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Petroleum is a fossil fuel that can be drawn from beneath the Earth's surface. Reservoirs of petroleum are formed through the mixture of plants, algae, and sediments in shallow seas under high pressure.
Associated petroleum gas (APG), or associated gas, is a form of natural gas which is found with deposits of petroleum, either dissolved in the oil or as a free "gas cap" above the oil in the reservoir.
The pumpjack, such as this one located south of Midland, is a common sight in West Texas. An oil well is a drillhole boring in Earth that is designed to bring petroleum oil hydrocarbons to the surface.
A structure map, looking downward, generated by contour map software for an 8,500-ft-deep gas and oil reservoir in the Erath Field, Erath, Louisiana.The left-to-right gap near the top indicates a fault line between the blue and green contour lines and the purple, red, and yellow lines.
Because of the low quality of bunker fuel, when burnt it is especially harmful to the health of humans, causing serious illnesses and deaths. Prior to the IMO's 2020 sulfur cap, shipping industry air pollution was estimated to cause around 400,000 premature deaths each year, from lung cancer and cardiovascular disease, as well as 14 million childhood asthma cases each year.
Petroleum coke. Petroleum coke, abbreviated coke, pet coke or petcoke, is a final carbon-rich solid material that derives from oil refining, and is one type of the group of fuels referred to as cokes.
Anacortes Refinery, on the north end of March Point southeast of Anacortes, Washington, United States Grangemouth Refinery, in Scotland Jamnagar Refinery, the world's largest oil refinery, in Gujarat, India
An oil is any nonpolar chemical substance that is composed primarily of hydrocarbons and is hydrophobic (does not mix with water) and lipophilic (mixes with other oils). Oils are usually flammable and surface active.