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Everything posted by Alison

  1. EOS7C initial conditions

    I wanted to post a PDF discussion of this topic on the forum for others to look at. The initial mass fraction of NCG is in the aqueous phase. The equation of state will calculate the equilibrium value in the gas phase. The remaining gas will be methane. Because a very small mass fraction of aqueous N2 leads to a much larger equilibrium mass fraction of gas, you have to use very low initial NCG values during initialization. Thanks to Dan Swenson at Thunderhead for putting this together. If anyone would like to see the spreasheet or SIM files used here, please contact me at alison @ rockware.com. Thanks, Alison
  2. Exporting Water Types from AqQA

    Unfortunately, AqQA does not include any tools for a mass export of the data analysis information. We will put this on the wishlist for a future version of the program. Best Regards, Alison
  3. EOS7C initial conditions

    Amy, I have also had a hard time initializing a model with very little methane and mostly NCG using EOS7C. If you would like to send me your SIM file, I can experiment a bit with that, but think that this might be a better question for the LBNL TOUGH2 forum. It is my understanding that you would want to make the NCG mass fraction very large. Whatever part of the gas phase that is not make up of water vapor or NCG will be methane. Best Regards, Alison
  4. flow mass fraction

    Could you tell me where the PetraSim program is producing a flow mass fraction? Are you referring to output in the well plot, or in sink/source plots? Best Regards, Alison
  5. I-data contouring based on depth?

    It is hard to know what the problem is without looking at your actual data. It sounds like you are doing everything correctly, although you should not have to "Create a New Model" each time you create a surface map. Instead, I would recommend that you use the same RWMOD file each, time and simply vary the RWGRD file you use. You might try viewing your RWMOD in 3D along with your surface to see what kind of concentrations intersect the surface. If you continue to have problems, feel free to send a backup of your database, along with your RWMOD and RWGRD files to tech @ rockware.com, and we would be happy to take a look. The create a backup of your database, go to File / Backup Database, and send use the zip file created during the backup process. Best Regards, Alison
  6. I-data contouring based on depth?

    If you have a ground surface grid, you should be able to use the Grid / Math / Grid and Constant Math tool to create grids at certain depths below ground surface. You can then use the I-Data / Surface Map option to create contours of chloride at specific depths below ground surface. If you take this approach, you wouldn't have to modify your existing project. Regards, Alison
  7. entalphy

    Question 1: TOUGH2 EOS1 uses two variables (X1, X2) to define the state. If it is single phase conditions, the two parameters are P and T. If it is two phase, then the parameters are Pg and Sg. If the X2 is >1.5, then it assumes it is a pressure. So the variables are handled as a pair and there is not a question of which is first or second. Question 2: Basically, during injection you are adding mass and energy to a cell. The cell will then determine its new state by mixing the existing fluid in the cell with the new fluid flowing into the cell. The user will have to estimate the pressure (or saturation) of injection and use that in calculating enthalpy. My guess is that usually injected fluid is single phase and then enthalpy is not a strong function of pressure. Best Regards, Alison
  8. I-data display issue in 2d Striplog (RW 16)

    The background grid lines are plotted based on the Total Depth value stored in the Location table in the database. Please check to see if the Total Depth field is incorrect (and too shallow) for this borehole. If you continue to have problems, feel free to send an example image to tech @ rockware.com Best Regards, Alison
  9. How to read the output file

    Assuming that you are using version 5.4 of PetraSim, the program uses an alphanumeric system for naming the elements in a model. The first 999 cells have values between 001 and 999, and then the program moves on the A00 and so on. When looking at an output file, you'll see that the simulator will often list the cell with the highest residual along with any errors. If you want to identify that cell in the model, you can type the cell name into the Find window in the upper right hand corner of the program and then click on the enter button. That cell will be graphically highlighted in the display. I hope this helps. Please let us know if you have any additional questions. Best Regards, Alison (Alison @ rockware.com)
  10. Model drawdown surface

    1. You could certainly give it a try. Just keep in mind that the interpolation algorithms in RockWorks may not create a really pretty cone around the extraction well, unless you have a good distribution of observation points around the well. This could be done by creating a list of xyz elevations in the Utilities Datasheet, and create a contour map through the Map /Grid-Based map menu. 2. I would suggest that you take a look at the Drawdown_Simplified_01.rwdat file to see how you should arrange the data. You can find menu settings specific to this data file in the Drawdown_Simplified_01.rcl file. To load these menu settings, go to Drawdown Surface/Simplified and then click on the hammer button in the upper left hand corner to load the RCL file.
  11. Model drawdown surface

    Anna, Unfortunately, RockWorks really isn't designed to work with this type of data. The drawdown tools in the Utilities calculate drawdown based on pumping rate, well radius and other parameters using the Theis equation. What exactly are you hoping to do with this data? Would you like to approximate aquifer properties based on the results of the step tests? If you could provide additional details, I can let you know if we carry other programs that would meet your needs (Aqtesolv, AquiferWin32, etc.). Best Regards, Alison
  12. Using EQuIS data in Rockworks 16?

    Unless you are using an older version of EQUIS, you should have an option to create a RockWorks15 database. I believe that you have to have RockWorks15 installed to do this. If you would like to install a temporary version of RockWorks15 so that you can use this export option, feel free to contact us at tech @ rockware.com. A RockWorks15 database can be easily imported in RockWorks16, so this might be the most efficient way of data transfer until RockWorks16 is supported by EarthSoft.
  13. Jaeshik, Its hard to envision what you are seeing here or what might be the problem. Please send me your SIM file, and I will take a look to determine if this is a problem with PetraSim. Thanks, Alison alison @ rockware.com
  14. It turns out that recalculating the XYZ values through the Edit menu solved this problem for Andy. We're not quite sure why they were not calculated in the first place, so if anyone else runs into this problem, it would be helpful if you could let us know by sending a quick email to tech @ rockware.com. Thanks, Alison
  15. Andy, I'd be happy to look into this. Could you tell me what type of data you are exporting (I-Data, T-Data, etc.)? Also, what revision of RockWorks are you using? This should be listed in the lower right hand corner of the program. Thanks, Alison
  16. I would suggest that you export the Shapefile through the File / Export menu, rather than through RockPlot3D. This will create a shapefile that contains actual contamination values. You can find a case study on the RockWorks support page that covers the shapefile export options in RockWorks. If you need a direct link to this (unfortunately, I can't post it on the forum), please contact me at Alison @ rockware.com.
  17. Display elevation in striplog?

    There is an option to display elevations along with depths in a 2D striplog. This “Include Elevations” option is enabled through the Depth Bar Options in the 2D Striplog Designer. You could also add a second scalebar to a 2D striplog through the Draw / Insert menu in RockPlot2D, but this would have to be added individually for each striplog. Please let us know if you have additional questions. Thanks, Alison
  18. Import a Rw3D file into datasheet Utilities

    Loann, You will need to list the names of the RW3D file in column 1 of an RWDAT file (so if you have three RW3D files, you should have three files listed in rows 1 through 3 of Column 1). You'll also need to be sure that the RW3D files are located in your current project folder. If you would like to manually select the files by double clicking on the cells in the RWDAT file, you should change the column type to a File Name. To do this, go to Column / Column Properties, and select "File Name" under Linked Data. If you continue to have problems, please send your RWDAT file and RW3D files to tech @ Rockware.com. Thanks, Alison
  19. I would recommend that you first check to confirm that the Pressure in the model is not exceeding 600 bars. You would normally get a "cannot find parameter" error in the output file for this type of problem.
  20. It is hard to know what the problem is without reviewing the model, but my guess is that the simulation is halting and outputting an incomplete time step, rather than all of the gas phase in the model disappearing. Depending on the model, it's possible that the SS value in the injection cell is actually going to 1, causing a premature halt to the model. The best way to confirm what is happening is probably to rerun the model with the print options turned on for the injection cell. This will allow you to view a detailed Cell History Plot and will hopefully reveal the problem. If you continue to have problems, feel free to send me your SIM file and I will take a look. Best Regards, Alison Alison @ rockware.com
  21. Surface geologic map

    Loann, If you want to create a stratigraphy model using the Borehole Manager, then yes, you are correct that the only way to force the model to honor geologic map contacts would be to add some additional "virtual" boreholes to the database. Depending on the complexity of the geology in the area and the number of units, you may want to consider building the surfaces that make up the stratigraphy modeling outside of the Borehole Manager (through the Utilities) using lists of xyz points. If this seems like it might be a good option, then I would suggest that you take a look at the Advanced Stratigraphy Modeling webinar posted on our YouTube channel. There are also some case studies on this topic posted on the RockWorks support page under Case Studies / Stratigraphy. If you would like to contact me via email, I would be happy to send you direct links to all of these. Best Regards, Alison Alison @ rockware.com
  22. Mineral data in TOUGHREACT

    The following publication has been recommended by one of my colleagues: Palandri, J.L. and Kharaka, Y.K. (2004) A compilation of rate parameters of water-mineral interaction kinetics for application to geochemical modeling, USGS Open File Report 2004-1068, 64 p. I don’t know how to answer your question about oxidation/reduction conditions. This might be a better question for the LBNL TOUGH2 forum, which you can find with the following Google search: LBNL TOUGH2 forum Best Regards, Alison
  23. There may be times when you want to run a TOUGH2 model from a command line. I've tried to describe the steps you would take to do this below. Single PetraSim Licenses If you are working with a single license of PetraSim you’ll need to place the PetraSim .lic file and the rlm922.dll in the same directory at the simulation executable that you need to run. We recommend that you put the input file in that directory as well. Network PetraSim Licenses You’ll need to use the floating license server to authorize the simulator use before running the model. After opening the command prompt, you can set an environment variable similar to this: c:\>set [email protected] You should substitute the correct servername and port number. After setting the environment variable, you can run the executables from the command line (below), and it will pick up and use the floating license. TOUGH2, T2VOC, TMVOC For TOUGH2, T2VOC and TMVOC, the command would look like this: Executable name <input file> output file For example, to run a model called heat_pipe.dat using EOS3, the command would look like this: eos3.exe <heat_pipe.dat> heat_pipe.out TOUGHREACT To manually run a TOUGHREACT model, you should place the following files in the directory with the executable: 1. Flow.inp 2. Chemical.inp 3. Solute.inp 4. thermodb.txt (this is a copy of the thermXu4.dat file stored under C:\Program Files (x86)\PetraSim 5) The command to run the simulation is the simply the name of the executable, for example, to run the EOS3 TOUGHREACT executable, the command would be: treact_eos3.exe TOUGH2-MP If you need to run TOUGH2-MP outside of the PetraSim software, then you should contact tech @ rockware.com for a batch file. TOUGH2-MP cannot be run from a single command.
  24. Chemical data in TOUGHREACT

    Without looking at your SIM file, it's hard to know exactly what the problem is. You should look at the bottom of the runlog and flow.out files to see if there are specific error messages. If you are getting the Singular Matrix in Chemical Solver error message, then you probably have as you suggested, an in-defined chemical system. I would recommend that you run your initial water chemistry through a modeling program such as PHREEQC or GWB before inputting it into PetraSim/TOUGHREACT, so that you are sure that you've defined an initial water chemistry in equilibrium with the minerals in the model. You are welcome to send your SIM file to Alison @ rockware.com if these suggestions do not help you resolve the problem. Best Regards, Alison
  25. Rockworks14 I-Data Profile default font

    Stuart, Unfortunately, there is no way to change the font in RockWorks14. We would expect the program to revert to a backup font, but we're not sure which one the program would use (and it may not be very pretty). You might want to consider an upgrade to RockWorks16, which allows the user to specify a different font for RockPlot2D diagrams. Also, if you do a Google search for "missing arial font on computer", you'll find some suggestions on a Microsoft forum for how to resolve the problem. Best Regards, Alison