Is Marathon Oil Exiting the Marcellus Shale? September 27, 2012 Energy Companies, Marathon Oil, Triana Energy Rumors are leaking that Marathon Oil Corp. has put 80,000 Marcellus Shale acres in West Virginia and Pennsylvania up for sale in an effort to trim back on “non-core” assets. Here’s what’s being reported: Please Login to view this content. (Not a member? Join Today!) Related Post navigation PA Towns Complain about PUC Act 13 Zoning ReviewMarkWest Announces Commitment for Mariner East NGL Pipeline You do not have permission to view the comments. Click here to cancel reply.Please Login to post a comment Notify me of follow-up comments by email.