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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 ...
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 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.
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 ...
The Potential Gas Committee estimates that U.S. recoverable reserves will last 118 years at current production levels. [7] but production is expected to more than triple by 2020. [8] Because of the technological progress in industry fracking, George Mitchell is now known as the "pioneer of shale."
The Haynesville Shale is overlain by sandstone of the Cotton Valley Group and underlain by limestone of the Smackover Formation. [3] [4] It contains vast quantities of recoverable natural gas. This natural gas is known as "shale gas" because the wells produce from low permeability mudstones that are also the source for the natural gas. It was ...