Subscribe to Blog ContentThe bulk of Antrim Shale Play lives in Michigan with some of the shale in Ohio and Indiana. Originally known as St. Cleric, Antrim is a late Devonian age formation in the Michigan basin that consists of organic-rich upper and lower black shale. It also has some middle gray shale or limestone.
Background on Antrim Shale
Antrim first saw production in 1940 and picked up the pace in the 1980s. The counties of Antrim, Crawford, Kalkaska, Missaukee, Montmorency, Oscoda and Otsego see the most exploration and production action on the play's 39,000 square miles.
Antrim has almost 10,000 active gas wells producing over 30 million cubic feet of natural gas per day. Antrim has a reserve life of more than 20 years and over 95 percent drill success rate.
The shale appears 200 to 2,000 feet below the surface. This is shallow for a shale play. As a result, residents worry about fracking's effects on the environment and water supply.
Antrim Companies
As Michigan's largest producer, Atlas Energy has 2,400 wells in production with 700 more planned. Atlas also has a presence in Marcellus Shale, Chattanooga in Tennessee and New Albany in Indiana. Atlas produces over 57 million cubic feet equivalent per day on its 270,000 net developed acres. The company also has 30,000 net undeveloped acres.
Most of BreitBurn Energy Partners' Michigan acreage is in Antrim. In 2008, the company had 90 productive wells on the play.
LINN Energy, LLC paid $330 million to HighMount Exploration & Production LLC for acreage in northern Michigan. LINN has invested in Antrim because of optimization opportunities and low-risk drilling. The company also has oil projects in Permian Basin and horizontal drilling activities in Granite Wash. LINN reports plans to add properties in East Texas Oil Field in Gregg and Rusk Counties.
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