Sam OR

Hi there, Thanks for getting back to me and helping with this. I attempted to rectify the errors here and posted about myself simplifying the model in this post: I was wondering if you would be able to take a look and help with the issues I have encountered. Thanks again. Sam.

Hi there, not too long ago I posted a comment onto the forum requesting help regarding using the 'React' program to model the stability of various electrolytes when injected into certain formation waters over a range of pHs and Ehs. I was told that the program I was running would exceed the water-stability limits due to the wide range of pH and Eh values being utilised. As such, I decided to simplify the program by keeping a constant pH (representative of the formation water sample), and simply operating a scaling Eh value from -0.8 to 1 V to represent a change from reducing conditions to oxic. The script works for some formation water samples but not others, I've attached two, one where it works and one where it does not which are labelled with the save files. Most of the issues are regarding the solution being too supersaturated, which is an issue considering these are the formation water samples I have so the program providing no answers limits my investigation. The context is storage for usage in a redox flow battery so I am to test to stability of the reduced and oxidised form of the electrolyte (in this case iron chloride) across the range of Eh values if this helps. Any changes you could recommend I put in place would to allow the script to run would be greatly appreciated, as i simplified the program assuming that would have resolved the errors which unfortunately hasn't been the case. Thanks for the help! Sam.FeCl3 simulated injection working example.reaFeCl3 simulated injection working example.rea FeCl3 simulated injection not working example.rea

Hi there, I am currently part of a project to determine the stability of various electrolytes whenever injected into different formation waters. I would like to identify how the stability of FeCl3 varies across a range of pHs (2-9) at a set Eh values. This has worked for the model I've posted below for Eh values exceeding 0.3V but anything more reduced than that and the program doesn't run with the error: Newton-Raphson didn't converge after 999 iterations, max residual = 0, Xi = 0.0000 Largest residual(s): Resid Resid/Totmol Cbasis --------------------------------------------------------- --------------------------------------------------------- I'd like to be able to set the Eh value at more reducing conditions if possible and would appreciate any help regarding this. Also, since I'm new to using GWB, if there are any errors I've made or improvements that you could suggest to more accurate represent the system I would greatly appreciate this also. Thanks for the help! Sam. FeCl3 simulated injection.rea