Drilling Engineering Association Project Proposal DEA #113 – Phase 2 “Drilling Gumbo Shale – A Study of Environmentally Acceptable Muds to Eliminate Shale.
MARCELLUS SHALE Natural Gas in Pennyslvania. Where is Marcellus Shale in PA? Marcellus Shale The contour lines tell thickness of the shale. Pink =
Marcellus Shale
