Course: Oil and Gas Infrastructure - October 16 2007
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Publications
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Jump to search filtersCarbon Sequestration in the Southwestern United States: Using the 'String of Pearls' Model for Cost and Source-to-Sink Assessments
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Coal and Clean Coal
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Understanding Carbon Sequestration
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An Update on The Integrated Assessment
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The 'String of Pearls': A Carbon Sequestration Source-Sink Matching and Cost Model
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Development of Site Screening System
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Geophysics in Radioactive Waste Management
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The 'String of Pearls': The Integrated Assessment Cost and Source-Sink Model
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The 'String of Pearls': The Integrated Assessment Cost and Source-Sink Model
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Carbon Management Research: Energy Systems Modeling Risk Assessment and Geotechnology at Sandia National Laboratories
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The String-of-Pearls: An Overview of the Integrated Assessment Model
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Southwest Regional Partnership OnCarbon Sequestration IntegratedAssessment Model: The String of Pearls
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Hydraulic fractures :
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Employing the 'String of Pearls' Integrated Assessment Model: A Carbon Sequestration Systems Analysis Tool
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The Southwest Regional Partnership on Carbon Sequestration: Phase 1 Test Case Model
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Southwest regional partnership on carbon sequestration:the 'String of Pearls' integrated assessment model
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Carbon Sequestration: The Integrated Assessment Overview
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Carbon sequestration costs and integrated assessment models: characterizing technology to develop systems insight
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The southwest regional partnership on carbon sequestration: employing the integrated assessment model for systems insight
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The Southwest Regional Partnership on carbon sequestration: employing the integrated assessment model for systems insight
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Storage Cavern Technology Development at Sandia National Laboratories %22A Cavern is not a tank%22
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Southwest regional partnership on carbon sequestration: a test case model in the San Juan Basin
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Deployment of an alternative cover and final closure of the Mixed Waste Landfill, Sandia National Laboratories, Albuquerque, New Mexico
An alternative cover design consisting of a monolithic layer of native soil is proposed as the closure path for the Mixed Waste Landfill at Sandia National Laboratories, New Mexico. The proposed design would rely upon soil thickness and evapotranspiration to provide long-term performance and stability, and would be inexpensive to build and maintain. The proposed design is a 3-ft-thick, vegetated soil cover. The alternative cover meets the intent of RCRA Subtitle C regulations in that: (a) water migration through the cover is minimized; (b) maintenance is minimized by using a monolithic soil layer; (c) cover erosion is minimized by using erosion control measures; (d) subsidence is accommodated by using a ''soft'' design; and (e) the permeability of the cover is less than or equal to that of natural subsurface soil present. Performance of the proposed cover is integrated with natural site conditions, producing a ''system performance'' that will ensure that the cover is protective of human health and the environment. Natural site conditions that will produce a system performance include: (a) extremely low precipitation and high potential evapotranspiration; (b) negligible recharge to groundwater; (c) an extensive vadose zone; (d) groundwater approximately 500 ft below the surface; and (e) a versatile, native flora that will persist indefinitely as a climax ecological community with little or no maintenance.
Geophysical characterization of subsurface barriers
An option for controlling contaminant migration from plumes and buried waste sites is to construct a subsurface barrier of a low-permeability material. The successful application of subsurface barriers requires processes to verify the emplacement and effectiveness of barrier and to monitor the performance of a barrier after emplacement. Non destructive and remote sensing techniques, such as geophysical methods, are possible technologies to address these needs. The changes in mechanical, hydrologic and chemical properties associated with the emplacement of an engineered barrier will affect geophysical properties such a seismic velocity, electrical conductivity, and dielectric constant. Also, the barrier, once emplaced and interacting with the in situ geologic system, may affect the paths along which electrical current flows in the subsurface. These changes in properties and processes facilitate the detection and monitoring of the barrier. The approaches to characterizing and monitoring engineered barriers can be divided between (1) methods that directly image the barrier using the contrasts in physical properties between the barrier and the host soil or rock and (2) methods that reflect flow processes around or through the barrier. For example, seismic methods that delineate the changes in density and stiffness associated with the barrier represents a direct imaging method. Electrical self potential methods and flow probes based on heat flow methods represent techniques that can delineate the flow path or flow processes around and through a barrier.
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