Brief introduce
Drill pipe is a portion of the overall drill string which connects the rig surface equipment with the bottom hole assembly and the bit both to pump drilling fluid to the bit and to be able to raise, lower and rotate the bottom hole assembly and the bit. It is a thick walled, hollow, steel piping used for both conventional as well as horizontal drilling.
Function
Drill pipe is the main component,its main function is transmit the torque,transport the drilling fluid and lengthen the drill string by connected one by one to reach the goal of deepening the borehole.
Steel grade
Steel grade Yield Tensile
E75 517-724 689
X95 655-862 724
G105 724-931 793
S135 931-1133 1000
Length
R1 18-22inch
R2 27-30inch
R3 38-45inch
Upset types
IU;EU;IEU
