Deep Fluids in the Continents: II. Crystalline Rocks

Frape, Shaun K.; Blyth, Alexander; Blomqvist, R.; McNutt, Robert H.; Gascoyne, M.

doi:10.1016/b0-08-043751-6/05086-6

Cited by 69 publications

(85 citation statements)

References 93 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In some locations, oxygenated meteoric waters react with and oxidize sulfides in the subsurface (Frape et al, 2003). The more general case, in areas where sulfides are minor constituents of crystalline rocks, may be that sulfide oxidation has little effect on the water quality or Eh of groundwater.…”

Section: Redox Reactionsmentioning

confidence: 99%

“…Calcium-dominated deep saline groundwaters are thought to have evolved over long periods of geologic time, as long as 10 9 years (Frape et al, 2003). These are dominantly pore fluids rather than fracture fluids.…”

Section: Groundwater Compositional Changes With Depthmentioning

confidence: 99%

“…Subsurface excavations to a depth of 420 m and an array of 100 boreholes up to one kilometer deep at the Underground Research Laboratory in the Lac du Bonnet batholith provide access to groundwaters and subsurface expressions of fracture zones (elevation range approximately 300 to -100 masl; Frape et al, 2003). The large range in salinity between groundwaters near the surface and at a depth of 1,000 m is due mainly to increasing concentrations of sodium, calcium, and chlorine with depth.…”

Section: Natural Constituents As Tracers Of Groundwater Movementmentioning

confidence: 99%

“…The available data indicate that the total gas content is less than would be expected in groundwaters of the area. However, many deep saline fluids in crystalline rock contain volumetrically significant amounts of hydrocarbon gas (Frape et al, 2003).…”

Section: Groundwater Compositional Changes With Depthmentioning

confidence: 99%

“…In deeper systems dominated by calcium-rich saline fluids, both carbonate-solubility constraints and silicate reactions act to remove bicarbonate ions as precipitated calcium-and magnesium-carbonates, often adjusting the pH to levels greater than 9 (Frape et al, 2003).…”

Section: Controls On Phmentioning

confidence: 99%

See 4 more Smart Citations

Disposal systems evaluations and tool development : Engineered Barrier System (EBS) evaluation.

Rutqvist¹,

Liu²,

Steefel³

et al. 2011

View full text Add to dashboard Cite

Eric Sonnenthal (LBNL) Engineered Barrier System (EBS) Evaluation This page is intentionally left blank Engineered Barrier System (EBS) Evaluation 5 Executive SummaryKey components of the nuclear fuel cycle are short-term storage and long-term disposal of nuclear waste. The latter encompasses the immobilization of used nuclear fuel (UNF) and radioactive waste streams generated by various phases of the nuclear fuel cycle, and the safe and permanent disposition of these waste forms in geological repository environments. The engineered barrier system (EBS) plays a very important role in the long-term isolation of nuclear waste in geological repository environments. EBS concepts and their interactions with the natural barrier are inherently important to the long-term performance assessment of the safety case where nuclear waste disposition needs to be evaluated for time periods of up to one million years. Making the safety case needed in the decision-making process for the recommendation and the eventual embracement of a disposal system concept requires a multi-faceted integration of knowledge and evidence-gathering to demonstrate the required confidence level in a deep geological disposal site and to evaluate longterm repository performance.The focus of this report is the following:• Evaluation of EBS in long-term disposal systems in deep geologic environments with emphasis on the multi-barrier concept;• Evaluation of key parameters in the characterization of EBS performance;• Identification of key knowledge gaps and uncertainties;• Evaluation of tools and modeling approaches for EBS processes and performance.The above topics will be evaluated through the analysis of the following:• Overview of EBS concepts for various NW disposal systems;• Natural and man-made analogs, room chemistry, hydrochemistry of deep subsurface environments, and EBS material stability in near-field environments;• Reactive Transport and Coupled Thermal-Hydrological-Mechanical-Chemical (THMC) processes in EBS;• Thermal analysis toolkit, metallic barrier degradation mode survey, and development of a Disposal Systems Evaluation Framework (DSEF).This report will focus on the multi-barrier concept of EBS and variants of this type which in essence is the most adopted concept by various repository programs. Empasis is given mainly to the evaluation of EBS materials and processes through the analysis of published studies in the scientific literature of past and existing repository research programs. Tool evaluations are also emphasized, particularly on THCM processes and chemical equilibria. Although being an increasingly important aspect of NW disposition, short-term or interim storage of NW will be briefly discussed but not to the extent of the EBS issues relevant to disposal systems in deep geologic environments. Interim storage will be discussed in the report Evaluation of Storage Concepts FY10 Final Report (Weiner et al. 2010). Engineered Barrier System (EBS) Evaluation 6This page is intentionally left blank Engineered Barrier System (EBS) Eva...

show abstract

Section: Redox Reactionsmentioning

confidence: 99%

Section: Groundwater Compositional Changes With Depthmentioning

confidence: 99%

Section: Natural Constituents As Tracers Of Groundwater Movementmentioning

confidence: 99%

Section: Groundwater Compositional Changes With Depthmentioning

confidence: 99%

Section: Controls On Phmentioning

confidence: 99%

See 3 more Smart Citations

Disposal systems evaluations and tool development : Engineered Barrier System (EBS) evaluation.

Rutqvist¹,

Liu²,

Steefel³

et al. 2011

View full text Add to dashboard Cite

show abstract

Energetic Use of EGS Reservoirs

Saadat

Frick

Kranz

et al. 2010

Geothermal Energy Systems

View full text Add to dashboard Cite

The principle for the energetic use of EGS (enhanced geothermal system) reservoirs is based on the production of a fluid which, carries the geothermal heat, in a production well, the extraction of heat from the fluid on the surface with a heat exchanger, and the reinjection of the cooled fluid into the reservoir in an injection well. The extracted heat can be used for heat, power, or chill provision (Figure 6.1). The different technical aspects and constraints which are related to such plants are the subject of this chapter. The following sections are designed to give a general overview on the energetic utilization options and EGS plant design. The focus will be on typical EGS applications which use formation water as heat carrier, in a temperature range between 100 to about 200 • C.Other EGS plant concepts which are researched and might be realized at a few sites in the future are not discussed. Such futuristic concepts refer to EGS plants that can assess steam reservoirs and geo-pressured reservoirs or EGS plants using heat carriers other than formation water, such as CO 2 . Utilization OptionsIn the following section, the different options for energetic use of EGS reservoirs are outlined with focus on the most important thermodynamic aspects. More details on thermodynamic aspects can be obtained from the literature, for example, Ç engel and Boles (2006) and Dinçer and Rosen (2007). The goal of this section is to characterize the different utilization options based on energy efficiency and exergy efficiency considerations. Energetic ConsiderationsThe form of energy which can be supplied by any heat source mainly depends on the temperature level. For EGS plants, this is the temperature of the reservoir or, more precisely, the temperature of the produced geothermal fluid. Different energy Geothermal Energy Systems. Edited by Ernst Huenges

show abstract

The Chemical Composition of Deep Geothermal Waters and Its Consequences for Planning and Operating a Geothermal Power Plant

Stober

Bucher

2021

Geothermal Energy

View full text Add to dashboard Cite

Deep Fluids in the Continents: II. Crystalline Rocks

Cited by 69 publications

References 93 publications

Disposal systems evaluations and tool development : Engineered Barrier System (EBS) evaluation.

Disposal systems evaluations and tool development : Engineered Barrier System (EBS) evaluation.

Energetic Use of EGS Reservoirs

The Chemical Composition of Deep Geothermal Waters and Its Consequences for Planning and Operating a Geothermal Power Plant

Contact Info

Product

Resources

About