Tubular steel conduit fitted with special threaded ends called tool joints. The drillpipe connects the rig surface equipment with the bottomhole assembly and the bit, both to pump drilling fluid to the bit and to be able to raise, lower and rotate the bottomhole assembly and bit.

The heavy seamless tubing normally made of steel used to rotate the bit and circulate the drilling fluid. Joints of pipes, generally approximately 30 feet long, are coupled together by means of tool j [..]

Pipe used in the drilling of an oil or gas well. Drill pipe is the conduit between the wellhead motor and the drill bit. Drilling mud is pumped down the center of the pipe during drilling, to lubricat [..]

See OCTG

Nine-meter-long base element of the drill string, used to drill several kilometers into the ground. As the borehole gets deeper, new pipes are attached to the previous ones.

dril pahyp Heavy seamless tubing used to rotate the bit and circulate the drilling fluid.

Steel pipe sections, approximately 9 metres long, that are screwed together to form a continuous pipe extending from the drilling rig to the drilling bit at the bottom of the hole. Rotation of the drill pipe and bit causes the bit to bore through the rock.