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2. Underground pneumatic boring - Wikipedia

   en.wikipedia.org/wiki/Underground_pneumatic_boring

   The purpose of the drill is to create a tunnel under surface obstructions. First, the operator surveys the area and the obstacle (road, sidewalk, driveway). Utility locators must supervise any underground work, and the path most clear of utilities is chosen to send the tool through. The first hole is dug on one side of the obstacle.

3. Tripping (pipe) - Wikipedia

   en.wikipedia.org/wiki/Tripping_(pipe)

   Tripping pipe (or "Making a round trip" or simply "Making a trip") is the physical act of pulling the drill string out of the wellbore and then running it back in. This is done by physically breaking out or disconnecting (when pulling out of the hole) every other 2 or 3 joints of drill pipe at a time (called a stand ) and racking them ...

4. Pipe recovery operations - Wikipedia

   en.wikipedia.org/wiki/Pipe_recovery_operations

   Wireline truck performing pipe recovery on location in Alberta, Canada. Pipe recovery is a specific wireline operation used in the oil and gas industry, when the drill string becomes stuck downhole. Stuck pipe prevents the drill rig from continuing operations. This results in costly downtime, ranging anywhere from $10,000-1,000,000 per day of ...

5. Directional boring - Wikipedia

   en.wikipedia.org/wiki/Directional_boring

   Directional boring, also referred to as horizontal directional drilling (HDD), is a minimal impact trenchless method of installing underground utilities such as pipe, conduit, or cables in a relatively shallow arc or radius along a prescribed underground path using a surface-launched drilling rig. Directional boring offers significant ...

6. Drill cuttings - Wikipedia

   en.wikipedia.org/wiki/Drill_cuttings

   Drill cuttings [1] are broken bits of solid material removed from a borehole drilled by rotary, percussion, or auger methods and brought to the surface in the drilling mud. Boreholes drilled in this way include oil or gas wells, water wells, and holes drilled for geotechnical investigations or mineral exploration. [2]

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