The wellbore itself, including the openhole or uncased portion of the well. Borehole may refer to the inside diameter of the wellbore wall, the rock face that bounds the drilled hole.

Any deep or long drill-hole, usually associated with a diamond drill.

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.

The hole as drilled by the drill bit.

The hole as drilled by the drill bit.

The circular hole made by drilling that extends from the surface to the gas resource to be recovered.

Hole made with drilling equipment.

Hole made with drilling equipment.

The hole in the earth created when drilling a well. Brine

A hole in the earth made by a drilling rig.

The hole as drilled by the drill bit.

The hole as drilled by the drill bit.   

bawr-hohl A hole made by drilling or boring; a wellbore.

  The hole in the earth made by the drill; the uncased drill hole from the surface to the bottom of the well.

the wellbore, with or without casing. See open hole.

The hole created by the drilling of a well.

The hole created by the drilling of the well.

A generalized term for a shaft bored into the ground.

A well, especially referring to the face of the rock outside or below the casing. Test boreholes are also sunk to examine the suitability of a site for major foundation work and to examine geological [..]

The hole created by the drilling (boring) of a well.

hole in Earth created by drill. Bottom Hole Temperature (BHT)

The hole created by the drilling of a well.

A hole bored into the ground to collect samples for analysis or to extract oil or water.