| BAKKEN | BARNETT | EAGLE FORD | GRANITE WASH | HORN RIVER | MARCELLUS | MISSISSIPPI LIME | OPERATOR ASSETS |
| NIOBRARA | PERMIAN | PICEANCE/UINTA | POLAND | UTICA | WOODFORD | AUSTRALIA | COMPLETIONS |
From Hart Energy's Arkoma Playbook, 2009. ...
Following on the heels of the Barnett Shale, the Fayetteville Shale play in northern Arkansas is the second-largest gas shale ...