Toward Retrieving Distributed Aquifer Hydraulic Parameters From Distributed Strain Sensing

Zhang, Yi; Lei, Xinglin; Hashimoto, Tsutomu; Xue, Ziqiu

doi:10.1029/2020jb020056

Cited by 8 publications

(4 citation statements)

References 68 publications

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“…where (Zhang et al, 2021). DSS, however, is sensitive to around 1 microstrain, while DAS was able to resolve 1 nanostrain in our experiments.…”

Section: Das Acquisitioncontrasting

confidence: 62%

“…Strain along the fiber,

{{\epsilon}}_{z}

, is computed by integrating through time. Previous researchers have used a similar technology, DSS to monitor aquifer strains in response to injection and pumping (Zhang et al., 2021). DSS, however, is sensitive to around 1 microstrain, while DAS was able to resolve 1 nanostrain in our experiments.…”

Section: Methodsmentioning

confidence: 99%

“…Depending on the time scale required, two methods are used. For slow strain, distributed strain sensing (DSS) is the method of choice as it can measure distributed strain over periods of days or years (Sun et al., 2020; Zhang et al., 2021). For more rapid strain, distributed acoustic sensing (DAS) is the method of choice as it can measure strains reliably at frequencies between mHz and kHz (Becker et al., 2019; Becker et al., 2020).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Characterization of Aquifer Poroelastic Response to Impulse and Oscillatory Well Pressure Using Distributed Acoustic Sensing

Becker

Harris

Pevzner

2023

Geophysical Research Letters

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The storage of fluids in the subsurface is critical for a broad spectrum of applications including managed aquifer recharge, storage of liquefied carbon dioxide and hydrogen, geothermal heat extraction and exploitation of hydrocarbon. It is surprising then, that there has been relatively little measurement of the vertical distribution of poroelastic storage in geologic formations as compared with permeability. We present experiments in which fluid was injected into an important regional aquifer and the depth‐dependent strain response measured using fiber optic distributed acoustic sensing. The formation expansion and contraction in response to fluid injection were several 100 nanostrain. Strain, and the implied storage distribution, was highly localized in specific strata and demonstrated complex, hydromechanical behavior. This new window into fluid‐geomechanical coupling undermines some typically use models and observations currently in practice, but provides potential for complete representation and prediction of fluid storage in the subsurface.

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“…where (Zhang et al, 2021). DSS, however, is sensitive to around 1 microstrain, while DAS was able to resolve 1 nanostrain in our experiments.…”

Section: Das Acquisitioncontrasting

confidence: 62%

“…Strain along the fiber,

{{\epsilon}}_{z}

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Characterization of Aquifer Poroelastic Response to Impulse and Oscillatory Well Pressure Using Distributed Acoustic Sensing

Becker

Harris

Pevzner

2023

Geophysical Research Letters

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“…Point sensors, which measure a physical property (temperature, pressure, strain) at a particular point, are among the most widely used FO sensors. In contrast, distributed sensors measure the change of a physical property along all, or a certain part, of an optical fiber (e.g., Bao and Chen 2012;Zhang et al 2021).…”

Section: Principle Of Fiber-optic Pressure Measurementsmentioning

confidence: 99%

Fiber Optic Pressure Measurements Open Up New Experimental Possibilities in Hydrogeology

Leven¹,

Barrash

2021

Groundwater

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Fiber-optic (FO) technology is being used increasingly for measurement methods in a variety of environmental applications. However, FO pressure transducers are rarely used in hydrogeological applications. We review the current state of Fabry-Pérot interferometry-based FO pressure transducers, including their advantages and limitations, as another option for high-resolution pressure-or head-change measurements in conventional or advanced aquifer testing. Resolution and precision specifications of FO transducers meet or exceed commonly used non-FO pressure transducers. Due to their design, FO transducers can be used in small-diameter (inner diameter ≥1/4 inch) and continuous multichannel tubing (CMT), sampling points, multilevel packer systems, and Direct Push-based in situ installations and testing. The small diameter of FO transducers provides logistical advantages-especially for tests with monitoring at many zones in a number of wells and/or CMTs (e.g., no reels, placement just below water level in access tubes vs. within isolated zones, reduced weight and volume, small footprint at single point of data acquisition). Principal limitations are small measurement drift that may become evident for tests longer than a few hours, and higher-than-average cost. We present field examples of FO transducer performance in short-term tests with high consistency of acquired data and higher resolution (i.e., capturing significant hydrologic information) compared with commonly used non-FO transducers. Given the above, including advantageous logistical features, FO transducers can open new experimental possibilities in areas of high-resolution three-dimensional (3D) heterogeneity (flow and transport, remediation, critical zones); 3D fracture networks and fundamental hydromechanical behavior; complex 3D flow and leak detection (mines, dams, repositories, geothermal systems).

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Simulation-based evaluation of the effectiveness of fiber-optic sensing in monitoring and optimizing water circulation in next-generation enhanced geothermal systems

Liu¹,

Liu²,

Jin³

et al. 2023

Geoenergy Science and Engineering

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Toward Retrieving Distributed Aquifer Hydraulic Parameters From Distributed Strain Sensing

Cited by 8 publications

References 68 publications

Characterization of Aquifer Poroelastic Response to Impulse and Oscillatory Well Pressure Using Distributed Acoustic Sensing

Characterization of Aquifer Poroelastic Response to Impulse and Oscillatory Well Pressure Using Distributed Acoustic Sensing

Fiber Optic Pressure Measurements Open Up New Experimental Possibilities in Hydrogeology

Simulation-based evaluation of the effectiveness of fiber-optic sensing in monitoring and optimizing water circulation in next-generation enhanced geothermal systems

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