Alfredo Battistelli's Profile - TOUGH User Community

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Re: Questions Regarding Local Refinement and Mesh Size Limitations (number of elements)
Dear Javad, The mesh refinement you would like to use seems not to follow the requirements of IFDM implemented by TOUGH2/3. The code should be modified as described by Garcia and Pruess (2000,…
- Reservoir Engineer
- Alfredo_b
- 23 hrs ago
- TOUGH3
- Reported - view
Re: What is the temperature and pressure range of TMVOC？
TMVOC was developed for the modeling of VOCs migration in the unsaturated zone and in shallow aquifers. For this reason the EOS was not designed for high P and T conditions.…
- Reservoir Engineer
- Alfredo_b
- 23 hrs ago
- 1
- TMVOC
- Reported - view
Re: Help Needed: EOS3 Non-convergence in Compressed Air Injection into Aquifer
@高宏建 About printing of phase transition messages, you may use MOP(5)=3. I suggest to try the effect of different choices by just running short simulations when you have doubts on some input option.…
- Reservoir Engineer
- Alfredo_b
- 4 wk ago
- TOUGH2
- Reported - view
Re: Help Needed: EOS3 Non-convergence in Compressed Air Injection into Aquifer
Looking at the output, the run stops because the P exceeds the allowable limit of 1000 bar in eleme 41717. This means that probably the assigned injection rate of 20 kg/s is too high for the rock…
- Reservoir Engineer
- Alfredo_b
- 1 mth ago
- 1
- TOUGH2
- Reported - view
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
- 6 mths 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
- 6 mths 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
- 8 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
- 8 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
- 10 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
- 10 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
- 11 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
- 11 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
- 11 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
- 1 yr 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
- 1 yr 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
- 1 yr 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
- 1 yr 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
- 1 yr 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
- 1 yr 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
- 1 yr 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
- 1 yr 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
- 1 yr 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
- 1 yr 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
- 1 yr 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
- 1 yr ago
- TOUGH2
- Reported - view

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