Fluid mobility and frequency-dependent seismic velocity — Direct measurements

Batzle, Michael; Han, De‐hua; Hofmann, Ronny

doi:10.1190/1.2159053

Cited by 479 publications

(374 citation statements)

References 42 publications

(44 reference statements)

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“…This indicates that increasing the viscosity of the pore fluid moves the dispersion effects to occur at lower seismic frequencies. This agrees well with the concept of fluid mobility, defined as the ratio between permeability and viscosity by Batzle et al (2006). Overall, the maximum P-and S-wave attenuation values are larger for brine than for the other two fluids.…”

Section: The Fluid Effectsupporting

confidence: 78%

Diagnostics of seismic time-lapse effects of sandstones based on laboratory data

Moyano

Johansen

Agersborg³

et al. 2014

GEOPHYSICS

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We evaluated a viscoelastic modeling of P-and S-wave velocity dispersion, attenuation, pressure, and fluid effects for a set of siliciclastic rock samples. Our analysis used a published laboratory data set of 63 sandstones with a wide range of compositional heterogeneities. We observed a notable correlation between the (velocity and attenuation) pressure sensitivity and the abundance/lack of quartz in the samples. We included compliant pores (low-aspect ratio) proportionally to the content of secondary minerals to account for the differential sensitivity to pressure. The observed velocity and attenuation were well reproduced by the applied viscoelastic modeling. We found that pores of significantly different scale required pore fluid relaxation time constants of proportionally different magnitudes to reproduce the velocity and attenuation measurements. The relaxation time constant of crack-sized pores can be one order of magnitude smaller than the constant of mesopores. Moreover, the velocity dispersion and attenuation signatures revealed that a pore textural model dependent on lithological composition is critical in the prediction of time-lapse fluid and pressure responses.

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Section: The Fluid Effectsupporting

confidence: 78%

Diagnostics of seismic time-lapse effects of sandstones based on laboratory data

Moyano

Johansen

Agersborg³

et al. 2014

GEOPHYSICS

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“…Corresponding laboratory experiments are already conducted for seismic purposes [e.g., Batzle et al, 2006] and could be extended to seismoelectric measurements. Although our analysis was performed considering laboratory-size samples, the results of this study also have corresponding implications for seismoelectric conversions at the field scale.…”

Section: Discussionmentioning

confidence: 99%

Seismoelectric effects due to mesoscopic heterogeneities

Jougnot

Rubino

Rosas‐Carbajal

et al. 2013

Geophysical Research Letters

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[1] While the seismic effects of wave-induced fluid flow due to mesoscopic heterogeneities have been studied for several decades, the role played by these types of heterogeneities on seismoelectric phenomena is largely unexplored. To address this issue, we have developed a novel methodological framework which allows for the coupling of wave-induced fluid flow, as inferred through numerical oscillatory compressibility tests, with the pertinent seismoelectric conversion mechanisms. Simulating the corresponding response of a water-saturated sandstone sample containing mesoscopic fractures, we demonstrate for the first time that these kinds of heterogeneities can produce measurable seismoelectric signals under typical laboratory conditions. Given that this phenomenon is sensitive to key hydraulic and mechanical properties, we expect that the results of this pilot study will stimulate further exploration on this topic in several domains of the Earth, environmental, and engineering sciences. Citation: Jougnot, D., J. G. Rubino, M. Rosas Carbajal, N. Linde, and K. Holliger (2013), Seismoelectric effects due to mesoscopic heterogeneities, Geophys.

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“…Examples include the phenomena encountered in rock physics, where ultrasound up to 1 GHz has been deployed on small samples at both elevated temperature and pressure. 63,64,65 These methods are also being used to measure properties such as density, viscosity, and particle size in process industries and at the DOE Hanford Waste Treatment Plant (WTP). Such methods are being considered for various applications in fuel reprocessing facilities.…”

Section: Ultrasonic Transducersmentioning

confidence: 99%

New In-pile Instrumentation to Support Fuel Cycle Research and Development

Rempe¹,

MacLean²,

Schley³

et al. 2011

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SUMMARYNew and enhanced nuclear fuels are a key enabler for new and improved reactor technologies. For example, the goals of the next generation nuclear plant (NGNP) will not be met without irradiations successfully demonstrating the safety and reliability of new fuels. Likewise, fuel reliability has become paramount in ensuring the competitiveness of nuclear power plants. Recently, the Office of Nuclear Energy in the Department of Energy (DOE-NE) launched a new direction in fuel research and development that emphasizes an approach relying on first principle models to develop optimized fuel designs that offer significant improvements over current fuels. To facilitate this approach, high fidelity, real-time, data are essential for characterizing the performance of new fuels during irradiation testing. A three-year strategic research program has been initiated for developing the required test vehicles with sensors of unprecedented accuracy and resolution for obtaining the data needed to characterize three-dimensional changes in fuel microstructure during irradiation testing. When implemented, this strategy will yield test capsule designs that are instrumented with new sensor technologies for irradiations at facilities primarily relied upon by the Fuel Cycle Research and Development (FCR&D) program, the Advanced Test Reactor (ATR) and the High Flux Isotope Reactor (HFIR). Prior laboratory testing, and as needed, irradiation testing of sensors in these capsules will have been completed to give sufficient confidence that the irradiation tests will yield the required data.From the onset of this instrumentation development effort, it was recognized that obtaining these sensors must draw upon the expertise of a wide-range of organizations not currently supporting nuclear fuels research. Hence, a draft version of this document was developed to provide necessary background information related to fuel irradiation testing, desired parameters for detection, and an overview of currently available in-pile instrumentation. Then, a workshop was held in which U.S. and foreign experts from fuels, irradiation, and instrumentation fields participated. Prior to this workshop, copies of a draft version of this document were distributed to participants to stimulate expert interactions at this meeting. During the workshop, candidate sensor technologies identified in this document were discussed and ranked by the experts using agreed upon criteria. The final version of this document describes the consensus reached during the workshop with respect to recommendations for the path forward for accomplishing the goals of this research program.Based on the activities completed to develop this strategic plan, it is recommended that the FCR&D instrumentation development program be initiated as a three year program that includes the following three tasks:• Ultrasonics-Based Evaluations -In this task, laboratory evaluations and necessary irradiations will be completed to demonstrate the viability of this technology for in-pile applications. Specif...

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Fluid mobility and frequency-dependent seismic velocity — Direct measurements

Cited by 479 publications

References 42 publications

Diagnostics of seismic time-lapse effects of sandstones based on laboratory data

Diagnostics of seismic time-lapse effects of sandstones based on laboratory data

Seismoelectric effects due to mesoscopic heterogeneities

New In-pile Instrumentation to Support Fuel Cycle Research and Development

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