Alfredo Battistelli's Profile - TOUGH User Community

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Re: Pressure reporting: Tgh2-ECO2M
Hi Godarzi. I tried your input file with T2Well-ECO2M, of course with no wellbore flow. The P vs log(radius) at 1 year is shown below. In your input file I noticed that you have omitted the phase…
- Reservoir Engineer
- Alfredo_b
- 2 yrs ago
- TOUGH2
- Reported - view
Re: Relative permeability curves in tough2
Dear Emad, I would try with the VG model for the water phase and the Corey model for the gas phase using the set of parameters listed below. The two figures show a reasonable match of your data.…
- Reservoir Engineer
- Alfredo_b
- 2 yrs ago
- 1
- TOUGH2
- Reported - view
Re: How to create meshes with local grid refinements
Dear Alejandro, As suggested by Stefano, VORO2MESH can build full 3D unstructured grids conforming to the IFDM used by TOUGH2/3. The possible refinement of 2D cartesian grids for TOUGH2 was…
Attachment
- Reservoir Engineer
- Alfredo_b
- 2 yrs ago
- Pre & Post Processors
- Reported - view
Re: Radioactive chain decay
Hi Kaveh, I would remind that if one is interested to an isotope decay chain only, but not to model water-rock equilibria with TOUGHREACT, a generic isotope decay chain or even multiple chains could…
- Reservoir Engineer
- Alfredo_b
- 2 yrs ago
- TOUGHREACT
- Reported - view
Re: JT Heat exchange in the cell containing well (using ECO2N)
Dear Godarzi, if I properly understood your question, in T2Well-ECO2N (as in all TOUGH2/3 simulators) there are no specific options to model JT effects.…
- Reservoir Engineer
- Alfredo_b
- 2 yrs ago
- TOUGH2
- Reported - view
Re: Can TOUGH3 model temperature below zero degree?
As reminded by Christine, TOUGH2/3 cannot handle T below the triple point of water, as 0.01°C is the lower limit for the old IFC67 and the new IAPWS-IF97 correlations for the properties of water and…
- Reservoir Engineer
- Alfredo_b
- 3 yrs ago
- TOUGH3
- Reported - view
Re: TMVOC initial conditions Convergence Failure
Dear Mostafa, you have specified 3-phase conditions for the CLAY zone with SO=0.1, which is a bit strange if you want to simulate first a steady-state before the NAPL spill.…
Attachment
- Reservoir Engineer
- Alfredo_b
- 3 yrs ago
- TMVOC
- Reported - view
Re: TMVOC initial conditions Convergence Failure
Dear Mostafa, It is a bit hard to comment about the convergence problem you mention without running the model. Could you share the Petrasim file? If you can, my email is alf_batt@yahoo.com.…
- Reservoir Engineer
- Alfredo_b
- 3 yrs ago
- 1
- TMVOC
- Reported - view
Re: how to cancel or minimize VOC volatilization
Dear Ziming, if you want to reduce the evaporation of VOCs from the NAPL phase, you may consider to reduce their vapor pressure which is computed either by the Wagner or Antoine eqs (eqs. 4.3.…
- Reservoir Engineer
- Alfredo_b
- 3 yrs ago
- TMVOC
- Reported - view
Re: Pore Compressibility in ECO2M
For 'initial pressure' I do mean the P of each element at the beginning of a simulation run. If you need a steady state run and you activate the pore compressibility (>0.…
- Reservoir Engineer
- Alfredo_b
- 3 yrs ago
- 1
- TOUGH2
- Reported - view
Re: Pore Compressibility in ECO2M
Dear Nur, pore compressibility changes the rock porosity as function of pressure change occurring in time since the start of simulation with respect to the initial pressure.…
- Reservoir Engineer
- Alfredo_b
- 3 yrs ago
- TOUGH2
- Reported - view
Re: T2Well constant fluid properties and EOS1 relationship?
Dear Hannah, if I understood properly your question, you would like to have a variable P boundary, with P varying in time according to some constraint specific of your simulated problem.…
- Reservoir Engineer
- Alfredo_b
- 3 yrs ago
- TOUGH2
- Reported - view
Re: T2Well constant fluid properties and EOS1 relationship?
Dear Hanna, fluid properties will be computed according to local conditions by the EOS (EOS1 in your case) in all grid elements, either belonging to reservoir or wellbore.…
- Reservoir Engineer
- Alfredo_b
- 3 yrs ago
- 1
- TOUGH2
- Reported - view
Re: T2Well constant fluid properties and EOS1 relationship?
Dear Hanna, the parameters listed under ROCKS block are related to wellbore discretization elements, not to the fluid flowing within the wellbore. Fluid properties are computed according to the…
- Reservoir Engineer
- Alfredo_b
- 3 yrs ago
- 2
- TOUGH2
- Reported - view
Re: Code: modify the Biodegradation module in TMVOC
Dear Guiyao, biodegradation capabilities were added to TMVOC V.1.0 (Pruess and Battistelli, 2002) in a version called TMVOCBio, which was not distributed at the time.…
- Reservoir Engineer
- Alfredo_b
- 3 yrs ago
- TMVOC
- Reported - view
Re: bugs or misunderstanding?
Dear Jian, about your comments related to T2VOC: 1) simply at the time the density of aqueous phase was not added to the printout. Of course it is not a bug: adding Daq printout would be very easy.…
- Reservoir Engineer
- Alfredo_b
- 3 yrs ago
- T2VOC
- Reported - view
Re: Constant gas production rate
Dear Ozawa, requiring a constant NCG production rate when a multicomponent mixture is present might not be physical. But going to your question from a purely modeling point of view: 1.…
- Reservoir Engineer
- Alfredo_b
- 3 yrs ago
- TOUGH2
- Reported - view
Re: EOS7 - Brine Definition & Tracing flow of brines
I think you have to consider the intrinsic limitations of EOS7 approach to model a brine of variable salinity. Strong evaporation processes may increase the brine fraction Xb over 1,…
- Reservoir Engineer
- Alfredo_b
- 3 yrs ago
- TOUGH2
- Reported - view
Re: EOS7 - Brine Definition & Tracing flow of brines
As stated by the TOUGH2 user's guide "EOS7 represents the aqueous phase as a mixture of (pure) water and brine". In practice the aqueous phase is a mixture of a reference brine (with mass fraction…
- Reservoir Engineer
- Alfredo_b
- 3 yrs ago
- TOUGH2
- Reported - view
Re: T2Well-ECO2N
@Godarzi K Dear Godarzi, T2Well-ECO2M has been coded by Lehua Pan at LBNL, but it is still at a research code level. I think it is for this reason the code is not yet available for commercial…
- Reservoir Engineer
- Alfredo_b
- 3 yrs ago
- TOUGH2
- Reported - view
Re: T2Well-ECO2N
1) JT effects: they are implicitely modeled by ECO2M and ECO2N thanks to the dependency of enthalpy on P&T. So, a depressurization of CO2-rich phase will involve a cooling,…
- Reservoir Engineer
- Alfredo_b
- 4 yrs ago
- TOUGH2
- Reported - view
Re: injecting VOC mass through virtual cells
Dear Alireza, one way to inject the desired amount of VOCs is, as suggested by Christine, to inject in each element using constant rate sources in GENER.…
- Reservoir Engineer
- Alfredo_b
- 4 yrs ago
- TMVOC
- Reported - view
Re: T2Well-ECO2N
Dear Godarzi, if you are interested primarily to simulate fast transients at well start-up or shut-in, then you definetely have to use T2Well. For pure CO2 injection in saline aquifers with T<100°C…
- Reservoir Engineer
- Alfredo_b
- 4 yrs ago
- TOUGH2
- Reported - view
Re: T2Well-ECO2N
By the way, I do not think TOUGH+RGB can handle 3-phase flow.
- Reservoir Engineer
- Alfredo_b
- 4 yrs ago
- TOUGH2
- Reported - view
Re: T2Well-ECO2N
ECO2M has been already coupled to a new, 3-phase flow version of T2well coded by Lehua Pan. It can handle all the phase combinations of H2O-NaCl-CO2 mixtures, including halite precipitation.…
- Reservoir Engineer
- Alfredo_b
- 4 yrs ago
- TOUGH2
- Reported - view

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