There is a variety to predict to some extent the formation of scale of CaCO3(s), BaSO4(s), and forms of CaSO4(s), however when NORM is generated usually species of type Ba(Ra)SO4(s) are produced.
Oddo, J. E., and M. B. Tomson. "Why scale forms in the oil field and methods to predict it." SPE Production & Facilities 9.01 (1994): 47-54.
Good question.
I don't know any mathematical model to predict it. I think this modelling is not possible, because the big variability of the matrix rocks, oil formation, produced method, etc. It'll impact the type of scale which will be formed.
But, I'll follow this question, to see what our friends will say. Maybe someone has an idea.
Dear Gilberto,
That's right! There is no model, and it may not exist. However, it is quite common to predict scales of CaCO3, CaSO4 and BaSO4, starting from a chemical analysis of the waters, the point is that there are no simple correlations between the concentrations of the elements commonly found in water and the radioelements Ra -226 and Ra-228, although the species Ba(Ra)SO4 has been "identified", the concentration of Ra in water is around 10-10 ppm, if one wants to compare it with sodium of 10+4 ppm. At least find an advance that helps correlate chemical properties of water with the concentration of radioelement activity would be of great interest, but may not be possible due to the nature of the problem.
Regards,
Ender Araujo
If we could correlate this carbonates and sulfates with radioisotopes concentrations, it could be possible.
But, as you said, it was not made.
I have found these two articles, but only relate BaSO4(s) formations, in the case of Ba(Ra)SO4(S), through experimental findings. However, there is no correlation that evidences the possibility of predicting an incrustation of Ba(Ra)SO4(S).
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