Hydraulic fracturing — is a method used to create fractures that extend from a borehole into rock formations, which are typically maintained by a proppant. The method is informally called fracing or hydrofrac. The technique is used to increase or restore the rate which … Wikipedia
Physics processing unit — A physics processing unit (PPU) is a dedicated microprocessor designed to handle the calculations of physics, especially in the physics engine of video games. Examples of calculations involving a PPU might include rigid body dynamics, soft body… … Wikipedia
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Marcellus Formation — Stratigraphic range: Middle Devonian … Wikipedia
Natural gas — For other uses, see Natural gas (disambiguation). Natural gas extraction by countries in cubic meters per year. Natural gas is a naturally occurring gas mixture consisting primarily of methane, typically with 0–20% higher hydrocarbons[1] … Wikipedia
Calfrac Well Services — Infobox Company company name = Calfrac Well Services Ltd. company company type = Public (tsx|CFW) foundation = 1999 location = Operates in Canada, the U.S., and Russia. Its head office is located in Calgary, Alberta. key people = Chairman: Ronald … Wikipedia
Discovery quadrangle — Mariner 10 photomosaic The Discovery quadrangle lies within the heavily cratered part of Mercury in a region roughly antipodal to the 1550 km wide Caloris Basin. Like the rest of the heavily cratered part of the planet, the quadrangle contains a… … Wikipedia
Barnett Shale — Infobox Oil field name = Barnett Shale region = Bend Arch Fort Worth Basin,Texas country = United States coordinates = locblock = offonshore = Onshore operators = Devon, Chesapeake, EOG, XTO, Range Resources, EnCana, ConocoPhillips, Quicksilver,… … Wikipedia
hand tool — any tool or implement designed for manual operation. * * * Introduction any of the implements used by craftsmen in manual operations, such as chopping, chiseling, sawing, filing, or forging. Complementary tools, often needed as auxiliaries to… … Universalium
Greece — /grees/, n. 1. Ancient Greek, Hellas. Modern Greek, Ellas. a republic in S Europe at the S end of the Balkan Peninsula. 10,583,126; 50,147 sq. mi. (129,880 sq. km). Cap.: Athens. 2. a city in W New York. 16,177. * * * Greece Introduction Greece… … Universalium