The Marcellus/Utica is the #1 natural gas producing play in the country. Last month the M-U region produced 33.6 billion cubic feet per day (Bcf/d), according to the U.S. Energy Information Administration’s December Drilling Productivity Report (see DPR: Most Shale Plays, Incl. M-U, Continue Big Drop in Production). The second highest-producing region was the Permian, producing 16.9 Bcf/d. Third highest was the Haynesville at 11.3 Bcf/d. So why do we say the Haynesville is the chief competitor to M-U?