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Efficient time stepping with great variability in pumping/shutin period durations
Dear colleagues, I am history matching a pumping test that consists of two 3day flow periods each followed by a 10d shutin periods. The flow rates were not constant during the pumping periods and…
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Changes of hydraulic conductivity driven by effective stress
Hello, Does TOUGH have a simulator with geomechanics capabilities? I am specially interested in changes of hydraulic conductivity driven by effective stress.…
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AZ_calc_blk_diag_inv: ERROR: the factorization has produced a singular U with U[2][2] being exactly zero.
I am running a 3D TOUGH3 model with EOS7C and the AZTEC parallel iterative solver. Occasionally I receive this error that ends my model run, and the OUTPUT file gives me no clues as to what is going…
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MeshMaker: Element depth
Hi there, I am using MeshMaker to generate axis symmetric radial grid for Tough2 simulations based on the MM examples. MeshMaker is generating the 'right' MESH file unless that the depth is not…
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Access violation
Hi I encountered following error. Has anyone experienced this and if so how did it get resolved?
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COM2 injection with eco2m eos
I have not been able to find any documentation on how brine injection is handled when using eco2m. NaCl is COM2 in the GENER block. I would assume that salt mass fraction of the brine would be part…
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Trapping CO2 in ECO2N
Dear All, I am working on CO2 storage using ECO2N. In the output file, we have "P T SG SS XNACL YH2OG XCO2aq PCAP k-red" How can I calculate the residual trapping CO2 saturation and solubility…
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Compressibility On/Off in ECO2M
Hello folks, I posted a similar thread on TOUGH2, but here in TOUGH3, there seems to be an option under MOP2 where we can turn on/off the effect of compressibility on porosities.…
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immature termination
Hi all, I'm trying to model an experiment where I had a cylinder filled with sand and some headspace on the top. The sand had some solvent in it. The whole cylinder was initially at about 100 degC…
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Values <1.0E-100 included in SAVE file with improper formatting.
When running with tough3-eos3, we noticed that there were some values for air mass fraction (X2) that were below 1.0E-100, but the "E" was not included.…
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bugs or misunderstanding?
1. There is no printout of aqueous-phase density in the t2voc.exe on hand except that of DNAPL and DGAS (with “D” herein meaning density). 2. I found there are some bizzar things to me when checking…
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T2Well (modeling nozzle/Plug in wellbore)
Hi everyone, I have question about ROCKS data block in T2Well. According to the manual, the domain of grid cells that start with "x" indicates wellbore cells filled with porous medium or consisting…
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Constant gas production rate
We are using EWASG modulus to simulate a reservoir with water, salt, and NCG. For the production well, there are water and NCG production. We know that we can set total (gas + liquid) production…
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Columns Headings in COFT (T2Well)
Hi, In the manual of T2Well, five variables should be obtained in COFT file. While using T2Well, I find seven outputs per connection without titles. Can anyone help me to identify the output…
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OUTPUT File Size
Hello, Does anyone know if it's possible to reduce the size the OUTPUT file by not printing the same information printed in the CSV/PetraSim/Tecplot file? For example,…
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Simulation Stopped without Error
Hi, everyone. I am trying to make simulation model for hydrate production with depressurization method using TOUGH+HYDRATE. To do this, I made 2D radial model (150*170 grid cells) to simulate the…
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The order of ELEME and CONNE will influence computation results
I used to think that ELEME and CONNE can be arranged in arbitrary order as long as the blocks provide same information, but recently I found changing the order of ELEME and CONNE can significantly…
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Question about Run-time Error
Hi everyone, I am trying to make simulation model for hydrate production with depressurization method using TOUGH+HYDRATE. However, I got an error message as shown in the attached picture.…
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Error1:Program received signal SIGSEGV: Segmentation fault - invalid memory reference
Hello, I have been working on a model for several months, and now when I run my model, I have the following error: Program received signal SIGSEGV: Segmentation fault - invalid memory reference.…
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How does one track internal progress while the solver is iterating?
The model is taking a long time to run and there is no progress info in the Ubuntu command window. Is there a way to track internal progress? For example,…
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How to output viscosity in the output results
Hello every one, I want to know how to output water and CO2 viscosity at every grid block in the output results file. Thanks in advance
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Infiltration into dry soil
Hello every one, I am new to work with TOUGH3 software. I tried to simulate 1D infiltration into a 1m high column of sandy clay loam with an initial head pressure of -8 m.…
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Initialization (T2Well)
Hello everyone, I have the following question regarding initialization procedure for simulation using T2Well. I want to simulate the changes at wellhead of a monitoring well that extends to the…