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borehole orientation

1. n. [Drilling]

Borehole direction. Borehole orientation may be described in terms of inclination and azimuth. Inclination refers to the vertical angle measured from the down direction—the down, horizontal, and up directions have inclinations of 0°, 90°, and 180°, respectively. Azimuth refers to the horizontal angle measured clockwise from true north—the north, east, south, and west directions have azimuths of 0°, 90°, 180° and 270°, respectively.

Synonyms: wellbore orientation

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