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  2. Extraction of petroleum - Wikipedia

    en.wikipedia.org/wiki/Extraction_of_petroleum

    Tertiary recovery begins when secondary oil recovery is not enough to continue adequate extraction, but only when the oil can still be extracted profitably. This depends on the cost of the extraction method and the current price of crude oil. When prices are high, previously unprofitable wells are brought back into use, and when they are low ...

  3. Health and environmental impact of the petroleum industry

    en.wikipedia.org/wiki/Health_and_environmental...

    Petroleum extraction disrupts the equilibrium of earth's carbon cycle by transporting sequestered geologic carbon into the biosphere. The carbon is used by consumers in various forms and a large fraction is combusted into the atmosphere; thus creating massive amounts of the greenhouse gas, carbon dioxide, as a waste product.

  4. Petroleum industry - Wikipedia

    en.wikipedia.org/wiki/Petroleum_industry

    World oil reserves as of 2013. The petroleum industry, also known as the oil industry, includes the global processes of exploration, extraction, refining, transportation (often by oil tankers and pipelines), and marketing of petroleum products.

  5. Petroleum refining processes - Wikipedia

    en.wikipedia.org/wiki/Petroleum_refining_processes

    Petroleum refinery in Anacortes, Washington, United States. Petroleum refining processes are the chemical engineering processes and other facilities used in petroleum refineries (also referred to as oil refineries) to transform crude oil into useful products such as liquefied petroleum gas (LPG), gasoline or petrol, kerosene, jet fuel, diesel oil and fuel oils.

  6. BTX (chemistry) - Wikipedia

    en.wikipedia.org/wiki/BTX_(chemistry)

    About 70 percent of the global production of benzene is by extraction from either reformate or pyrolysis gasoline. [4] The BTX aromatics can be extracted from catalytic reformate or from pyrolysis gasoline by many different methods.

  7. Petroleum - Wikipedia

    en.wikipedia.org/wiki/Petroleum

    Oil extraction is simply the removal of oil from the reservoir (oil pool). There are many methods on extracting the oil from the reservoirs for example; mechanical shaking, [143] water-in-oil emulsion, and specialty chemicals called demulsifiers that separate the oil from water. Oil extraction is costly and often environmentally damaging.

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