http://www.corelab.com/rm/irs/studies/Lower-Smackover-Brown-Dense.aspx
http://www.haynesvilleplay.com/2011/07/southwestern-goes-public-on-smackover.html
Interestingly enough, when I worked for "ye giant chemical company", we did a project for a small plant in Magnolia, AK.
Nice country up there.