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Permeability Modification option EOS7R
Hello everyone, Please, does anyone know if the permeability modification option may be used in EOS7R?
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ELEME6 Block?
Hey everyone, I used MESHMaker to create an axisymmetric mesh (RZ2D), and it created an ELEME block with 6-digit character codes (titled ELEME6). Is this due to the number of elements I requested?…
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TIMAX in INPUT File vs Time written in OUTPUT File (ECO2M)
Hi all, I do not really understand about the case, I set up the TIMAX value in PARAM block of TOUGH2 Input file with 31556952.0 (second) or around 1 year,…
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Gas relative permeability: equation ???
Hello everybody, I have one question regard the document Tough v2, in "tough v2.0 manual" , we assume krg=1-krl if Sgr=0, we found that this is very strong assumption and which is not confirmed by…
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Pressure vs CO2 DG
Hi everyone, I've asked my self a question that i can't find a plausible answer, i hope that you can help me with this. It regards to CO2 injection at 15 ºC and 33 MPa on a reservoir…
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Quick fix of a bug in ECO2N V2.0
In the ECO2N V2.0 User’s Guide, it says that setting IE(16)=1 invokes the CO2/brine mutual solubility formulation from ECO2N V1.0 for low temperature (<99C).…
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Calculating Total Density from TOUGH2/ECO2M Output file
Dear all, I am sorry maybe this is a simple questions, but I need to know it. When I run injection CO2 with eco2m module for my model with initial conditions as follow :…
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Do you have a recommended module to simulation gas condensate reservoir?
It's a deep gas condensate reservoir, what's module is good for it? What about EOS7C? Thank you very much
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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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Failure of convergence in the simple 1D flow model
Dear Sir or Madam, I just built a simple 1D flow model (EOS9). I found it could not converge with my experimental parameters, however, it worked when I changed the porosity and permeability, (i.e.…
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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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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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lacking of continuous column of CO2 from the injection point to the caprock in a sandstone reservoir model
Hi, I am injecting CO2 in a high porosity and permeability sandstone reservoir during a period of 30 years. It is an isothermal model. I have a problem with the CO2 plume.…
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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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"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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Temperatures reaching out of range in EOS2 despite no GENER block
Hi all, I am trying to run a model operating at temperatures close to the maximum modelled by TOUGH (360C) due to the system it is based on. Since this is only 13 C cooler than what is achievable by…
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MINC Varying Fracture Spacing
After reading the manual, I can't tell if it is possible to vary the fracture spacing between different gridblocks using MINC in TOUGH2. Is there a way to do that? Thanks, John
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ROCKS ; assigning to specific blocks.
So I'm basically making a lump parameter model to get familiar with Tough 2. However I want to assign 3 different ROCKS conditions three different blocks.…
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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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MINC and low permeability case problem in Tough2
Hi All, I set up a case using the MINC with 2 continua. The first continua represents the fracture and the second one represents the matrix. For this case,…
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MINC interface surface area
Dear Stefan, I have been working with MINC for some time now. Just today, I found out that the interface surface area between two adjacent cells is the same for the fracture and matrix volumes.…
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EXT2 cannot extract data from output file?
Hi everybody I use Ext2 to extract data from my output file, but it cannot work out, the generated file is empty, i don't know where is the problem? The error and output file are as follows,…
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Numerical Methods and Meshing Strategies
Hello, I am writing a research paper on different reservoir simulators in the market today. For the TOUGH simulators, I would like to get more information about the numerical methods that are used…
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Steady-state simulation of a low-type geothermal system
Dear TOUGH2 Users Good morning/afternoon This is my first post to this forum and I’d like to receive guidance and help to perform a steady-state natural simulation model of a low-type geothermal…
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Hydrostatic pressure (gravitation equilibrium)
Hello, I'm practicing TOUGH2-ECO2N module with example problem number 4. I want to simulate CO2 injection and its behavior. My model which uses just one formation (first figure) is more simpler than…