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2. Oil analysis - Wikipedia

   en.wikipedia.org/wiki/Oil_analysis

   Oil sampling is a procedure for collecting a volume of fluid from lubricated or hydraulic machinery for the purpose of oil analysis. Much like collecting forensic evidence at a crime scene, when collecting an oil sample, it is important to ensure that procedures are used to minimize disturbance of the sample during and after the sampling process.

3. Automotive oil recycling - Wikipedia

   en.wikipedia.org/wiki/Automotive_oil_recycling

   Automotive oil recycling involves the recycling of used oils and the creation of new products from the recycled oils, and includes the recycling of motor oil and hydraulic oil. Oil recycling also benefits the environment: [ 1 ] increased opportunities for consumers to recycle oil lessens the likelihood of used oil being dumped on lands and in ...

4. Price of oil - Wikipedia

   en.wikipedia.org/wiki/Price_of_oil

   Oil traders, Houston, 2009 Nominal price of oil from 1861 to 2020 from Our World in Data. The price of oil, or the oil price, generally refers to the spot price of a barrel (159 litres) of benchmark crude oil—a reference price for buyers and sellers of crude oil such as West Texas Intermediate (WTI), Brent Crude, Dubai Crude, OPEC Reference Basket, Tapis crude, Bonny Light, Urals oil ...

5. List of oilfield service companies - Wikipedia

   en.wikipedia.org/wiki/List_of_oilfield_service...

   Oilfield service companies may produce, maintain, and repair equipment used in oil extraction and oil transportation. [1] In 2019, the global oilfield services market was US $ 267.8 billion. [ 2 ]

6. Fracking in the United States - Wikipedia

   en.wikipedia.org/wiki/Fracking_in_the_United_States

   Environmental Protection Agency illustration of the water cycle of hydraulic fracturing. Fracking in the United States began in 1949. [1] According to the Department of Energy (DOE), by 2013 at least two million oil and gas wells in the US had been hydraulically fractured, and that of new wells being drilled, up to 95% are hydraulically fractured.

7. Hydraulic fluid - Wikipedia

   en.wikipedia.org/wiki/Hydraulic_fluid

   A hydraulic fluid or hydraulic liquid is the medium by which power is transferred in hydraulic machinery. Common hydraulic fluids are based on mineral oil or water. [ 1 ] Examples of equipment that might use hydraulic fluids are excavators and backhoes , hydraulic brakes , power steering systems, automatic transmissions , garbage trucks ...