34 Result(s)
within
Jonny Rutqvist
Earth Sciences
-
Article
Open AccessA New Simplified Discrete Fracture Model for Shearing of Intersecting Fractures and Faults
Shearing of fractures and faults is important because it can result in permeability change or even induce seismicity—both are keys for efficient and safe energy recovery and storage in Earth systems. Quantitat...
-
Article
Open AccessThermo-Hydro-Mechanical Modeling of Brine Migration in a Heated Borehole Test in Bedded Salt
This research paper focuses on the thermo-hydro-mechanical (THM) modeling of brine migration in a heated borehole test conducted as part of the ongoing Brine Availability Test in Salt (BATS) at the Waste Isola...
-
Article
Open AccessMicroscale THMC Modeling of Pressure Solution in Salt Rock: Impacts of Geometry and Temperature
Pressure solution, a mechanism that involves tight coupling between the geometry and thermal-hydro-mechanical-chemical (THMC) processes, plays an important role in diagenesis. In this study, we make the first ...
-
Article
Creep Properties of Shale and Predicted Impact on Proppant Embedment for the Caney Shale, Oklahoma
The Caney shale is an emerging hydrocarbon play located in southwest Oklahoma, USA. Within the Caney shale exist facies which were initially dubbed “reservoir” and “ductile” based on evaluation of well logging...
-
Article
Open AccessTOUGH3-FLAC3D: a modeling approach for parallel computing of fluid flow and geomechanics
The recent development of the TOUGH3 code allows for a faster and more reliable fluid flow simulator. At the same time, new versions of FLAC3D are released periodically, allowing for new features and faster ex...
-
Article
Open AccessMulti-scale Coupled Processes Modeling of Fractures as Porous, Interfacial and Granular Systems from Rock Images with the Numerical Manifold Method
The greatest challenges of rigorously modeling coupled hydro-mechanical processes in fractured rocks at different scales are associated with computational geometry. In addition, selections of continuous or dis...
-
Article
Special Issue “Observations of Coupled Processes in Fractured Geological Media at Various Space and Time”
-
Article
Guest Editorial to the CouFrac 2018 Special Issue Coupled Thermal-Hydro-Mechanical-Chemical Processes in Fractured Media: Microscale to Macroscale Numerical Modeling
-
Article
Finite volume modeling of coupled thermo-hydro-mechanical processes with application to brine migration in salt
The disposal of heat-generating nuclear waste in salt host rock generates a thermal gradient around the waste package that may cause brine inclusions in the salt grains to migrate toward the waste package. In ...
-
Article
Open AccessMicroscale mechanical modeling of deformable geomaterials with dynamic contacts based on the numerical manifold method
Micromechanical modeling of geomaterials is challenging because of the complex geometry of discontinuities and potentially large number of deformable material bodies that contact each other dynamically. In thi...
-
Chapter
TOUGH-Based Hydraulic Fracturing Models
This chapter provides a brief overview of TOUGH-based hydraulic fracturing models, including application examples to demonstrate their capabilities. These models are all based on the linking of geomechanics co...
-
Article
Modeling Three-Dimensional Fluid-Driven Propagation of Multiple Fractures using TOUGH-FEMM
In this paper, a new numerical simulation tool named TOUGH-FEMM is presented and applied to model three-dimensional (3D) hydraulic fracturing in porous rock. The fluid flow in both fractures and porous rock is...
-
Article
Coupled Processes Modeling in Rock Salt and Crushed Salt Including Halite Solubility Constraints: Application to Disposal of Heat-Generating Nuclear Waste
This paper presents numerical modeling of coupled thermal, hydraulic and mechanical processes in rock salt and crushed salt considering halite solubility constraints. The TOUGH-FLAC simulator is used, with a r...
-
Article
Failure Monitoring and Leakage Detection for Underground Storage of Compressed Air Energy in Lined Rock Caverns
Underground compressed air energy storage (CAES) in lined rock caverns (LRCs) provides a promising solution for storing energy on a large scale. One of the essential issues facing underground CAES implementati...
-
Article
Open AccessThe Northwest Geysers EGS Demonstration Project, California: Pre-stimulation Modeling and Interpretation of the Stimulation
The Northwest Geysers Enhanced Geothermal System (EGS) demonstration project aims to create an EGS by directly and systematically injecting cool water at relatively low pressure into a known High Temperature (...
-
Article
A Discontinuous Cellular Automaton Method for Modeling Rock Fracture Propagation and Coalescence Under Fluid Pressurization Without Remeshing
We present a formulation of a discontinuous cellular automaton method for modeling of rock fluid pressure induced fracture propagation and coalescence without the need for remeshing. Using this method, modeler...
-
Article
An Approach for Modeling Rock Discontinuous Mechanical Behavior Under Multiphase Fluid Flow Conditions
In this paper, the two computer codes TOUGH2 and RDCA (for “rock discontinuous cellular automaton”) are integrated for coupled hydromechanical analysis of multiphase fluid flow and discontinuous mechanical beh...
-
Article
ISRM Suggested Method for Step-Rate Injection Method for Fracture In-Situ Properties (SIMFIP): Using a 3-Components Borehole Deformation Sensor
-
Article
Open AccessModeling of Coupled Thermo-Hydro-Mechanical Processes with Links to Geochemistry Associated with Bentonite-Backfilled Repository Tunnels in Clay Formations
This paper presents simulation results related to coupled thermal–hydraulic–mechanical (THM) processes in engineered barrier systems (EBS) and clay host rock, in one case considering a possible link to geochem...
-
Article
Characterizing Excavation Damaged Zone and Stability of Pressurized Lined Rock Caverns for Underground Compressed Air Energy Storage
In this paper, we investigate the influence of the excavation damaged zone (EDZ) on the geomechanical performance of compressed air energy storage (CAES) in lined rock caverns. We conducted a detailed characte...
