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Re: Methods to Place GENER Block
Nicholas, PetraSim can help you prepare a TOUGH input file including the proper location of production/reinjection wells in the conceptual model and then in the discretization grid. Alfredo
Alfredo Battistelli
Reservoir Engineer
Alfredo_b
3 days ago
TOUGH3
Reported - view
Re: Run ends early
Nicholas, You should check why the simulation is not converging, looking at messages, at the element causing the non convergence and at its thermodynamic state,…
Alfredo Battistelli
Reservoir Engineer
Alfredo_b
8 days ago
TOUGH3
Reported - view
Re: Run ends early
Hi Nicholas. From your mesh file it seems you are using a single horizontal layer (NZ=1). The infile reports initial conditions only for the injection element: P=5.86E6 Pa, T=12°C and Xair=0.…
Alfredo Battistelli
Reservoir Engineer
Alfredo_b
9 days ago
TOUGH3
Reported - view
Re: Defining Tortuosity
You should run the first segment without diffusion. Then run a restart by assigning the desired diffusion parameters.
Alfredo Battistelli
Reservoir Engineer
Alfredo_b
2 wk ago
TOUGH2
Reported - view
Re: Defining Tortuosity
I have to correct my self. I made a wrong check in PetraSim: actually the code accepts negative diffusivities. Thus, even the third TOUGH2 option mentioned in the previous post can be chosen in…
Alfredo Battistelli
Reservoir Engineer
Alfredo_b
2 wk ago
TOUGH2
Reported - view
Re: Defining Tortuosity
Hi Abdelrazik. TOUGH2 allows 3 options for assigning the tortuosity coefficient and the the diffusivities used to compute the diffusion fluxes (see pag. 159 of the User's guide).…
Alfredo Battistelli
Reservoir Engineer
Alfredo_b
2 wk ago
TOUGH2
Reported - view
Re: Facing problem to match TOUGH output with excel and Python
I noticed the following: * the thermal diffusivity for the given parameters seems to be 3.368E-6 m2/s, not the stated 1.28E-4 m2/s. * you want to inject heat at 30 W/m2.…
Alfredo Battistelli
Reservoir Engineer
Alfredo_b
1 mth ago
TOUGH2
Reported - view
Re: ECO2N / ECO2M: handling of wettability in a dry zone
Hi Godarzi. When dry CO2, or any other dry gas, is injected in a medium containing water, water is evaporated according to local thermodynamic equilibrium eventually promoting the complete…
Alfredo Battistelli
Reservoir Engineer
Alfredo_b
2 mths ago
1
TOUGH2
Reported - view
Re: How to set a production well with constant pressure
@selin dai what I see is that you start with a tiny time step and convergence is achieved at the first iteration. Thus, with no changes of primary variables.…
Alfredo Battistelli
Reservoir Engineer
Alfredo_b
4 mths ago
TOUGH+
Reported - view
Re: How to set a production well with constant pressure
Brad, I think a rigorous approach would require the use of a coupled wellbore-reservoir flow solution, like that avaialable in T2Well. I'm not aware if something similar is available in TOUGH+.…
Alfredo Battistelli
Reservoir Engineer
Alfredo_b
4 mths ago
1
TOUGH+
Reported - view
Re: How to set a production well with constant pressure
Actually, TOUGH2/3 and I think TOUGH+ too, could use virtual elements (like those with infinite volume) connected to any element of the discretization grid.…
Alfredo Battistelli
Reservoir Engineer
Alfredo_b
4 mths ago
TOUGH+
Reported - view
Re: Blank MESH
@Huanwei Shi Have a look to the user guide, such as Pruess et al. (1999). TOUGH2 USER’S GUIDE, VERSION 2, LBNL-43134. Revised September 2012 . At pag. 94 :…
Alfredo Battistelli
Reservoir Engineer
Alfredo_b
6 mths ago
1
TOUGH2
Reported - view
Re: applying heat load in BHE and varying input T?
I guess you should remove the inactive cell at DHE input and use GENER to inject your variable fluid rate history by assigning the injection enthalpy corresponding to your desired inlet T vs time.…
Alfredo Battistelli
Reservoir Engineer
Alfredo_b
7 mths ago
TOUGH2
Reported - view
Re: applying heat load in BHE and varying input T?
Dear Hanna, I understood you want to apply a heat load to your entire BHE. But you applied the heat load by just injecting heat into the BHE inlet (eleme A1000).…
Alfredo Battistelli
Reservoir Engineer
Alfredo_b
7 mths ago
TOUGH2
Reported - view
Re: CHEMP block for diesel and gasoline?
Mikey, as diesel fuel and gasoline are complex HC mixtures, if you want to simulate approximately their thermodynamic behaviour you might use a pseudo-component approach as customary made in the O&G…
Alfredo Battistelli
Reservoir Engineer
Alfredo_b
8 mths ago
1
TMVOC
Reported - view
Re: Pressure vs CO2 DG
Jose, if you are using T2Well, it would probably mean that domain belongs to a wellbore section for which you want the calculation of wellbore heat exchange using the analytical formulation by Ramey.…
Alfredo Battistelli
Reservoir Engineer
Alfredo_b
8 mths ago
TOUGH2
Reported - view
Re: Pressure reporting: Tgh2-ECO2M
Apologize for the typo: I used T2Well-ECO2M (not ECOM). A.
Alfredo Battistelli
Reservoir Engineer
Alfredo_b
8 mths ago
TOUGH2
Reported - view
Re: Efficient time stepping with great variability in pumping/shutin period durations
Yannick, I would try using the actual pumping history with MOP(12) =2. In this way you should at least replicate the cumulative production during each time step.…
Alfredo Battistelli
Reservoir Engineer
Alfredo_b
8 mths ago
TOUGH3
Reported - view
Re: Pressure reporting: Tgh2-ECO2M
Godarzi, I need to clarify my previous post. The ECOM version I used is V.2 by Lehua Pan which can simulate H2O-CO2-NaCl mixtures up to 300°C. It seems it is not able to accept the ECO2N style INCON…
Alfredo Battistelli
Reservoir Engineer
Alfredo_b
8 mths ago
TOUGH2
Reported - view
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…
Alfredo Battistelli
Reservoir Engineer
Alfredo_b
8 mths 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.…
Alfredo Battistelli
Reservoir Engineer
Alfredo_b
8 mths 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
Alfredo Battistelli
Reservoir Engineer
Alfredo_b
9 mths 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…
Alfredo Battistelli
Reservoir Engineer
Alfredo_b
9 mths 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.…
Alfredo Battistelli
Reservoir Engineer
Alfredo_b
11 mths 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…
Alfredo Battistelli
Reservoir Engineer
Alfredo_b
1 yr ago
TOUGH3
Reported - view
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Alfredo_b
Reservoir Engineer
Italy
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