Yves Guglielmi
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View article: Multi-Scale Hydraulic and Petrophysical Characterization of a Heterogeneous Fault Zone in the Gotthard Massif's Crystalline Basement
Multi-Scale Hydraulic and Petrophysical Characterization of a Heterogeneous Fault Zone in the Gotthard Massif's Crystalline Basement Open
Accurately characterizing fault zones in crystalline basement rocks is essential for understanding fluid migration in the Earth's crust and how this influences fault stability and seismicity. While it is known that fault zones exhibit stro…
View article: Factors controlling injection-induced rupture of intersecting faults during geological sequestration of CO2
Factors controlling injection-induced rupture of intersecting faults during geological sequestration of CO2 Open
View article: Modeling supercritical CO2 injection induced rupture of a minor fault embedded in a poroelastic layered reservoir-caprock system
Modeling supercritical CO2 injection induced rupture of a minor fault embedded in a poroelastic layered reservoir-caprock system Open
CO2 injection for geologic carbon sequestration involves hydromechanical processes that lead to changes in fluid pressure and stresses that can activate existing faults. This paper presents a new method and workflow of modeling fault activ…
View article: Hydromechanical Modeling of Fault Rupture in Geologic CO<sub>2</sub> Sequestration: A Comparison of Two Failure Criteria
Hydromechanical Modeling of Fault Rupture in Geologic CO<sub>2</sub> Sequestration: A Comparison of Two Failure Criteria Open
The large‐scale implementation of geological carbon sequestration has raised concerns about potential fault activation and induced seismicity, which could compromise storage integrity and pose seismic risks. We theoretically compared two f…
View article: Frictional Stability and Permeability Enhancement of a Natural Granite Fracture under Monotonic and Cyclic Fluid Injections
Frictional Stability and Permeability Enhancement of a Natural Granite Fracture under Monotonic and Cyclic Fluid Injections Open
View article: Control Mechanisms for Self‐Sealing in Activated Clay‐Rich Faults Through Controlled Hydraulic Injection Experiment
Control Mechanisms for Self‐Sealing in Activated Clay‐Rich Faults Through Controlled Hydraulic Injection Experiment Open
In a high‐pressure injection fault activation experiment conducted at the Mont Terri underground research laboratory in Switzerland, the transmissivity of the Opalinus Clay fault significantly increased due to opening and shearing. The flu…
View article: The EGS Collab project: Outcomes and lessons learned from hydraulic fracture stimulations in crystalline rock at 1.25 and 1.5 km depth
The EGS Collab project: Outcomes and lessons learned from hydraulic fracture stimulations in crystalline rock at 1.25 and 1.5 km depth Open
View article: Modeling injection-induced fault slip using long short-term memory networks
Modeling injection-induced fault slip using long short-term memory networks Open
View article: Exploring the Hydro-Mechanical Behavior of Fractures Utilizing the mini-SIMFIP Probe
Exploring the Hydro-Mechanical Behavior of Fractures Utilizing the mini-SIMFIP Probe Open
The SIMFIP (Step-rate Injection Method for Fracture In-situ Properties) probe is a downhole displacement tool designed to measure injection-driven fracture displacement in an isolated borehole interval in three dimensions. The resulting di…
View article: Hydraulic Stimulation Experiments in a Decimeter-scale True Triaxial Compressive Apparatus
Hydraulic Stimulation Experiments in a Decimeter-scale True Triaxial Compressive Apparatus Open
Geothermal energy is considered a sustainable energy source for the transition to a carbon-neutral economy. In Central Europe, sufficiently hot source rocks are buried deep underground and comprise tight crystalline basement formations. To…
View article: Managing Large-Scale Geologic Storage of CO2 in the United States: Geomechanical Impacts, Basin-Scale Coordination, and Regulatory Implications
Managing Large-Scale Geologic Storage of CO2 in the United States: Geomechanical Impacts, Basin-Scale Coordination, and Regulatory Implications Open
After decades of research on geologic carbon storage (GCS), the world seems to be moving from pilot tests and demonstration experiments to industrial-scale implementation. In the United States, the Bipartisan Infrastructure Law passed in 2…
View article: Physical properties variations in a shaly formation across a fault core
Physical properties variations in a shaly formation across a fault core Open
SUMMARY Faults in general, and in clay materials in particular, have complex structures that can be linked to both a polyphased tectonic history and to the anisotropic nature of the intact rock. Drilling through faults in shaly materials a…
View article: The Egs Collab Project: Outcomes and Lessons Learned from Hydraulic Fracture Stimulations in Crystalline Rock at 1.25 and 1.5 Km Depth
The Egs Collab Project: Outcomes and Lessons Learned from Hydraulic Fracture Stimulations in Crystalline Rock at 1.25 and 1.5 Km Depth Open
View article: Transient Analyses of Hydraulic Head in the Fault Slip Experiments in Fracture Zones of Shionohira and Kuruma Faults
Transient Analyses of Hydraulic Head in the Fault Slip Experiments in Fracture Zones of Shionohira and Kuruma Faults Open
2011年4月11日の福島県浜通りの地震(Mw6.7)時,福島県南東部に北北西から南南東に伸びる約14kmの地表変状が生じ塩ノ平断層と命名された.その南方延長上の車断層では地表変状は認められなかった.両断層の活動性評価のため,前者の活動域上の塩ノ平地点と後者の非活動域上の水上北地点で,SIMFIP法による断層スリップ試験を実施した.両地点の断層破砕部への注水に対する水圧モニタリング孔での水圧応答から,断層部を挟む領域の水理特性をGRFモデル(Barker,1988)により評…
View article: Active‐Source Seismic Imaging of Fault Re‐Activation and Leakage: An Injection Experiment at the Mt Terri Rock Laboratory, Switzerland
Active‐Source Seismic Imaging of Fault Re‐Activation and Leakage: An Injection Experiment at the Mt Terri Rock Laboratory, Switzerland Open
We conducted a time‐lapse seismic experiment utilizing automated active seismic source and sensor arrays to monitor a reactivated fault within the Opalinus clay formation at the Mont Terri Rock Laboratory (Switzerland), an analog caprock f…
View article: Geomechanical in situ testing of fault reactivation in argillite repositories
Geomechanical in situ testing of fault reactivation in argillite repositories Open
Pressurization of natural faults as a result of repository-induced effects can lead to their reactivation and permeability generation in case such features are present near disposal tunnels. Potential driving forces for such pressurization…
View article: Evaluation of Nuclear Spent Fuel Disposal in Clay-Bearing Rock - Process Model Development and Experimental Studies
Evaluation of Nuclear Spent Fuel Disposal in Clay-Bearing Rock - Process Model Development and Experimental Studies Open
This report represents the milestone deliverable M2SF-23SN010301072 “Evaluation of Nuclear Spent Fuel Disposal in Clay-Bearing Rock - Process Model Development and Experimental Studies” The report provides a status update of FY23 activitie…
View article: Modeling and experimental investigation of spent fuel disposal in crystalline rocks: FY23 progress report
Modeling and experimental investigation of spent fuel disposal in crystalline rocks: FY23 progress report Open
The objective of the crystalline disposal work packages is to advance our understanding of long-term disposal of used fuel in crystalline rocks and to develop necessary experimental and computational capabilities to evaluate various dispos…
View article: Using in-situ strain measurements to evaluate the accuracy of stress estimation procedures from fracture injection/shut-in tests
Using in-situ strain measurements to evaluate the accuracy of stress estimation procedures from fracture injection/shut-in tests Open
Fracture injection/shut-in tests are commonly used to measure the state of stress in the subsurface. Injection creates a hydraulic fracture (or in some cases, opens a preexisting fracture), and then the pressure after shut-in is monitored …
View article: Induced microseismicity and tremor signatures illuminate different slip behaviours in a natural shale fault reactivated by a fluid pressure stimulation (Mont Terri)
Induced microseismicity and tremor signatures illuminate different slip behaviours in a natural shale fault reactivated by a fluid pressure stimulation (Mont Terri) Open
SUMMARY Fault slip induced by fluid perturbation in shale formations may only lead to a sparse seismicity. However, fault slip may strongly impact the integrity of shale formations that serve as caprocks for geological reservoirs holding b…
View article: Using Distributed Fiber-optic Sensing for Tracking Caprock Fault Activation Processes
Using Distributed Fiber-optic Sensing for Tracking Caprock Fault Activation Processes Open
Identifying and monitoring the reactivation of faults and opening of fractures affecting low permeability, sealing formations in natural underground storage complexes such as Carbon Capture and Storage projects and Nuclear Waste repositori…
View article: Frictional properties of Opalinus Clay: influence of humidity, normal stress and grain size on frictional stability
Frictional properties of Opalinus Clay: influence of humidity, normal stress and grain size on frictional stability Open
SUMMARY The Opalinus Clay (OPA) is a clay-rich formation considered as a potential host rock for radioactive waste repositories and as a caprock for carbon storage in Switzerland. Its very low permeability (10−19 to 10−21 m2) makes it a po…
View article: A Project Lifetime Approach to the Management of Induced Seismicity Risk at Geologic Carbon Storage Sites
A Project Lifetime Approach to the Management of Induced Seismicity Risk at Geologic Carbon Storage Sites Open
The geologic storage of carbon dioxide (CO2) is one method that can help reduce atmospheric CO2 by sequestering it into the subsurface. Large-scale deployment of geologic carbon storage, however, may be accompanied by induced seismicity. W…
View article: Fluid migration in low-permeability faults driven by decoupling of fault slip and opening
Fluid migration in low-permeability faults driven by decoupling of fault slip and opening Open
View article: Transient evolution of permeability and friction in a slowly slipping fault activated by fluid pressurization
Transient evolution of permeability and friction in a slowly slipping fault activated by fluid pressurization Open
View article: CHENILLE: Coupled beHavior undErstaNdIng of fauLts: from the Laboratory to the fiEld
CHENILLE: Coupled beHavior undErstaNdIng of fauLts: from the Laboratory to the fiEld Open
<p>The understanding of the coupled thermo-hydro-mechanical behaviour of fault zones in naturally fractured reservoirs is essential both for fundamental and applied sciences and in particular for the safety assessment of radioactive …
View article: Long term deformation and seismic observations at the Mont Terri rock laboratory&#160;
Long term deformation and seismic observations at the Mont Terri rock laboratory  Open
<p>The Mont Terri rock laboratory, located in the Swiss Jura Mountains, is dedicated to research on argillaceous rocks. Since its founding in 1996, the objective is the hydrogeological, geochemical, and geotechnical characterisation …
View article: From Fluid Flow to Coupled Processes in Fractured Rock: Recent Advances and New Frontiers
From Fluid Flow to Coupled Processes in Fractured Rock: Recent Advances and New Frontiers Open
Quantitative predictions of natural and induced phenomena in fractured rock is one of the great challenges in the Earth and Energy Sciences with far‐reaching economic and environmental impacts. Fractures occupy a very small volume of a sub…
View article: EGS Collab: Modeling and Simulation Working Group Teleconference Series (99-128)
EGS Collab: Modeling and Simulation Working Group Teleconference Series (99-128) Open
This submission contains the presentation slides and recordings from EGS Collab Modeling and Simulation Working Group (MSWG) teleconferences number 99 through 128. These teleconferences served three objectives for the project: 1) share sim…
View article: Recommended Practices for Managing Induced Seismicity Risk Associated with Geologic Carbon Storage
Recommended Practices for Managing Induced Seismicity Risk Associated with Geologic Carbon Storage Open
The geologic storage of carbon dioxide (CO2) is one method to help reduce or eliminate atmospheric CO2 emissions. The sequestered CO2 is originally captured from the atmosphere or from a stationary industri…