Alfredo Battistelli's Profile - TOUGH User Community

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Re: EWASG
Dear Gao, I'm not in the conditions to look at your files or run EOS7. - I do not know why the enthalpy is zero in the OUTPUT file. May be the printout of enthalpy is not implemented in EOS7.…
- Reservoir Engineer
- Alfredo_b
- 1 mth ago
- TOUGH2
- Reported - view
Re: TMVOC
It seems to me you have to assign NKIN=2, while you have not assigned a value to NKIN and then by default NKIN=NK=3. from your output file: OPTIONS SELECTED ARE: (NK,NEQ,NPH,NB) = ( 3, 3, 3,…
- Reservoir Engineer
- Alfredo_b
- 2 mths ago
- TOUGH2
- Reported - view
Re: TMVOC
In TMVOC T is always the last primary variable (see table 3 of the user's guide), but in your INCON the last primary variable is 0., which cannot be handled as T shall be higher than the triple point…
- Reservoir Engineer
- Alfredo_b
- 2 mths ago
- TOUGH2
- Reported - view
Re: EWASG
@高宏建 Dear Gao, the format of your GENER block is correct. Assigning the enthalpy of injected components (or mixture) is the standard TOUGH2 input option.…
- Reservoir Engineer
- Alfredo_b
- 2 mths ago
- 1
- TOUGH2
- Reported - view
Re: ECO2N/T2WELL to initialize a depleted reservoir (low pore pressure)
I mentioned 3 figures that were not uploaded.
- Reservoir Engineer
- Alfredo_b
- 2 mths ago
- TOUGH2
- Reported - view
Re: ECO2N/T2WELL to initialize a depleted reservoir (low pore pressure)
Dear Facheng, I had a look to Pan et al paper you mention, and specifically to Case 3. In Case 3 they simulate the injection of CO2 in a gas field pool at 3000 m depth.…
- Reservoir Engineer
- Alfredo_b
- 2 mths ago
- TOUGH2
- Reported - view
Re: EWASG
Dear Gao, I'm sorry but I have no time to go deep into your problem. I can just make some comments, hoping they can help you. - better not to start with a 60,000+ element problem.…
- Reservoir Engineer
- Alfredo_b
- 2 mths ago
- 1
- TOUGH2
- Reported - view
Re: EWASG
Dear Gao, it seems you have assigned a max time of 1.5552E7 s under GENER GENER----1----*----2----*----3----*----4----*----5----*----6----*----7----*----8 P1717A0001 0 0 0 3 COM3 0.000E+00 0.…
- Reservoir Engineer
- Alfredo_b
- 2 mths ago
- TOUGH2
- Reported - view
Re: EWASG
The T is changing at the injection element T1717: T1715 34118 0.10028E+08 0.29773E+02 0.49812E+00 0.50188E+00 0.00000E+00 0.19998E-01 0.99632E+00 0.15183E-03 -.10815E+04 0.10000E+01 0.…
- Reservoir Engineer
- Alfredo_b
- 3 mths ago
- TOUGH2
- Reported - view
Re: EWASG
Dear Gao, H2 was included as an optional NCG inside EWASG with a treatment of water-H2 mixture very similar to what is done in EOS5. The density of gaseous H2 is evaluated with the ideal gas law in…
- Reservoir Engineer
- Alfredo_b
- 3 mths ago
- 1
- TOUGH2
- Reported - view
Re: EWASG
The message tells you there is a phase transition from L to L+G at the very first iteration, which is not allowed. The appearance of gas phase occurs because of a wrong initialization of the third…
- Reservoir Engineer
- Alfredo_b
- 3 mths ago
- 1
- TOUGH2
- Reported - view
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
- 3 mths 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
- 3 mths 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 mths 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
- 4 mths 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
- 9 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
- 10 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
- 11 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
- 11 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
- 1 yr 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
- 1 yr 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
- 1 yr 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
- 1 yr 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
- 1 yr 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

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