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The Mansfield Natural Gas Field is located west of Mansfield, Ohio, within the Appalachian foreland basin. The field is 1.5 miles (2.4 km) long by 1.4 miles (2.3 km) wide and is in a general oval shape, stretching northward. This field, although small, is an analog for many of the natural gas fields that occur within the Appalachian Basin.
The Marcellus is an example of shale gas, natural gas trapped in low-permeability shale, and requires the well completion method of hydraulic fracturing to allow the gas to flow to the well bore. The surge in drilling activity in the Marcellus Shale since 2008 has generated both economic benefits and environmental concerns—and thus ...
Map showing the location of the oil and gas assessment units (AU) for the Utica Shale in the Appalachian Basin Province. Utica Shale drilling and production began in Ohio in 2011. Ohio as of 2013 is becoming a major natural gas and oil producer from the Utica Shale in the eastern part of the state. [10]
Marcellus gas production has lowered the price of natural gas in the Mid-Atlantic states of the US, which previously were almost entirely dependent on gas pipelined in from the US Gulf Coast. From 2005 through 2008, wholesale gas prices at Mid-Atlantic states were $0.23 to $0.33 per million BTU above prices of the main Gulf Coast trading point ...
Besides coal mining and natural gas extraction, Appalachia faces other environmental issues, including deforestation, soil erosion, climate change, and water scarcity. Deforestation has negatively impacted the region's biologically diverse forests, reducing habitat for various species and altering the forest ecosystem.
The Black River Group is characterized by carbonates, primarily limestone. Some dolostones can be found in localized areas. [4] Due to fracturing and porosity naturally occurring with in the formation it servers as a gas reservoir throughout its reach. [5] It also serves as an oil reservoir in Michigan and North West Ohio. [5] [6]
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) of recoverable gas. More recently, as of 2009, the Haynesville was estimated to have 75 trillion cubic feet of recoverable gas, second only to the Marcellus Formation in the US. [11]
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.