STANDARD HANDBOOK OF PETROLEUM & NATURAL GAS ...

Drill String: Composition and Design 739
Table 4-79
New Drill Pipe-Dimensional Data [51l
~~
1 2 3 4 5 8 7
5.*ion
Nominal Area Pokr
Size Weight Plain
Sectional
OD ThmdS6 End wall ID
Pipe' Modulus*
in. Couplings Weight' Thickners in. sq. in. cu. in
D Iblfl Iblfl In. d A z
22 4.85 4.43 .190 1.885 1.3042 1.321
6.a 6.26 380 1.815 1.6429 1.733
2% 8.05 6.16 217 2.441 1.8120 2.241
10.40 9.72 .362 2.151 2.8579 3.204
3% B.50 6.61 ,254 2.892 2.5802 3.921
13.W 12.31 366 2.764 3.(1209 6.144
15.50 14.63 .449 2.802 4.m7 5.847
4 11.05 10.48 .262 9.478 3.0767 6.400
14.00 1299 s30 8.340 3.8048 8.456
15.70 14.69 .360 3240 4.3216 7.157
4s 13.75 12.24 ,271 3.w 3.8004 7.184
16.80 14.96 337 9.628 4.4074 as43
20.00 18.69 .oo 3.m 5.4961 10232
22.82 21.36 ,500 3.540 6.2632 11.345
5 18.25 14.87 .2a6 4.400 4.3743 9.718
19.50 17.93 ,362 4.278 5.2746 11.415
25.60 24.03 .m 4JYm 7.0666 14.491
5H 19.20
21.90
16.87
19.81
,301
361
4.m
4.776
4.9624
5.6282
12.221
14.062
24.70 22.54 A15 4.670 6.6296 15.668
696 25.20 22.19 .330 5.985 6.5262 19.572
'Ibm * 3SW6 x A (col. 6)
'A = 0.7654 (D, - d*)
'2 = 0.19635 (!y)
G~ = tangential stress in psi (9 0 for burst pressure, oz < 0 for collapse
pressure)
or = radial stress (usually neglected for the drill pipe strength analysis)
z = shear stress in psi
The yielding of pipe does not occur provided that the equivalent stress is less
than the yield strength of the drill pipe. For practical calculations, the equivalent
stress is taken to be equal to the minimum yield strength of the pipe as specified
by API. It must be remembered that the stresses being consadered in Equation 4-54 are
the effective stresses that exist beyond any isotropic stresses caused by hydrostatic pressure
of the drilling fluid.
(text continued on page 744)