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At 301 billion metric tons, as estimated in 2005, the oil shale deposits in the United States are the largest in the world. There are two major deposits: the eastern US deposits, in Devonian-Mississippian shales, cover 250,000 square miles (650,000 km 2); the western US deposits of the Green River Formation in Colorado, Wyoming, and Utah, are ...
This is a list of countries by recoverable shale gas based on data collected by the Energy Information Administration agency of the United States Department of Energy. [1] Numbers for the estimated amount of recoverable shale gas resources are provided alongside numbers for proven natural gas reserves .
Lacustrine deposits have gained more attention recently due to containing valuable source rocks of oil, coal, and uranium. Lacustrine deposits generally provide productive mining conditions but can prove challenging when underground mines are attempted due to the poor shear strength of clays and silts as well as the amount of moisture often locked in the layers due to a low permeability ...
The largest deposits are found in the remains of large lakes such as the deposits of the Green River Formation of Wyoming and Utah, USA. Large lake oil shale basins are typically found in areas of block faulting or crustal warping due to mountain building. Deposits such as the Green River may be as much as 2,000 feet (610 m) and yield up to 40 ...
A 2016 estimate of global deposits set the total world resources of oil shale equivalent of 6.05 trillion barrels (962 billion cubic metres) of oil in place. [6] Oil shale has gained attention as a potential abundant source of oil. [7] [8] However, the various attempts to develop oil shale deposits have had limited success. Only Estonia and ...
Shale gas is an unconventional natural gas produced from shale, a type of sedimentary rock.Shale gas has become an increasingly important source of natural gas in the United States over the past decade, and interest has spread to potential gas shales in Canada, Europe, Asia, and Australia.
Map showing extent of the Bazhenov Formation continuous tight oil resource. The Bazhenov Formation or Bazhenov Shale is a geological stratum in the West Siberian basin. It was formed from sediment deposited in a deep-water sea in Tithonian–early Berriasian time. The sea covered more than one million square kilometers in the central basin area.
The list is incomplete; there are more than 25,000 oil and gas fields of all sizes in the world. [1] However, 94 % of known oil is concentrated in fewer than 1,500 giant and major fields. [ 2 ] Most of the world's largest oilfields are located in the Middle East , but there are also supergiant (>10 billion bbls ) oilfields in Brazil, Mexico ...