6.500 X 3.250 DS50 Tool Joint Wear

FOR REFERENCE ONLY
Drill Pipe Performance Characteristics © Pipe Size and Weight: 5" 19.50 H-Series®
Pipe Grade: S-135
Range: 2
Tool Joint: 6.500 X 3.250 DS50
Pipe
New Premium New Premium
OD (in) 5.000 4.855 Torsional strength (ft-lbs) 74,100 58,100
Wall thickness (in) 0.362 0.290 Tensile strength (lbs) 712,100 560,800
ID (in) 4.276 4.276
Calculated plain end weight (lbs/ft) 17.913 14.106 80% Torsional strength (ft-lbs) 59,300 46,500
Note: Premium properties are calculated based on uniform OD and wall thickness.
Cross sectional area pipe body (in²) 5.275 4.154 Pressure capacity (psi) 17,105 16,105
Cross sectional area OD (in²) 19.635 18.514 Collapse capacity (psi) 15,672 10,029
Cross sectional area ID (in²) 14.360 14.360
Section modulus (in³) 5.708 4.476
Polar section modulus (in³) 11.415 8.953
Tool Joint (120000 material Yield Strength) Drill pipe assembly with Grant Prideco
DS50 OD (in) 6.500 DS50 HI TORQUE® Connection
ID (in) 3.250
Pin tong length (in) 9.0 Adjusted weight (lbs/ft) 22.57
Box tong length (in) 12.0 Approximate length (ft) 31.42
Torsional Strength (ft-lbs) 71,900 Fluid displacement (gal/ft) 0.345
Max Recommended Make-up Torque (ft-lbs) 43,100 Fluid capacity (gal/ft) 0.726
Min Recommended Make-up Torque (ft-lbs) 30,800
Drift size (in) 3.125
Balance OD (in) 6.435
Tensile strength (lbs) 1,269,200
Tool joint/Drill pipe torsional ratio (New pipe) 0.97
Tool joint/Drill pipe torsional ratio (Prem pipe) 1.24
Min OD for premium class (in) 5.938
Minimum make-up is based on shoulder separation caused by bending.
Brian Christen 8/5/2003

Torque Tension Curve: 5" 19.50 H-Series® S-135 Premium Class Drill Pipe with
6.500 1,400,000 X 3.250 DS50 HI TORQUE® Tool Joint. Curve Based on Calculation Method
in API RP7G. Safety Factor =1.0
Applied Tensile Load (lbs)
1,200,000
1,000,000
800,000
600,000
400,000
200,000
0
Brian Christen
0 10,000 20,000 30,000 40,000 50,000 60,000 70,000 80,000
Applied Torsional Load (ft-lbs)

Torsional Strength (ft-lbs)
80,000
70,000
60,000
50,000
40,000
30,000
20,000
10,000
0
Brian Christen
6.500 X 3.250 DS50 Tool Joint Wear
6.50 6.38 6.25 6.13 6.00 5.88 5.75
Tool Joint OD (in)
3.250 in ID DS50
80% 5" 19.50 H-Series® S-135 Prem Pipe
Max Recommended Make-up Torque
Min Recommended Make-up Torque