Definition
Tripping — Tripping is the process of running the drill string into the hole or pulling it out, one stand at a time, most often to change a worn drill bit or to run the bottomhole assembly to or from bottom.
Also known as: tripping, trip in, trip out, making a trip
What tripping is
Tripping is the operation of moving the drill string in or out of the wellbore. Tripping out (pulling out of hole, POOH) raises the string and racks it back in stands, typically to replace a dull bit or change the BHA; tripping in (running in hole, RIH) lowers the string back to bottom. Each stand is handled with the elevator and set in the slips as connections are broken or made up, so tripping is repetitive, time-consuming and a major contributor to non-drilling rig time.
Tripping also has important well-control implications: the string’s movement changes bottomhole pressure through swab and surge effects, and the hole must be kept full to maintain hydrostatic pressure as steel is removed.
Well-control and hole considerations
- Keep the hole full — track the trip tank to replace the volume of pulled pipe and avoid swabbing.
- Control speed — fast tripping surges (going in) or swabs (coming out) the well and can induce a kick.
- Watch for tight hole — drag can signal poor hole cleaning, sloughing or the onset of stuck pipe.
Efficient, safe tripping depends on well-maintained handling tools and disciplined trip-tank monitoring.
Why it matters for rentals
Reliable elevators, slips and safety clamps make tripping faster and safer. Explore our handling tools and drilling application, or contact us with your string details.