation is a relatively thin unit (maximum thickness of 145 feet) with the lower shale .attaining a maximum thickness of 50 feet and the upper shale a maximum thickness of …
-
Anisotropic analysis of unconventional reservoirs using rock physics model: Eagle Ford shale case study
… thesis, I present a novel rock physics model for organic-rich shales. The extended Maxwell homogenization scheme is utilized as a rock physics model for transversely isotropic media. Since shales have complex structures, different components of the rock are modeled as multiple inclusions. First, I …
-
Geomechanical property changes with hydrous pyrolysis in Mahogany oil shale in Green River Formation
The formation characteristics of organic-rich shales have proven to be affected by mineralogical composition, total organic content, water concentration, and bedding-plane orientation along with other parameters. However, it is not known with good accuracy what types of influence thermal maturation …
-
Anisotropic analysis of unconventional reservoirs using rock physics model: Eagle Ford shale case study
… thesis, I present a novel rock physics model for organic-rich shales. The extended Maxwell homogenization scheme is utilized as a rock physics model for transversely isotropic media. Since shales have complex structures, different components of the rock are modeled as multiple inclusions. First, I …
-
Characterizing ancient chemoclines through the use of pigment biomarkers and sedimentary stable isotope signatures
… and the stable carbon and nitrogen isotopes of organic matter. The central aim of the research comprising this volume is to identify how chemocline fluctuations are expressed in the pigment and stable isotope signatures of aquatic sediments, and how those fluctuations may have impacted nutrient …
-
Borehole Breakouts in Transversely Isotropic Posidonia Shale
… when drilling through finely laminated, organic rich shales (Økland and Cook, 1998; Ottesen, 2010; etc.); such instabilities should be avoided to assure a successful exploitation and safe production of the contained unconventional hydrocarbons. Borehole instabilities, such as borehole …