I've seen several properties listed over the years with several gas wells -usually in the Daniel Boone national forest area (around Stanton) on lbar.com. I don't see anything currently. Pretty much any place you look in eastern or south eastern Kentucky is apt to have a well somewhere nearby. You can find maps here
Oil & Gas Data if you're looking for something specific.
If you're open to just contacting people to see if they're interested in selling, often you can pull one of those maps up then also google for the county clerks office of that county and get an online map with contact info for specific tracts of land.
Also, if you paste in google:
site:realtor.com kentucky "gas well"
or
site:
http://lexington.craigslist.org/ "gas well"