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EOS7C poor convergence, e.g., in subroutine SOLIT
EOS7C v.1 models five components (water, brine, CO2 or N2, tracer, and CH4) and heat. Many users have noticed that time-step convergence can become poor during CO2 injection problems,…
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Defining a multi-layered aquifer in TOUGH2
Dear All, I am trying to simulate a sandstone aquifer capped by two sealing layers (Shale and evaporite), so there are totally 3 layers in my model. I think there are two blocks in the input file…
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Time stepping in dry-out zones
Hello all, I know it is a general question, but any hint will be appreciated. I am running a 3D model of CO2 injection into a layered aquifer using the ECO2N module.…
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Question on the block of CONNE
Hello everyone, I have a question on the block of CONNE. Whether can I only input part of the connections between two cells instead of all the connections?…
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TOUGHREACT1.2/ECO2N: About the inject rate and maximum pressure
Hi, everyone I'm using TOUGHREACT1.2/ECO2N with Petrasim. I am simulating the injection of CO2(isothermal) at a constant rate of 6.5kg/s(just one GENER)using a rectangle mesh,…
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Converting single porosity mesh into dual porosity (dual-perm) mesh
By any chance, does anyone know a way of converting single porosity mesh elements file into dual porosity (dual-perm) mesh model file (with correct connections)? Would appreciate any feedback.…
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Simulated CO2 injection into aquifers using T2WELL/ECO2M did not run successfully
Dear TOUGH community users, I am new to T2WELL/ECO2M and I am simulating CO2 injection into the aquifer, establishing a model of 0~-900m, the aquifer is located at -750~-800m,…
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CO2 storage in saline aquifer with ECO2N
Hello All, I am working on CO2 storage using ECO2N. In the output file, we have the following variables. "P T SG SS XNACL YH2OG XCO2aq PCAP k-red" How can I calculate the Mobile CO2,…
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ECO2M:run is not convergent
Dear TOUGH community users, I am using T2WELL/ECO2M to simulate the injection of CO2 into the aquifer, building a model of 0~-900 m (3D) and the aquifer is located in-750m~-800m.…
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The Example in TOUGH2's ECO2N:Radial Flow from a CO2 Injection Well
Dear all, I am using TOUGH2 ECO2N and I have confused about the example in Page 28 of the manual ECO2N: A TOUGH2 Fluid Property Module for Mixtures of Water,…
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How to import field reservoir properties data into reservoir model in TOUGH2?
Hi everyone, I have field data showing spatial temperature and salinity variation of a given reservoir. I would like to know if these data can be imported in a reservoir model in TOUGH2.…
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Residual and solubility trapping
Hello everyone. I am working on Co2 storage using both ECO2N answer ECO2M. In the result we have 1-sg which represents the saturation of CO2 in gas phase.…
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T2Well questions
Hi there, Starting to play around with T2Well and having good fun. ;) Two things (at least) that I didn't understood: 1- ROCKS data block: the domain name for wellbore cells starting with 'x'.…
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T2Well constant fluid properties and EOS1 relationship?
Hi, I am currently modelling a wellbore with constant density, thermal conductivity and specific heat capacity thermophysical properties at surface temperature 40 degrees like so: Wella 2 1665.e00 1.…
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Temperature limits of various ECO2N versions
Hi Folks, Anybody can send me a few words on this: We have a version of ECO2N (as a part of iTough2.7.0.) which doesn't perform with T>103.4, same indication seen in CO2Tab data that is limited to…
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representing an oven using extra cell
Hi everyone, I’m trying to use TOUGH2 to history match a column test where some soil was put inside a glass column and sealed and then put the column itself inside an oven set at some elevated…
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Questions on NAPL volatile and dissolution
Hello everyone and Stefan, I have several questions on NAPL volatile and dissolution into water. Based on the manual, volatile is controlled by temperature,…
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libgcc-s-dw2-1.dll & libgfortran-3.dll
I want to run executable file for Tough2 EOS7CA. I receive the following error messages: "The code execution cannot proceed because libgcc-s-dw2-1.dll was not found.…
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TOUGH-FLAC coupling
Hi, I am trying to use a coupled TOUGH-FLAC simulation on a reservoir model. I am just starting with a simple 'cube' model with uniform properties. I went through some of the works done by Jonny…
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How to inject CO2 using eos2
Hi. I want to inject CO2 of 1000 ton/day and H2O of 2400 ton/day into model domain (1.5* 10 km) using EOS2. Following advice in https://tough.forumbee.…
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Actually, I need a software I could model the Coupling Thermo-Hydro-Mechanical damage.
I was wondering if this software(TOUGH2) is suit for this purpose or not. please let me know if you have any more information in this area.Thanks
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How to define heterogeneity in TOUGH2-ECO2N
Hi I am a new TOUGH user. I am interested in learning about defining fluid injection models with TOUGH2. I would like to learn about building heterogeneous models - which Kx and Ky differ from one…
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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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ECO2N, Model initial temperature distribution
Dear all members, Hi, I'm working on thermal injection simulation in TOUGH2 and I want to define an initial temperature distribution for my model. After program execution (ECO2N),…
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ECO2N non-isothermal issue
I'm injecting CO2 (at enthalpy 3.09E5 J/kg, about room temperature) to a reservoir having temperature range 50C to 100C, but the temperature at injection cell drop quickly to 3C after injecting that…