Here is one. Like I said, all the articles that list acetone are of the anti fracking variety. I suspect they all got their information from the same primary source and I don’t know what agency or media source that is. One example should suffice since they are all basically parroting the original source.
http://www.alive.com/articles/view/23262/fracking_in_canada
hundreds of chemicals may be used
May, as in maybe, maybe not, we don't know.
The links I provided are actual chemicals used and their maximum concentration. The FracFocus.org site list them by specific wells.
I don't claim to have read every combination, but I haven't found one that uses acetone, and they do not show up on the lists of chemicals considered for use.