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Showing 1 to 20 of 27 for “"Caprock"”.
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The influence of caprock on blast fragmentation distribution
… the development of a small-scale model of a caprock-laden quarry blast and discusses the results from that testing. The purpose of this testing was to provide insight into the reasons for poor caprock breakage during blasting.</p> <p>Small-scale test blocks were poured using a weak mortar mix …
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Sealing potential of heterogeneous caprock in subsurface storage
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2027-08-01
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Caprock integrity evaluation for geosequestration of CO2 in depleted petroleum reservoirs.
… storage could force some amount of CO2 into the caprock, thereby altering the petrophysical and geochemical properties of the caprock. Also, CO2-brine-rock interactions during CO2 geosequestration can impact the brittleness of the formations due to changes in their mineralogical compositions …
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Chemo-hydro-mechanical effects of CO2 storage on Italian reconstituted caprock
L'abstract è presente nell'allegato / the abstract is in the attachment
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Caprock characteristics and uncertainties in geological carbon sequestration in the Illinois basin
… CO2 and the sealing ability of the overlying caprock has been identified as an important factor related to the long-term storage of CO2. Caprock research is recent and the behavior of caprocks as seals in GCS is not well understood. Geological uncertainty assessment in GCS research is often …
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Geochemical and geomechanical alteration of sandstone reservoir rock and shale caprock under representative geological carbon sequestration conditions
… properties of sandstone reservoir rock and shale caprock. In the first study, Mt. Simon Sandstone is exposed to either N₂-saturated or CO₂-saturated brine at reservoir pressure and temperature in a batch system. The next two studies focus on acidified brine flow through first, sandstone fractures …
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Passive Tomography to Image Stress Redistribution Prior to Failure on Berea Sandstone and Marcellus Shale for Caprock Integrity
… handle the volume of CO₂ injected as well as a caprock layer preventing the injection fluid from returning to the surface. Additionally, CO₂ can be used for enhanced oil recovery (EOR). To monitor the injection sites used for the CO₂ storage or EOR process, the integrity of the caprock as well …
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Experimental investigation on the effects of CO2 and acid exposure on the hydro-mechanical behaviour of a clayey caprock
L'abstract è presente nell'allegato / the abstract is in the attachment
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Endless Horizons Bed and Breakfast: A lodging retreat center
… context is rural west Texas, near Post, atop the Caprock rim. The choice was made because of the dynamic views of the Caprock landscape and, the abundant natural features. Through the open landscape, vistas, and remoteness, one can find serenity, relaxation, and solitude. The scope of the facility …
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Lithologic Controls on Bedrock Channel Morphology in the Buffalo River Basin
… in the basin. Headwater channels beneath the caprock tend to have higher chi gradient values in all lithologies than headwater channels in basins where the sandstone caprock is absent. High chi gradients in the Boone Formation, a Mississipian age limestone, typically correspond to knickpoints …
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Preliminary report on the geology of Colgrove Butte, Hettinger County, North Dakota
… extending over approximately two-thirds of the caprock area of the butte, is a bed of hard limestone averaging one foot in thickness, which is succeeded by alternate beds of marl, argillaceous limestone and calcareous clays down to a depth of 20-25 feet from the surface.</p> <p>By rough …
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Analysis of Lacustrine Deposits of Custer Lookout and Leftor Butte, Stark County, North Dakota
… units. Methods included collecting limestone caprock samples from two buttes in question, Custer Lookout and Lefor Butte. Thin sections were made to help determine paleosetting of the limestone units through petrographic analysis and fossil allochems. Fossil ostracods and a charaphyte were …
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Enhancement of temporal and spatial resolution of 2-D reflection data: application to Texaco data over Venice Dome in Plaquemines Parish, Louisiana
… extent of 2,250 ft and is covered by smooth caprock. Resolution gains after reprocessing show strata having a minimum period of 25.0 ms; the salt is imaged deeper at 2,950 ft with a more southwesterly flank and is covered by faulted caprock. Seismic horizons correlate with Pleistocene to …
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Roles of Nano- and Micro-Scale Subsurface Geochemical Reactions on Environmentally Sustainable Geologic CO2 Sequestration
… formation rock by an overlying low permeability caprock. During and after CO<sub>2</sub> injection, geochemical reactions can affect the porosity, permeability, and pollutant transport in aquifers. Despite their importance, nano- and micro-scale subsurface geochemical reactions are far from …
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CO2 Sequestration through Mineral Carbonation
… focused on the evaluation of shale as a caprock to contain CO2 within more conventional reservoirs. Such studies have concentrated on caprock mechanical integrity as it pertains to leakage instead of reactivity or geochemical modification in the shale. In this research, CO2 storage in …
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Reduced-Order Modelling and Observations of Geological Carbon Dioxide Storage
… it reaches an impermeable horizon, known as a caprock, where it subsequently spreads out due to buoyancy forces. While the CO2 is spreading, the chance of encountering potential leakage pathways increases and the potential rates of trapping also increase. In this dissertation, I combine …
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A Pre-Feasibility Assessment of Geologic CO₂ Storage, Offshore Corpus Christi
… an offshore, laterally extensive reservoir and caprock that could be useful for geologic carbon storage. This study develops a geomodel from seismic-reflection data and reservoir properties and then implements numerical simulation to consider four injection scenarios using a single injection. …
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Coupled geomechanical reservoir simulation
… for failure mechanism, fault reactivation and caprock integrity. The present work also suggests the use of Pressure Transient Analysis (PTA) to quantify the lateral fluid flow boundary type and differentiating between open, closed and infinite systems. The present work also suggests a new …
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Effect of Heating Rate on Thermally Induced Pore Water Pressure and Crack Evolution in Clay and Shales
… of applications, including their pivotal role as caprock in oil and gas reservoirs, geological storage of carbon dioxide, and nuclear waste storage. Ensuring the integrity of clay shale barriers is of paramount concern, as any compromise in their stability can lead to unintended releases of …
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Karstification of the Pennyroyal Plain Behind the Retreating Chester Escarpment: Warren, Simpson & Logan Counties, Kentucky
… as the landscape changes from a sandstone caprock plateau to a limestone sinkhole plain. The Chester Upland, capped by the Big Clifty Sandstone, possesses predominantly surface drainage and the Pennyroyal Plain, formed on Mississippian limestones, possesses considerable subsurface drainage. …
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