Alfredo Battistelli's Profile - TOUGH User Community

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Re: About the design of boundary
For the no flow boundary no actions are required. For che constant P boundary you should assign as initial condition the required P and assign a numerically infinte volume to the grid element.…
- Reservoir Engineer
- Alfredo_b
- 1 mth ago
- TOUGHREACT
- Reported - view
Re: About the SEED with porosity
@Luoluo If you are using TOUGH2 only the porosity can be changed element by element through the INCON block. You have also posted a similar question under TOUGHREACT.…
- Reservoir Engineer
- Alfredo_b
- 1 mth ago
- TOUGH2
- Reported - view
Re: Integrated CO2 injection modeling for studying flow distribution aspects in well (&well formation?) in CO2 injection wells in Tough2-ECO2M
Vasilii, you can model H2O-CO2-NaCl fluid mixtures with CO2 phase changes with TOUGH3-ECO2M. For coupled modeling of wellbore and reservoir flow you need T2Well-ECO2M,…
- Reservoir Engineer
- Alfredo_b
- 3 mths ago
- TOUGH2
- Reported - view
Re: T2Well/ECO2N mesh software recommendation
My post comes a bit late, but you may consider to have a look at VORO2MESH developed at the DICAM Dept., Un. of Bologna, Italy. The code was used to build un unstructured grid for sedimentary layered…
- Reservoir Engineer
- Alfredo_b
- 3 mths ago
- TOUGH3
- Reported - view
Re: How many VOCs can be included in a TMVOC simulation?
XVOCw is the total mass fraction of VOCs in the aqueous phase (TMVOC, user's guide, pag. 57). X(aq) is the mole fraction of the VOC in the aqueous phase.…
- Reservoir Engineer
- Alfredo_b
- 5 mths ago
- TMVOC
- Reported - view
Re: Assistance Needed with Methane Volume Quantification in EOS7C Model
Jordon, I'm not a specialist in EOS7CA, but: - Sat_G should be the gas saturation of the gas phase, which includes methane, air and water vapor. - the concentration of methane in both gas and aqueous…
- Reservoir Engineer
- Alfredo_b
- 5 mths ago
- TOUGH3
- Reported - view
Re: The results of Example 2 in the ECO2M manual
Dear Kohei, a residual water saturation of 0.3 means the aqueous phase cannot be displaced by the injected CO2 below that saturation value, as AQ phase relative permeability is 0.…
- Reservoir Engineer
- Alfredo_b
- 5 mths ago
- TOUGH2
- Reported - view
Re: Commingled injection well modeling
@liu qi 1) it's not possible to say why you experience a slow convergence. It may be due to many different reasons. You have to look at the output, identify which is the element and the equation…
- Reservoir Engineer
- Alfredo_b
- 6 mths ago
- TOUGH3
- Reported - view
Re: Commingled injection well modeling
I think it is definetely possible, as it has already been done. An example is given by Giorgis et al., Energy Conversion and Management 48 (2007) 1816–1826.…
- Reservoir Engineer
- Alfredo_b
- 6 mths ago
- TOUGH3
- Reported - view
Re: Problem of wellbore coupling with reservoir in T2WELL
The wellbore node in a wellbore-reservoir connection shall be located at the wellbore - reservoir interface. Then, the flow along the connection is simply computed using Darcy's law from the wellbore…
- Reservoir Engineer
- Alfredo_b
- 7 mths ago
- TOUGH2
- Reported - view
Re: T2Well-ECO2N
@Muhammad I do not have a specific experience in modeling CO2 leakages along wellbores. There is an extensive literature on the subject that can be searched to identify the best approach to be…
- Reservoir Engineer
- Alfredo_b
- 7 mths ago
- TOUGH2
- Reported - view
Re: Flow out of the base of a hillslope
@Jordon Massey I tried to implement the main features of your conceptual model into the numerical one, but you should of course use your own model specifications (petrophysical properties,…
- Reservoir Engineer
- Alfredo_b
- 8 mths ago
- 1
- TOUGH2
- Reported - view
Re: T2Well-ECO2N
@liu qi You should use T2Well when a coupled modeling of wellbore and reservoir flow is necessary. This might be the case when you are interested in transients occurring because of changes in…
- Reservoir Engineer
- Alfredo_b
- 8 mths ago
- TOUGH2
- Reported - view
Re: Flow out of the base of a hillslope
@Jordon Massey Thanks for the clear conceptual model sketch. I have to update PetraSim from V. 2022.3.1003 to the latest 2023 version. So I rebuilt the model using EOS3.…
Attachment
- Reservoir Engineer
- Alfredo_b
- 8 mths ago
- TOUGH2
- Reported - view
Re: Flow out of the base of a hillslope
Jordon, May be I missed something about the conceptual model on which your numerical model is based. A graphical sketch of the conceptual model would likely clarify what you intend to model.…
- Reservoir Engineer
- Alfredo_b
- 8 mths ago
- TOUGH2
- Reported - view
Re: Flow out of the base of a hillslope
Increasing the volume of a boundary elements by 50 times is not enough if you want constant boundary conditions. You should use something in the order of 1.E+30 or more.…
- Reservoir Engineer
- Alfredo_b
- 8 mths ago
- TOUGH2
- Reported - view
Re: How can the relationships between permeability (k/k0) and porosity (Φ/Φ0 ) in the fault be changed?
@xusheng chen As you posted under TOUGH2 I assume you are using TOUGH2-ECO2N. k vs phi model is assigned using IE(11) and model parameters are given with FE(1) and FE(2),…
- Reservoir Engineer
- Alfredo_b
- 8 mths ago
- TOUGH2
- Reported - view
Re: How to set up semi-analytical method to calculate heat transfer in t2well?
@happy12688 Wellbore heat transfer can be computed either numerically or analytically (Ramey's equation) in T2Well. Looking at T2Well-ECO2N (2011) user's guide:…
- Reservoir Engineer
- Alfredo_b
- 8 mths ago
- TOUGH2
- Reported - view
Re: How can the relationships between permeability (k/k0) and porosity (Φ/Φ0 ) in the fault be changed?
In TOUGH2-ECO2N, as in EWASG, parameters for k/ko vs phi/phio are given under block SELEC and are used for all the rock domains specified under block ROCKS. The same seems to be done in TOUGH3.…
- Reservoir Engineer
- Alfredo_b
- 8 mths ago
- TOUGH2
- Reported - view
Re: How many VOCs can be included in a TMVOC simulation?
The number of components in TMVOC is NK=1+NHC+NCG, where NHC is the number of VOC, NCG the number of gases (inorganic or organic with low Tcrit), and 1 is for water.…
- Reservoir Engineer
- Alfredo_b
- 8 mths ago
- TMVOC
- Reported - view
Re: ECO2N / ECO2M: handling of wettability in a dry zone
@Prince Kumar Having XCO2 going to 1 it's OK, as you are injecting CO2 (with a tiny amount of water, which is a good practice to avoid just one component in any of the grid blocks).…
- Reservoir Engineer
- Alfredo_b
- 9 mths ago
- TOUGH2
- Reported - view
Re: ECO2N / ECO2M: handling of wettability in a dry zone
@Prince Kumar Not sure I have understood which is the issue you have. Having a complete dry-out of the formation around the injection well? With SW going to zero? SS goin to 1 ?…
- Reservoir Engineer
- Alfredo_b
- 9 mths ago
- TOUGH2
- Reported - view
Re: Help deciding EOS7C or EOS7CA
@Jordon Massey I think EOS7C should give rather accurate thermodynamic equilibria and thermophysical properties of gas and aqueous phases at near surface conditions too.…
- Reservoir Engineer
- Alfredo_b
- 11 mths ago
- 1
- TOUGH2
- Reported - view
Re: Help deciding EOS7C or EOS7CA
Jordon, Have you considered to use TMVOC under Petrasim? It can handle mixtures of CH4 and air with a thermodynamic description suitable for low pressure conditions. Alfredo
- Reservoir Engineer
- Alfredo_b
- 11 mths ago
- TOUGH2
- Reported - view
Re: Printout problem with TIMES
OK. This seems to be a different question, but I'm not sure to have understood what you would like to have. I think TIMES lets you specify at which simulation times the code shall make a printout.…
- Reservoir Engineer
- Alfredo_b
- 1 yr ago
- TOUGH2
- Reported - view

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