Wellbore cooling during treatment operations like acidizing and fracing

[65CCJ]

I have hears two different opinions of that the downhole wellbore temp will be after treating with cooler fluids like acid and fracing.

If you were fracing though a sleeve, packer or other device with seals, would you expect the temperature of the wellbore equipment to drop durig treatment?
I realize there are lots of factors that would influence this so this is just a general question. Assume this is basic acid job with straddle packer and you stimulate 6 zones. ca you expect the tools to cools enough it cold affect the temperature of elastomers?

Is there a program that is available that can help determine what to expect and deign for?

Thanks for your help.

CJ

Thanks,

War Man