petroleum tar

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• Tar — is a viscous black liquid derived from the destructive distillation of organic matter. Most tar is produced from coal as a byproduct of coke production, but it can also be produced from petroleum, peat or wood.Types of tarGeneralThe word tar is… …   Wikipedia

• Petroleum coke — (often abbreviated Pet coke or petcoke) is a carbonaceous solid derived from oil refinery coker units or other cracking processes.[1] Other coke has traditionally been derived from …   Wikipedia

• Petroleum product — Petroleum products are useful materials derived from crude oil (petroleum) as it is processed in oil refineries. According to crude oil composition and demand, refineries can produce different shares of petroleum products. Largest share of oil… …   Wikipedia

• Petroleum production in Canada — Petroleum production is a major industry in Canada. In 2005, almost 25,000 new oil wells were spud (drilled) in Canada. Daily, over 100 new wells are spud in the province of Alberta alone [ [http://www.nickles.com/rig/ Canadian Rig Locator] ] .… …   Wikipedia

• Petroleum seep — For other uses of seep see Seep (disambiguation) Petroleum seep near the Korňa in northern Slovakia. A petroleum seep is a place where natural liquid or gaseous hydrocarbons escape to the earth s atmosphere and surface, normally under low… …   Wikipedia

• Petroleum — For other uses, see Petroleum (disambiguation). Proven world oil reserves, 2009 …   Wikipedia

• petroleum — petroleous, adj. /peuh troh lee euhm/, n. an oily, thick, flammable, usually dark colored liquid that is a form of bitumen or a mixture of various hydrocarbons, occurring naturally in various parts of the world and commonly obtained by drilling:… …   Universalium

• petroleum production — Introduction       recovery of crude oil and, often, associated natural gas from the Earth.        petroleum is a naturally occurring hydrocarbon material that is believed to have formed in deep sedimentary (sedimentary rock) beds from animal and …   Universalium

• tar sand — noun : a natural impregnation of sand or sandstone with petroleum from which the lighter portions have escaped * * * Geol. bituminous sand or sandstone from which asphalt can be obtained. [1895 1900] * * * tar sand noun A deposit of sand or… …   Useful english dictionary

• Petroleum politics — Argentine president Néstor Kirchner and Venezuelan President Hugo Chávez discuss the Gran Gasoducto del Suran energy and trade integration project for South America. They met on November 21, 2005 in Venezuela. Petroleum politics have been an… …   Wikipedia

• Petroleum reservoir — A petroleum reservoir, or oil and gas reservoir, is a subsurface pool of hydrocarbons contained in porous or fractured rock formations. The naturally occurring hydrocarbons, such as crude oil or natural gas, are trapped by overlying rock… …   Wikipedia