scholarly journals New Equipment for Complementary Petrophysical Characterization of Rocks for Deep Geological Storage

Proceedings ◽  
2018 ◽  
Vol 2 (23) ◽  
pp. 1494
Author(s):  
Pablo Cienfuegos-Suárez ◽  
Efrén García-Ordiales ◽  
Jorge Enrique Soto-Yen
Keyword(s):  
Co2 Sequestration ◽  
Chemical Processes ◽  
Geological Storage ◽  
Co2 Geological Storage ◽  
Coal Seams ◽  
Geological Formation ◽  
Physical And Chemical ◽  
Geological Formations ◽  
Selection Of

The geological storage of CO2 in coal seams is an emerging option in the portfolio of mitigation actions for reduction of atmospheric greenhouse gas concentrations. A background study focused to the selection of favorable sites for CO2 geological storage are necessary steps, and in the selection of reservoirs for CO2 sequestration a complete petrophysical characterization of the sample is necessary. To complement the classical petrophysical parameters measured on the rocks of the geological formation with potential to be used to store the injected CO2, a new equipment has been designed and constructed to simulate at a laboratory scale the inter-action between the rock and the injected CO2, at different pressure conditions simulating depths of the geological formations up to 1000 m. The design and construction of this equipment allows us to investigate known physical and chemical processes that occur between the rocks store/seal and the fluid injected into geological storage. Essays focused to study the alterability of the rock in contact with CO2 either in subcritical or supercritical state, as well as essays for CO2 injectivity on the rock can be accomplished.

Characterization of Perovskite-Like Substrates for Thin Film Superconductors using Synchrotron X-Ray Topography

1991 ◽  
Vol 35 (A) ◽  
pp. 255-261
Author(s):  
G.-D. Yao ◽  
S.Y. Hon ◽  
M. Dudley ◽  
Julia M. Phillips
Keyword(s):  
Defect Formation ◽  
Chemical Properties ◽  
Substrate Material ◽  
Formation Mechanisms ◽  
X Ray ◽  
Physical And Chemical ◽  
Insight Into ◽  
Selection Of ◽  
Potential Substrate

AbstractThe characterization of defect configurations in various perovskite-like substrate materials for high Tc superconductor epitaxial films has been conducted using white beam synchrotron X-ray topography. The substrates were found to contain crystal lattice defects such as twins, dislocations and grain boundaries. It is shown that characterization of substrates can potentially afford insight into factors controlling the properties of the high Tc superconductor tilms supported on them. This can help in the selection of optimum substrate material. Defect formation mechanisms in individual materials as well as their respective influences on the films are discussed. Comparisons between the physical and chemical properties of several potential substrate materials are presented.

THE ORIGIN OF FLORAL LAGERSTÄTTEN IN COALS

Palaios ◽  
2020 ◽  
Vol 35 (1) ◽  
pp. 22-36
Author(s):  
VERA A. KORASIDIS ◽  
MALCOLM W. WALLACE ◽  
ANNE-MARIE P. TOSOLINI ◽  
ROBERT S. HILL
Keyword(s):  
Leaf Litter ◽  
Water Table ◽  
Plant Material ◽  
Chemical Processes ◽  
Coal Seams ◽  
Exceptional Preservation ◽  
The Third ◽  
Brown Coals ◽  
Gippsland Basin ◽  
Physical And Chemical

ABSTRACT Floral Lagerstätten deposits (i.e., fossil sites with exceptional preservation and diversity) are preserved within the Miocene brown coals of the Latrobe Group, Gippsland Basin, Australia. Three independent mechanisms are conducive to their accumulation. Throughout the coal seams the conversion of plant material into charcoal (fusain) and its accumulation in a subaqueous setting provides one means of near-perfect preservation. A second and more uncommon example occurs in the form of a 20 cm thick leaf-litter horizon that extends for over two kilometers. In this case, flooding of freshwater tributaries and lakes during the early stages of low-gradient peat development resulted in an extensive, shallow, acidic and water-filled depression that subsequently accumulated and preserved the surrounding plant material. The third and most common form results from the deposition of plant material into small, isolated pools that formed as depressions on the ombrogenous (i.e., rain-fed) and domed surface of the peatlands. In all of these settings an essential component allowing detailed floral preservation is the delivery of plant material directly to the anaerobic catotelm (i.e., below the water table), hence avoiding the physical and chemical processes of degradation that typically occur in the surficial aerobic acrotelm (i.e., above the water table). Leaf litter that falls into low-energy acidic and anoxic water-filled depressions that lie below the acrotelm will likely be well-preserved.

A preferred orientation correction to describe a fiber texture under glancing incidence

2012 ◽  
Vol 46 (1) ◽  
pp. 93-98 ◽  
Author(s):  
David Simeone ◽  
Dominique Gosset ◽  
Gianguido Baldinozzi
Keyword(s):  
Thin Films ◽  
Fiber Texture ◽  
Chemical Processes ◽  
Preferred Orientation ◽  
X Ray ◽  
Point Of Interest ◽  
Scattering Geometry ◽  
Diffraction Patterns ◽  
Physical And Chemical

Much work is nowadays being devoted to the characterization of the structure and the microstructure of thin films and mesoporous materials. Different physical and chemical processes used to elaborate these thin films often induce a fiber texture in these materials. The X-ray glancing-incidence technique appears to be a useful tool for collecting diffraction patterns of thin films while avoiding the peaks of the substrate. However, the scattering vector in this asymmetric scattering geometry is not perpendicular to the surface of the sample. This point implies that the correction developed to model the effects of a fiber texture in Bragg–Brentano geometry, where the scattering vector is always normal to the surface of the sample, cannot be applied in glancing incidence. This work presents a procedure to correct the preferred orientation due to this fiber texture in asymmetric scattering geometry and then in glancing incidence. By an example, it is proved that this correction of the fiber texture is efficient. The main point of interest regarding this correction is that only a few parameters are needed to handle the effect of the fiber texture on the diffraction patterns collected in asymmetric scattering geometry and then under glancing incidence.

Coupled Two Component Fluid Flow in Deformable Porous Media – Towards a Numerical Model for Geological Carbon Storage

2014 ◽  
Vol 553 ◽  
pp. 393-400
Author(s):  
D.L. Lincoln ◽  
Terry Bennett
Keyword(s):  
Porous Media ◽  
Co2 Storage ◽  
Model Development ◽  
Element Model ◽  
Type Model ◽  
Deformable Porous Media ◽  
Geological Formation ◽  
The Stability ◽  
Physical And Chemical ◽  
Geological Formations

Carbon Sequestration by CO2 storage into deep geological formations is a short to mid-term component for mitigatingclimate change while maintaining the stability of the world’s energy systems. This storage procedure will result in a seriesof coupled physical and chemical processes within the geological formation, which may critically affect its integrityas a storage medium. This work presents the development of a finite element model, which is to collaboratively aiddesign, monitoring and risk assessment. The current emphasis of the model development is on ensuring that the inducedgeomechanical behaviour is acceptable within a given reservoir-caprock system. It is a Biot-type model, whereby theinteractions of the flow of the fluids and the mechanical behaviour of the porous media are fully coupled. The governingequations are outlined and solved using numerical methods. For assessment, a simplified benchmark storage scenario ismodelled with realistic parametrisation.

scholarly journals Reserves and resources for CO2 storage in Europe: the CO2StoP project

1969 ◽  
pp. 85-88
Author(s):  
Niels Poulsen ◽  
Andrei Bocin-Dumitriu ◽  
Sam Holloway ◽  
Karen Kirk ◽  
Filip Neele ◽  
...  
Keyword(s):  
Power Plants ◽  
Point Sources ◽  
Geological Storage ◽  
Co2 Geological Storage ◽  
Large Power ◽  
Storage Location ◽  
Deep Underground ◽  
And Storage ◽  
Geological Formations ◽  
Co2 Release

Th e challenge of climate change demands reduction in global CO2 emissions. In order to fi ght global warming many countries are looking at technological solutions to keep the release of CO2 into the atmosphere under control. One of the most promising techniques is carbon dioxide capture and storage (CCS), also known as CO2 geological storage. CCS can reduce the world’s total CO2 release by about one quarter by 2050 (IEA 2008, 2013; Metz et al. 2005). CCS usually involves a series of steps: (1) separation of the CO2 from the gases produced by large power plants or other point sources, (2) compression of the CO2 into supercritical fl uid, (3) transportation to a storage location and (4) injecting it into deep underground geological formations.

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