Miller Energy has been producing oil & natural gas in Michigan since the early 1950′s. Beginning in 1989, Miller Energy began producing natural gas from the Antrim Shale formation. To date Miller Energy has drilled more than 900 Antrim Shale gas wells in the northern Michigan Basin.
The Antrim Shale is a major source of shale gas, and produces natural gas along a swath of land across the northern part of the state. Most natural gas production is in Antrim, Crawford, Montmorency, Oscoda and Otsego counties.
Although the Antrim Shale has produced gas since the 1940s, the play was not active until the late 1980s. During the 1990s, the Antrim became the most actively drilled shale gas play in the US, with thousands of wells drilled. In more recent years, the use of directional drilling has allowed operators to produce the gas more efficiently and effectively.
To date, the shale has produced more than 2.5 TCF from more than 9,000 wells. In 2007, the Antrim gas field produced 136 billion cubic feet of gas, making it the 13th-largest source of natural gas in the United States.