Borehole

n. hole drilled in the Earth (for oil exploration, mining, soil sampling, etc.)

A borehole is the generalised term for any narrow shaft drilled in the ground, either vertically or horizontally. A borehole may be constructed for many different purposes including the extraction of water or fluid (such as oil) or gases (such as natural gas or methane), as part of a geotechnical investigation or environmental site assessment, for mineral exploration, or as a pilot hole for installing piers or underground utilities. Boreholes used as water wells are described in more depth in that article.
See more at Wikipedia.org...

Hole made with drilling equipment.

Any exploratory hole drilled into the Earth or ice to gather geophysical data. Climate researchers often take ice core samples, a type of borehole, to predict atmospheric composition in earlier years. See ice core.

borehole
danh từ lỗ khoang trong lòng đất (để lấy nước, dầu...)
(C) 2007 www.TừĐiểnTiếngViệt.net