Definition of downhole in English:

downhole

Line breaks: down|hole

adjective & adverb

Pronunciation: /ˈdaʊnhəʊl
 
/
(In the oil industry) used, occurring, or performed in a well or borehole.
More example sentences
  • Method and apparatus for navigational drilling with a downhole motor employing independent drill string and bottomhole assembly rotary orientation and rotation
  • Equipment maker Smith International Inc. has announced a 3% to 5% hike for such gear as drill fluids, bits, and downhole drilling tools.
  • This unit is extraordinarily rich in organic carbon (> 50 wt% TOC in some parts, Huc et al. 1992; Herbin et al. 1995) and readily recognizable in the field and in downhole logs.

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Word of the day erroneous
Pronunciation: ɪˈrəʊnɪəs
adjective
wrong; incorrect