Fracturing Stocks List
Symbol | Grade | Name | % Change | |
---|---|---|---|---|
PTEN | F | Patterson-UTI Energy, Inc. | 2.29 | |
ENSV | F | Enservco Corporation | -7.63 |
Related Industries: Industrial Metals & Minerals Oil & Gas Drilling Oil & Gas Equipment & Services Oil & Gas Integrated Pollution & Treatment Controls
Symbol | Grade | Name | Weight | |
---|---|---|---|---|
PXJ | D | PowerShares Dynamic Oil Services | 18.55 | |
XES | D | SPDR S&P Oil & Gas Equipment & Services ETF | 14.34 | |
OIH | D | Market Vectors Oil Services ETF | 9.28 | |
IEZ | D | iShares U.S. Oil Equipment & Services ETF | 8.7 | |
PSCE | D | PowerShares S&P SmallCap Energy Portfolio | 6.51 |
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- Fracturing
A fracture is the separation of an object or material into two or more pieces under the action of stress. The fracture of a solid usually occurs due to the development of certain displacement discontinuity surfaces within the solid. If a displacement develops perpendicular to the surface of displacement, it is called a normal tensile crack or simply a crack; if a displacement develops tangentially to the surface of displacement, it is called a shear crack, slip band, or dislocation.Brittle fractures occur with no apparent deformation before fracture; ductile fractures occur when visible deformation does occur before separation. Fracture strength or breaking strength is the stress when a specimen fails or fractures. A detailed understanding of how fracture occurs in materials may be assisted by the study of fracture mechanics.
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