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US shale gas basins, 2011. Shale gas in the United States is an available source of unconventional natural gas.Led by new applications of hydraulic fracturing technology and horizontal drilling, development of new sources of shale gas has offset declines in production from conventional gas reservoirs, and has led to major increases in reserves of U.S. natural gas.
The Marcellus natural gas trend is a large geographic area of prolific shale gas extraction from the Marcellus Shale or Marcellus Formation, of Devonian age, in the eastern United States. [2] The shale play encompasses 104,000 square miles and stretches across Pennsylvania and West Virginia, and into eastern Ohio and western New York. [ 3 ]
The field also seems to contain 16 trillion cubic feet of natural gas. [9] This is the first assessment of continuous resources in the Wolfcamp shale in the Midland Basin portion of the Permian. [9] During the 1980s, vertical wells produced oil in the Wolfcamp area. [10]
In 2000 shale gas provided only 1% of U.S. natural gas production; by 2010 it was over 20% and the U.S. Energy Information Administration predicted that by 2035, 46% of the United States' natural gas supply will come from shale gas. [3] The Obama administration believed that increased shale gas development would help reduce greenhouse gas ...
From 2002 to 2010 the Barnett was the most productive source of shale gas in the US; it is now third, behind the Marcellus Formation and the Haynesville Shale. In January 2013, the Barnett produced 4.56 billion cubic feet per day, which made up 6.8% of all the natural gas produced in the US. [4]
Producing natural gas from the Haynesville Shale involves drilling wells from 10,000 feet (3,000 m) and to 13,000 feet (4,000 m) deep; the formation becomes deeper to the south. In 2008, the Haynesville Shale was thought to be the largest natural gas field in the contiguous 48 states with an estimated 250 trillion cubic feet (7.1×10 12 m 3 ...
The Antrim Shale, is a major source of shale gas, and produces natural gas along a swath across the northern part of the state. [2] Most natural gas production is in Antrim, Crawford, Montmorency, Oscoda and Otsego counties. [3] Although the Antrim Shale has produced gas since the 1940s, the play was not active until the late 1980s.
Natural gas is produced from wells completed in the New Albany Shale in the southern part of the basin in Indiana and western Kentucky. As of 2001, technically recoverable shale gas in the New Albany was estimated to be between 1.9 and 19.2 trillion cubic feet. [4] More recently reserves have been estimated as high as 160 trillion cubic feet. [5]