One small, private independent has staked an outsized position in the prolific Oklahoma Stack Play, and it has turned to a DrillCo joint venture (JV) with a private-equity provider to fund a portion of its drilling.
Hal Chappelle, president and CEO of Alta Mesa Holdings LP, called the Stack a top North American play at Hart Energy’s recent DUG Midcontinent Conference & Exhibition. Essentially, the Stack play is a juxtaposition of the Devonian Woodford Shale and several Mississippian unconventional reservoirs. These include the Meramec, a silty, carbonaceous shale, and the Osage, a porous carbonate.
Currently, the Stack Play is expanding north and west from its established area in Oklahoma’s Major, Kingfisher, Blane, Canadian and Dewey counties. Stratigraphically, the Stack is expanding across the entire Mississippian section and upward into such Pennsylvanian reservoirs as the Oswego Lime.