Table T5. CORK stinger tubular stretch per 1,000 lb load and 100 m length comparison, Expedition 336.
| Nominal pipe size (inches) |
Weight (lb/ft) |
OD (inches) |
ID (inches) |
Area (inch2) |
Load (lb) |
Length (m) |
Change in length (m) |
Joint strength (lb) |
Modulus of elasticity (lb/inch2) |
Yield or tensile strength (lb/inch2) |
|---|---|---|---|---|---|---|---|---|---|---|
| 4-1/2 csg | 10.5 | 4.500 | 4.052 | 3.009 | 1,000 | 100 | 0.0011 | 132,000 | 30,000,000 | 55,000 |
| 5-1/2 csg | 17.0 | 5.500 | 4.892 | 4.962 | 1,000 | 100 | 0.0007 | 229,000 | 30,000,000 | 55,000 |
| 5 DP | 22.1 | 5.000 | 4.250 | 5.449 | 1,000 | 100 | 0.0006 | 735,576 | 30,000,000 | 135,000 |
| 5-1/2 DP | 31.9 | 5.500 | 4.500 | 7.854 | 1,000 | 100 | 0.0004 | 1,060,290 | 30,000,000 | 135,000 |
| 4-1/2 FG | 3.5 | 4.570 | 3.980 | 3.962 | 1,000 | 100 | 0.0025 | 118,859 | 10,000,000 | 30,000 |
OD = outside diameter, ID = inside diameter. csg = casing, DP = drill pipe, FG = fiberglass. Change in length or stretch = (load × length)/(modulus of elasticity × area). Values for critical column load are based on a distributed load (weight per foot) rather than a point load applied at the top of the column.
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