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Enthalpy Discrepancy
Hello There, I was just wondering what the reference state for the enthalpy of water in TOUGH2 is? The reason is I would like to define water infiltration (precipitation) with a temperature of 20˚C.…
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Non-Darcy flow of oil above bubble point
In blowout simulations of proposed (not yet drilled) oil wells in the Gulf of Mexico (Worst Case Discharge, aka WCD) a simple radial reservoir simulation model is assumed and flowing pressure bottom…
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Deliverability model to simulate landfill gas collection systems
Hello I want to model the suction in landfill gas collection systems using Deliverability model. In landfills, we set a suction pressure and it collects the gas.…
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Non-convergence when considering permeability heterogeneity
Hello again, the non-convergence problem is still unresolved when considering permeability heterogeneity in my TOUGH2/ECO2N CO2 storage model. In this model I used the default/common parameter…
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Non convergence when considering non-isothermal or molecular diffusion in TOUGH2 ECO2N
I am using TOUGHREACT V3.32 to model CO2 injection in a radial 2D mesh with different layers in the z-direction. Before running the reaction part of the problem I wanted to test the flow part was…
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CO2 storage simulation with heterogeneous perm field fails to converge
Hi all, I have a problem with building a geological CO2 storage model using the TOUGH2/ECO2N module. In this model, I considered a heterogeneous permeability field by using the PM-coefficients…
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Setting permeability anisotropy with Voronoi elements
I'm trying to define proper permeability values for each connection in my Voronoi mesh file. Essentially, my PER(1) and PER(2) values are constant and equal to one another,…
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bottom flowing pressure well on delivery
Dear All, I would like to get an estimate of the bottom flowing pressure in a well that is cross cutting several layers and sometimes several cells in the same layer (when the well is deviated for…
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Convergence becomes difficult after CO2 breakthrough (ECO2N)
Hi, I want to know why the convergence becomes difficult (so the time step becomes very small, or simulation terminates) near or after phase breakthrough.…
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MINC and MIM
Hi All, I'm comparing MINC to mobile-immobile (MIM) models, most of which focus on transport (i.e., with the diffusion as the process connecting the two domains).…
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Data file Problem No.6 (*Case6_50kg_DP*) needed
Hello all. I am trying to run an EGS-CO2 model with TOUGH2 ECO2N. Is the example file Problem No.6 (*Case6_50kg_DP*) – GCS/GHE with a double-porosity reservoir in the manual available?…
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Thermal Expansion Coefficient Of Water
Hello Forum, New poster here so please let me know if I should be looking elsewhere. I'm attempting to verify TOUGH2 against an analytical solution for 2D convective flow and one of the terms is a…
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Tough2 EOS7C Gas Production Simulation Questions
I use EOS7C to simulate gas production for 2 years. The model includes 1 overburden layer, 1 underburden layer and 1 reservoir layer. After 2 years of gas production,…
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Boundary conditions
Hi, I am modeling the injection of fluid into a porous domain through a fault. I have a created multiple zones for the domain(sand, shale and fault) and put an injection well at bottom end of the…
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TOUGH2 EOS1 viscosity
Hi, All I am using the EOS1 module to simulate fluidized sand mixing with water. I have read the tough2 manual. It seems like it is not available to modify viscosity,…
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Convergence on ITER=1
I'm running TOUGH EOS1 SC, attempting to modeling deep (7km), low permeable basement rock with an intrusion. The combination of heat and low permeability makes it quite a mission to get this baby…
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"Inactive" MINC elements
I want to make sure I'm interpreting the manual correctly as it pertains to "inactive" elements in a mesh involving MINC processing. If I place a dummy element in front of all elements that I want…
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Polygonal mesh model runs much slower than regular mesh
I'm running CO2 injection with regular and polygonal mesh model, polygonal mesh even has less elements than regular mesh cause of number of connections limitation,…
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How to use TECPLOT for interpreting T2 OUTPUT
Dear team, I have a difficulties to interpret T2 output (P-T distribution) by using TECPLOT. I created 3-D model of geothermal reservoir with 968 elements. I got error after run the ext.…
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Pore compressibility issue in EOS9
Hello. I have a quick question about EOS9. Normally, the pore compressibility is used for considering specific storage due to pore volume change in TOUGH (at the MULTI subroutine).…
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Non-isothermal models in EOS 7C
Hi All, I was trying to run the example 2 model that is included in TOUGH 2-EOS7C under a high temperature and pressure condition (100C and 30MPa) using the non-isothermal option.…
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Creating an angled domain
Hi, I want to create an angled domain to represent a fault as shown in the figure in color red. I'm using Meshmaker v1.5 to create the mesh. So far, I have managed to create a vertical domain for…
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Sensitivity Analysis
Dear All, After running a CO2 injection model, I performed a sensitivity analysis to determine the sensitivity of my model with respect to some key input parameters (i.e.…
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9.4 Problem No.4- Five-spot Geothermal Production/Injection(EOS2)
Dear all, I have been studying and trying to run this problem example in the manual cause it is similar to my Project. I'm trying to view the simulation results using TOughViewer.…
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Error 'Program received signal SIGSEGV: Segmentation fault' after increasing MGTAB
Hi, I increased the MGTAB value in the T2 file to 9000 and recompiled the code. However, when running I receive this error message: Program received signal SIGSEGV:…