World News – weekly update on shales, 14-20 June 2014
Weekly update on shales, 14-20 June 2014
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Borehole
Borehole A cylindrical underground working made using drilling methods. Borehole depth is much higher than its diameter. The upper borehole section that is exposed on the ground surface is called borehole ...
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Borehole wall
Borehole wall Side walls of a borehole extending from borehole outlet and borehole bottom. ...
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Borehole axis
Borehole axis Geometric location of the borehole central points. ...
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Borehole outlet
Borehole outlet The upper section of a borehole on the ground surface. ...
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Mud (drilling fluid)
... used in drilling operations, which is injected to the borehole during drilling to remove cuttings from the borehole bottom and carry them to the ground surface, for drill stem cooling, ...
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Casing cementing
... Filling the space between casing string and the borehole wall with cement slurry in order to isolate groundwater from the well ...
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Conventional hydrocarbon reservoirs
... hydrocarbons. Oil and gas flow by natural lift to the borehole from permeable reservoir rocks. ...
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Drill site
... The location of plant and facilities that are required by borehole drilling operations. ...
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Drill stem
... on the drilling tool and delivering drilling fluid to the borehole bottom in order to remove broken rocks. ...
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Natural gas in unconventional reservoirs
... the rocks in order to enable controlled flow of gas to the borehole. ...