TOUGH2 Category

Increasing the number of rock materials

Hi everyone, I am working with TOUGH2/EOS7C. I need to use 44 different rock materials in the ROCKS. I am wondering if there is any way that I can increase the number of rock materials from 27 to 44…

How to simulate a tide boundary?

Hello, everyone, I am a new TOUGH2 user. I want to creat a model using EOS3 module. The left boundary of the model is a water-land interface. The mean sea level is assumed to be 6m below the ground…

System of equations for EOS4

Hello, I am trying to write the system of equations for EOS4. But one equation is missing. I think it is the relation between mass fraction of water in gas phase (or mass fraction of air in gas…

Mesh Maker 1.5 3d/2d MESH VISULAIZATION

Can any body cooment on whether, its possible to visualize the mesh you have created using Mesh Maker 1.5 can be visualized using any software? plz tell guys,…

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).…

modelling a river

Hi, What is the best way to define a b.c. for a river (standing water body)? I have leak point at some depth below the bottom of a river within a groundwater.…

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),…

Effective or Total Porosity in TOUGH2 EOS1

Migrated from Rockware Support Forum: Does TOUGH2 EOS1 assume total porosity or effective porosity for water? Is there a built-in conversion from one to the other?

Big alternating in/out fluxes along sloped water table boundary

Hello, I am using iTOUGH2-ECO2N to investigate upwelling of CO2-laden brine into a shallow aquifer system, but I am having a problem with the initialization of the flow model and would appreciate…

Error in defining Heterogeneous Regions with Meshmaker 1.5

Hi everybody, I have a question about geometry definition in meshmaker. I tried to define a very simple layered material by using meshmaker 1.5, and I tried to define the layers by heterogeneous…

ECO2N permeability modification

Hi all, I have a question about random permeability modification using ECO2N. When I include a SEED dummy domain in ROCKS and use input parameters for logarithmic permeability modification,…

TOUGH2 code compiled with IVF（based on VS circumstance）

Hello，everyone！ I have some question about compile TOUGH2 code. I have two fortran compiler,but I can only compile TOUGH2 code follow the suggest giving in https://tough.forumbee.…

The relationship between S_l and P_cap is not consistent with the van Genuchten function

Hi, I am using ECO2N for simulating CO2 storage. I wanted to verify that the relationship between the liquid saturation, S_l, and the capillary pressure, P_cap,…

Maximum MCYC

Hi. Although I set MCYC (maximum number of time steps) to more than 1000, TOUGH2 calculation stops at KCYC=1000. Is maximum value of MCYC 1000 ? (This is not described in TOUGH2 manual...…

Is there a limit of injection rate that an element can accept?

Hi, I am running a 2-D planar, unidirectional flow with injection and production at both ends (actually, simulating an aquifer). But I found if I increase the injection rate more than a certain…

water, vapor and heat coupled modeling in 2D/3D

Hello all, Is TOUGH3 able to couple water, vapor and heat transfer in a 2 or 3 dimensional unsaturated zone model? I mean to do 2D/3D vapor transport modeling in semi-arid region with a atmosphere…

For a same drainage process, why ECO2N with hysteresis modeling and ECO2N without hysteresis modeling have very different results?

I studied the reservoir response to different injection processes. To just test the simulators' capability, I used TOUGH2-ECO2N with the hysteretic capillary pressure and relative permeability…

Any idea for constant thermophysical properties for fluid (water) and P/T decoupling in governing level?

Hello. I'm trying to modify TOUGH2 codes for constant thermophysical properties for fluid (eos1) and P/T decoupling in governing equation level. In order to do this, I've fixed density, viscosity,…

EOS1 with 2nd water. Some issues ...

Hello everybody, I'm quite new to Tough2, and trying to build my 1st case. So far I managed to run a very simple case with 2 wells (1 producer / 1 injector) in a water filled reservoir.…

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.…

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…

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.…

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…

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…

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…