[mixing fluids]

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

[mixing fluids]

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

[mixing fluids]

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

[Modifying PHREEQc database for use in GWB]

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

[mixing fluids]

Thanks very much!

[mixing fluids]

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

[pH calculation]

Yes it does, thank you!

[pH calculation]

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!