Alfredo Battistelli's Profile - TOUGH User Community

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Re: TMVOC-Temperature is out of range
@高大个 A possible explanation is that when production and injection wells are in operation, reservoir conditions locally changes much more than during previous simulation with rainfall recharge only.…
- Reservoir Engineer
- Alfredo_b
- 1 mth ago
- TOUGH3
- Reported - view
Re: TMVOC-Temperature is out of range
@高大个 As Kenny already wrote, during the NR iteration process the primary variables may go outside the working range for the EOS. Then a diagnostic message is printed and the time step is reduced.…
- Reservoir Engineer
- Alfredo_b
- 1 mth ago
- TOUGH3
- Reported - view
Re: TMVOC-Temperature is out of range
@高大个 Are you injecting with the correct fluid enthalpy? Do T lower than O°C occur in injection elements?
- Reservoir Engineer
- Alfredo_b
- 1 mth ago
- TOUGH3
- Reported - view
Re: TOUGH3-EOS7C failed to converge after 10 years
@Haiyan Zhou - It is rather difficult to analyze issues in converging behavior without having the chance to look at the model features, being able to look at the output file,…
- Reservoir Engineer
- Alfredo_b
- 1 mth ago
- TOUGH3
- Reported - view
Re: TOUGH3-EOS7C failed to converge after 10 years
Haiyan, (1) the iterations shows that two elements (43752 and 43805) have a difficult phase transition to two-phase. The bubble P (PG) is only slightly higher than P (PX) after the 3rd iteration,…
- Reservoir Engineer
- Alfredo_b
- 2 mths ago
- TOUGH3
- Reported - view
Re: TOUGH3-EOS7C failed to converge after 10 years
From the info provided it is not possible to say why the run essentially stops by reducing the time steps until one step does not converge in 9 iterations,…
- Reservoir Engineer
- Alfredo_b
- 2 mths ago
- TOUGH3
- Reported - view
Re: EOS7Energy Efficiency Calculation
@高宏建 I'm not an expert on TOUGHREACT. So others should give you the requested answer. For flow only simulations, a single run or multiple restart should give the same results,…
- Reservoir Engineer
- Alfredo_b
- 2 mths ago
- TOUGH2
- Reported - view
Re: EOS7Energy Efficiency Calculation
Sorry, but I have no time to run your input file. I can just make some comments looking at the shared files. - you sent separate output files for the daily air injection step and the two daily…
- Reservoir Engineer
- Alfredo_b
- 3 mths ago
- 1
- TOUGH2
- Reported - view
Re: EOS7Energy Efficiency Calculation
You have to use the enthalpy printed in the output file related to the sinks and sources contributing to the cyclic injection and extraction process ypu want to monitor.…
- Reservoir Engineer
- Alfredo_b
- 3 mths ago
- 1
- TOUGH2
- Reported - view
Re: TMVOC
Dear Jie, under PetraSim you are using the original TMVOC version released in 2002. I invite you to read the user's guide (Pruess K., Battistelli A. (2002).…
- Reservoir Engineer
- Alfredo_b
- 3 mths ago
- TOUGH2
- Reported - view
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
- 5 mths 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
- 6 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
- 6 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
- 6 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
- 6 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
- 6 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
- 6 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
- 7 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
- 7 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
- 7 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
- 7 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
- 7 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
- 7 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
- 8 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
- 9 mths ago
- 1
- TOUGH2
- Reported - view

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