TOUGH2 Category

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…

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.…

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).…

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?…

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…

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,…

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…

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,…

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…

"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…

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,…

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.…

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…

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).…

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.…

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…

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.…

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.…

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:…

Pytough: Grid type TOUGH not supported.

Hi all, This is the first i am using pytough script. I am trying to see the summary of model geometry by using mulgrid in pytough. The Tough2 input file (as you can see in attachment) was generated…

Instant release EOS7R

Hello everybody, To simulate an instant release of a radionuclide in eos7r, we have to insert a no-zero value of the component in the INCON block. This value should be the mass fraction of the…

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.…

Theis solution

Dear All, Does anyone have a test file of the Theis problem (such as the one presented in Moridis and Pruess 1995)? Thank you in advance! Virginie

MINC for general dual porosity modeling

Hello, is it possible/advisable to use MINC for more general analysis of multiple interacting continua, i.e., without fractures? I'd like to model flow through two porous media with different…

Run a diffusion problem to equilibrium

Hi, I am working on a diffusion problem with a small gradient. The anticipated equilibrium time is ~30000 years. The best simulation time I can get for now is ~1000 years.…