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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.
Shale gas is one of a number of unconventional sources of natural gas; others include coalbed methane, tight sandstones, and methane hydrates. Shale gas areas are often known as resource plays [27] (as opposed to exploration plays). The geological risk of not finding gas is low in resource plays, but the potential profits per successful well ...
The global oil shale industry started to grow slightly in the mid-1990s although most of the industries were ceased in Russia. [122] Oil-shale-fired power stations in Slantsy and Syzran were converted to use natural gas and fuel oil. Also, shale-oil producer Zavod Slantsy ceased oil-shale processing.
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 history of the oil shale industry in the United States goes back to the 1850s; it dates back farther as a major enterprise than the petroleum industry. But although the United States contains the world's largest known resource of oil shale, the US has not been a significant producer of shale oil since 1861.
According to a Dallas Fed survey, US oil company chiefs plan to increase spending in 2025. 58% of shale execs said they would increase spending, and 34% said they would increase investment.
Environmental Protection Agency illustration of the water cycle of hydraulic fracturing. Fracking in the United States began in 1949. [1] According to the Department of Energy (DOE), by 2013 at least two million oil and gas wells in the US had been hydraulically fractured, and that of new wells being drilled, up to 95% are hydraulically fractured.
Oil shale gas has served as a substitute for natural gas. [4] In the 19th century and in the beginning of the 20th century oil shale gas was used as illuminating gas. In the 1920s, gas plants in Tallinn and Tartu produced oil shale gas as a town gas. [3] Since 1948, Estonian-produced oil shale gas was used in Leningrad and the cities in North ...