fracturing of rock

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• Rock burst — In geology, a rock burst is a spontaneous, violent fracture of rock that can occur in deep mines. The opening of a mine shaft relieves neighboring rocks of tremendous pressure, which can literally cause the rock to explode as it attempts to re… …   Wikipedia

• Hydraulic fracturing —   Fracturing of rock at depth with fluid pressure. Hydraulic fracturing at depth may be accomplished by pumping water into a well at very high pressures. Under natural conditions, vapor pressure may rise high enough to cause fracturing in a… …   Energy terms

• rock — rock1 rockless, adj. rocklike, adj. /rok/, n. 1. a large mass of stone forming a hill, cliff, promontory, or the like. 2. Geol. a. mineral matter of variable composition, consolidated or unconsolidated, assembled in masses or considerable… …   Universalium

• Rock — /rok/, n. a male given name. * * * I In geology, a naturally occurring and coherent aggregate of minerals. The three major classes of rock igneous, sedimentary, and metamorphic are based on the processes that formed them. These three classes are… …   Universalium

• fracturing —    A formation of breaks in a rock due to folding or faulting [16] …   Lexicon of Cave and Karst Terminology

• 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

• Underground mining (hard rock) — A three dimensional model of an underground mine with shaft access Underground hard rock mining refers to various underground mining techniques used to excavate hard minerals, mainly those containing metals[1] such as ore containing gold …   Wikipedia

• Hydraulic Fracturing — refers to the procedure of creating fractures in rocks and rock formations by injecting a mixture of sand and water into the cracks to force underground to open further. The larger fissures allow more oil and gas to flow out of the formation and… …   Investment dictionary

• Hot dry rock geothermal energy — (HDR) is a type of geothermal power production that uses the very high temperatures (approx 200 Celsius) that can be found in rocks a few kilometers below ground. Electricity is generated by pumping high pressure water down a borehole (injection… …   Wikipedia

• Hot Dry Rock —   A geothermal energy resource that consists of high temperature rocks above 300 F (150 C) that may be fractured and have little or no water. To extract the heat, the rock must first be fractured, then water is injected into the rock and pumped… …   Energy terms

• hydraulic fracturing — noun A technique in which a mixture of water and sand is forced down an oil well (or similar) in order to create fractures in the oil bearing rock and thus release more oil. Syn: fracing, fracking, hydrofracking …   Wiktionary