Industry data: (2 7/8″ 6.50# N80 EUE)
From general drill pipe
ParameterValue (for 10.40 lb/ft, S-135)
Nominal Outer Diameter (OD)2.875 in
Nominal Weight10.40 lb/ft
Inside Diameter (ID)2.151 in
Wall thickness0.362 in
Drift Diameter1.963 in
Tube GradeS-135
Tensile Yield (new)385,830 lb
Premium (80%) Tensile~308,664 lb
Torsional Yield (new)20,800 ft-lb
Premium Torsional15,900 ft-lb
Burst (new / premium)29,747 / 28,640 psi
Collapse (new / premium)29,716 / 25,602 psi
Connection TypeAOH (for this spec)
Connection OD3⅞ in
Min Connection OD~3⅝ in
Connection ID~2 5⁄32 in
Adjusted Weight / ft11.01 lb/ft
Avg Joint Length / Joint Weight~31 ft
Displacement (open)0.168 gal/ft (0.400 bbl/100 ft)
Capacity0.189 gal/ft (0.450 bbl/100 ft)
Other variants exist (e.g. lighter weight 6.50 lb/ft N80, etc.). For example, the 2 7/8″ N80 EUE 8RD variant has OD = 2.875 in, ID = 2.441 in, wall = 0.217 in.
2 7/8″ Drill Stem / Drill Pipe
2 7/8"


