Shale gas appeared on the world market in 2001 due to the unprecedented rise in oil prices and its inability to meet growing fuel needs. This prevented its use at the time. Later, rock breakthrough technology was introduced in the United States of America, allowing the extraction of shale gas at a reasonable cost, given high oil prices. How can it be extracted? What impact on the environment?
– Shale gas components Shale gas is a natural gas that comes from oil shale, or organic clay, an organic clay buried hundreds of millions of years ago in the ancient sea floor. There are oil-bearing rocks at a depth of over 1500 meters and, although there is rock gas in the porous rocks, and access to it through conventional drilling, but most of it the amount of rock gas in the rocks of the source, which requires drilling to reach them, To reach the shale gas. Shale gas is mainly composed of methane, hydrocarbons and other carbonaceous and hydrogenated substances such as ethane, propane and butane, as well as carbon dioxide, nitrogen and hydrogen sulphide.
Shale gas : Sources of rock gas around the world Experts point out that most rock gas reserves are in countries that are not among the major producers of traditional natural gas, which has opened them to economic growth by reducing their imports from foreign sources of energy and by modifying the traditional division between rich energy producing countries. And energy poor countries: The table below shows the gas reserves of some countries, as reported by the US Energy Administration (EIA).