rawls423

Thanks very much for your response. I really appreciate the help.

Also, what exactly am I picking up when I pickup (Run-Pickup-System-Fluid) the results of a mix? Can I indicate that I'd like to pick up the results of a 1:1 (or any ratio) mixture? What I'm trying to do is heat up a sample (fluid#1) to reservoir temperature, mix it with the brine (fluid #2) at reservoir temperature and then cool down the water to simulate movement to the surface. Because I only know the brine composition at the surface, in another React window I've heated the brine to reservoir conditions and then manually entered the results as fluid #2 for the mixing. I hope that's understandable. Thanks

Hi, I've been able to mix the fluids now. Another question just to make sure I understand what I'm seeing. When I plot pH v Rxn progress for a mix, which end of the spectrum represents fluid #1 (the fluid i 'picked up') 0 or 1? And as GWB titrates in the 'picked up' fluid, it gets rid of some of fluid #2, correct? So that when Rxn progress = 0.5 that means there are equal parts fluid #1 and fluid #2/ Thank you

Hi, I'm wondering if you, Jonathan, were able to modify the latest PHREEQC database for GWB. If so, are you free to distribute it to others? Thanks Peter

Thanks very much!

Hi, I realize there is a tutorial on the GWB website and information about mixing two fluids in the different manuals, but after reading those instructions I'm still having trouble. My steps are: Input fluid #1 in react Run Run>Pickup>System>Entire/fluid (I've tried both) when I go back to the basis pane to input fluid #2, the basis pane is populated by the results of fluid #1. I assumed it didn't matter and proceeded as follows: input fluid #2 config>stepping>flash>fluid/system (I've tried both) Run When I try to plot anything in gtplot, there is only 1 data point, not a line spanning the entire reaction progress. The results from this are very similar from when I just input fluid #2 and then Run. Any help would be appreciated. Thank you

Yes it does, thank you!

Hi, I have the following information and am wondering if it is possible to calculate the pH. I do not know anything more specific about the alkalinity. All concentrations are mg/L. The sample is open to the atmosphere Ba ++ 383 Ca ++ 2438 Fe ++ 5.904 K+ 109.1 Li+ 24.9 Mg++ 238 Mn++ 1.672 Na+ 11786.4 SiO2 (aq) 42.55 Sr++ 431.2 Cl- 23100.0 SO4-- 35.5 Br- 263 NO3- 17.9 Carbonate Alkalinity 292 mg/L as CaCO3 Thank you!