SandProduction

Hey dear,

thanx for the provided information.
In our gas field also we have seen some sand production from gas wells.
All gas wells are having gravel pack and frac pack as a part of their lower completion to avoid sand production, but still in the frac pac wells (also cased hole ) sand production has been witnessed.
I need to understand whether it is reservoir sand or fines coming from frac pac.
Is there any means we can do sand transportation studies.

thanx
anu