Aubrey McClendon was a landman and a high risk investor. He did not pioneer shale drilling. That was George Mitchell. Even Aubrey doesn’t make such claims in interviews.
The Two Sides Of Aubrey McClendon, America’s Most Reckless Billionaire
http://www.forbes.com/sites/christopherhelman/2011/10/05/aubrey-mcclendon-chesapeake-billionaire-wildcatter-shale/