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  2. Sweet crude oil - Wikipedia

    en.wikipedia.org/wiki/Sweet_crude_oil

    Per the "Regions and crude types" discussion above, California production is categorized by its own crude type. Sweet crude oil contains small amounts of hydrogen sulfide and carbon dioxide. High-quality, low-sulfur crude oil is commonly used for processing into gasoline and is in high demand, particularly in industrialized nations.

  3. Petroleum geochemistry - Wikipedia

    en.wikipedia.org/wiki/Petroleum_geochemistry

    Crude oil is most commonly organised into four types - light, heavy, sweet, and sour. [6] Petroleum is a non-renewable energy source (also known as a " fossil fuel "), so the efficacy of extraction and refining is important for its continued use; multiple techniques are used to detect and to extract crude oil, based on the source rock it is ...

  4. Commodity market - Wikipedia

    en.wikipedia.org/wiki/Commodity_market

    For many years, West Texas Intermediate (WTI) crude oil, a light, sweet crude oil, was the world's most-traded commodity. WTI is a grade used as a benchmark in oil pricing. It is the underlying commodity of Chicago Mercantile Exchange's oil futures contracts. WTI is often referenced in news reports on oil prices, alongside Brent Crude. WTI is ...

  5. Daqing Oil Field - Wikipedia

    en.wikipedia.org/wiki/Daqing_Oil_Field

    The Daqing Oil Field (simplified Chinese: 大庆油田; traditional Chinese: 大慶油田; pinyin: Dàqìng Yóutián), formerly romanized as "Taching", [1] [2] is the largest oil field in the People's Republic of China, located between the Songhua river and Nen River in Heilongjiang province.

  6. Petroleum industry in China - Wikipedia

    en.wikipedia.org/wiki/Petroleum_industry_in_China

    By 1993, internal demand for oil exceeded domestic production, and China became a net oil importer. [10] China became dependent on imported oil for the first time in its history in 1993 due to demand rising faster than domestic production. [4] In 2006, it imported 145 million tons of crude oil, accounting for 47% of its total oil consumption.

  7. Oil shale industry - Wikipedia

    en.wikipedia.org/wiki/Oil_shale_industry

    The oil shale industry is an industry of mining and processing of oil shale—a fine-grained sedimentary rock, containing significant amounts of kerogen (a solid mixture of organic chemical compounds), from which liquid hydrocarbons can be manufactured. The industry has developed in Brazil, China, Estonia and to

  8. History of the petroleum industry - Wikipedia

    en.wikipedia.org/wiki/History_of_the_petroleum...

    Oil field in California, 1938. The modern history of petroleum began in the nineteenth century with the refining of paraffin from crude oil. The Scottish chemist James Young in 1847 noticed a natural petroleum seepage in the Riddings colliery at Alfreton, Derbyshire from which he distilled a light thin oil suitable for use as lamp oil, at the same time obtaining a thicker oil suitable for ...

  9. Sweet oil - Wikipedia

    en.wikipedia.org/wiki/Sweet_oil

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