Pressure transient technique to constrain CO2 plume boundaries

Tran, Nam H.; Zeidouni, Mehdi

doi:10.1007/s12665-018-7926-0

Cited by 4 publications

(2 citation statements)

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“…Further developments of FO systems should target (1) eliminating the long-term drift to allow longterm pressure-change measurements, and (2) enabling distributed transducer/signal conditioner operation with wireless control that can be deployed at relatively distant locations. Such improvements would not only expand the time and size scales of testing methods noted above, but would enable broader applications to engineering and infrastructure (nuclear waste repositories, mines, dams, tunnels, CO 2 sequestration, fracking, geothermal, ...) such as pressure pulse testing for CO 2 leakage detection and monitoring at CCS sites (e.g., Shakiba and Hosseini 2016;Tran and Zeidouni 2018;Hosseini 2019) or in the context of hydromechanical characterization and including (deep) underground structures such as geological repositories (e.g., Beauheim et al 2014;Bishop et al 2020;Brixel et al 2020), and excavation damaged zones (e.g., Bossart et al 2002;Marschall et al 2017), or geothermal systems (e.g., Borello et al 2019;Fan et al 2020;Kittila et al 2020).…”

Section: Recommendations For Fo Transducer System Improvements To Expand Testing Possibilitiesmentioning

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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Section: Recommendations For Fo Transducer System Improvements To Expand Testing Possibilitiesmentioning

confidence: 99%

Fiber Optic Pressure Measurements Open Up New Experimental Possibilities in Hydrogeology

Leven¹,

Barrash

2021

Groundwater

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“…The full pressure signal is then inverted to image the plume. In addition to the aforementioned cross‐well studies, Tran and Zeidouni 44 introduced a single‐well pressure transient test to obtain the distance to the CO 2 plume edge in the overlying zone from the test well. The test is based on the contrast between the storativity of CO 2 and brine, according to which the CO 2 plume can be assumed as a constant‐pressure boundary to a rate perturbation originated from a well outside the plume.…”

Section: Introductionmentioning

confidence: 99%

Cross‐well pressure test analysis for CO₂ plume characterization based on arrival time and peak pressure change observations

Zeidouni

2021

Greenhouse Gases

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CO2 migration from the injection zone into an upper zone is possible through potential migration paths such as improperly abandoned wells or other weaknesses in the caprock overlying the injection zone. Various monitoring technologies may be used to obtain information on the resulting CO2 plume in an overlying zone. Cross‐well pressure testing—where water is to be injected/produced at a well and the pressure response to be observed at monitoring well(s)—has been previously investigated to characterize the CO2 plume. However, the methods proposed in the literature are not simple and may be computationally expensive either in forward modeling, inverse modeling, or both. For the cross‐well test analysis proposed herein, both the forward solution—a closed‐form analytical model—and the inverse model—a well‐posed overdetermined system of nonlinear equations—are simple. Consequently, a simple analysis methodology is presented to invert the cross‐well test data to obtain important information on the plume. To achieve this simplified approach, the migrated CO2 plume is assumed circular in shape with constant gaseous CO2 fraction over the plume area. The analysis methodology is first validated using a single‐phase model with a circular heterogeneity. Next, the methodology is applied to synthetic cross‐well pressure test data for a two‐phase system with CO2 plume. The arrival times and peak pressure change values from multiple monitoring wells are used to estimate the location and size of the plume. The estimated values are in good agreement with the actual plume size and locations used in generating the synthetic data. © 2021 Society of Chemical Industry and John Wiley & Sons, Ltd.

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The State of the Art in Monitoring and Verification: an update five years on

Jenkins

2020

International Journal of Greenhouse Gas Control

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Pressure transient technique to constrain CO2 plume boundaries

Cited by 4 publications

References 20 publications

Fiber Optic Pressure Measurements Open Up New Experimental Possibilities in Hydrogeology

Fiber Optic Pressure Measurements Open Up New Experimental Possibilities in Hydrogeology

Cross‐well pressure test analysis for CO₂ plume characterization based on arrival time and peak pressure change observations

The State of the Art in Monitoring and Verification: an update five years on

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Pressure transient technique to constrain CO2 plume boundaries

Cited by 4 publications

References 20 publications

Fiber Optic Pressure Measurements Open Up New Experimental Possibilities in Hydrogeology

Fiber Optic Pressure Measurements Open Up New Experimental Possibilities in Hydrogeology

Cross‐well pressure test analysis for CO2 plume characterization based on arrival time and peak pressure change observations

The State of the Art in Monitoring and Verification: an update five years on

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Product

Resources

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Cross‐well pressure test analysis for CO₂ plume characterization based on arrival time and peak pressure change observations