Related Experiment Video
Updated: Jun 15, 2025
08:38
Microfluidic Devices for Characterizing Pore-scale Event Processes in Porous Media for Oil Recovery Applications
Published on: January 16, 2018
10.4K
Characterization of Hydraulic Rock Diffusivity Using Oscillatory Pore Pressure
Dario Sciandra1,2, Iman R Kivi1,3,4, Roman Y Makhnenko5
1Global Change Research Group (GCRG), IMEDEA, CSIC-UIB, Esporles, Spain.
Transport in Porous Media
|May 16, 2025
Summary
This study uses periodic signals to analyze subsurface rock properties for energy applications. Analytical and numerical models accurately characterize hydraulic diffusivity, aiding in real-time monitoring and risk reduction.
Area of Science:
- Geosciences
- Subsurface Energy Resources
- Rock Physics
Background:
- Increasing interest in deep geological resources for energy necessitates accurate in situ rock characterization.
- Monitoring subsurface signals aids in understanding geological formations and reducing operational risks.
Purpose of the Study:
- To improve understanding of injection-induced pore pressure oscillations in confined formations.
- To characterize hydraulic diffusivity using periodic signals in subsurface energy applications.
Main Methods:
- Revisiting analytical solutions for cyclic pore pressure diffusion in 1D/axisymmetric geometries.
- Comparing analytical solutions with numerical simulations (hydraulic and hydro-mechanical models).
- Investigating applications in energy storage, CO₂ storage caprock, and enhanced geothermal systems.
Main Results:
- Analytical and numerical solutions show excellent agreement (<3% error) across diverse geological scenarios.
- Wave propagation distances vary significantly (cm to km) depending on the application.
- Analytical solutions offer rapid initial approximations, complementing detailed numerical models.
Conclusions:
- Simplified analytical tools can facilitate real-time interpretation for subsurface energy monitoring.
- Bridging analytical and numerical approaches enhances practical subsurface characterization.
- Accurate characterization of hydraulic diffusivity is crucial for safe and efficient deep geological resource management.
Related Concept Videos
01:07Damped Oscillations
5.7K
In the real world, oscillations seldom follow true simple harmonic motion. A system that continues its motion indefinitely without losing its amplitude is termed undamped. However, friction of some sort usually dampens the motion, so it fades away or needs more force to continue. For example, a guitar string stops oscillating a few seconds after being plucked. Similarly, one must continually push a swing to keep a child swinging on a playground.
Although friction and other non-conservative...
Although friction and other non-conservative...
5.7K
01:03Application of Pascal's Law
8.4K
Pascal's experimentally proven observations—that a change in pressure applied to an enclosed fluid is transmitted undiminished throughout the fluid and to the walls of its container—provide the foundations for hydraulics, one of the most important developments in modern mechanical technology.
Hydraulic systems are used to operate automotive brakes, hydraulic jacks, and numerous other mechanical systems. We can derive a relationship between the forces in a simple hydraulic system...
Hydraulic systems are used to operate automotive brakes, hydraulic jacks, and numerous other mechanical systems. We can derive a relationship between the forces in a simple hydraulic system...
8.4K
01:30Typical Model Studies
349
Fluid mechanics model studies often utilize scaled-down systems to predict fluid behavior in full-scale environments, such as river flows, dam spillways, and structures interacting with open surfaces. Maintaining Froude number similarity in river models is crucial, as it replicates surface flow features like wave patterns and velocities.
349
01:27Uniform Depth Channel Flow
63
Uniform depth channel flow keeps fluid depth consistent along channels such as irrigation canals. In natural channels, such as rivers, approximate uniform flow is often assumed. This condition occurs when the channel’s bottom slope matches the energy slope, balancing potential energy lost from gravity with head loss due to shear stress. This balance prevents depth changes along the channel length, resulting in a steady, uniform flow.Uniform flow in open channels with a constant cross-section...
63
01:17Sound as Pressure Waves
2.4K
Sound waves, which are longitudinal waves, can be modeled as the displacement amplitude varying as a function of the spatial and temporal coordinates. As a column of the medium is displaced, its successive columns are also displaced. As the successive displacements differ relatively, a pressure difference with the surrounding pressure is created. The gauge pressure varies across the medium.
The pressure fluctuation depends on the difference in displacements between the successive points in the...
The pressure fluctuation depends on the difference in displacements between the successive points in the...
2.4K
01:24Rapidly Varying Flow
56
Rapidly varying flow (RVF) in open channels is characterized by abrupt changes in flow depth over a short distance, with the rate of depth change relative to distance often approaching unity. These flows are inherently complex due to their transient and multi-dimensional nature, making exact analysis difficult. However, approximate solutions using simplified models provide valuable insights into their behavior.Key Features of Rapidly Varying FlowRVF is commonly observed in scenarios involving...
56