Skip to main content Skip to office menu Skip to footer
Capital IconMinnesota Legislature

Office of the Revisor of Statutes

4725.2350 STEEL CASING REQUIREMENTS.

Subpart 1.

General.

Steel casing used in the permanent construction of a well or boring must be new casing produced to:

A.

ASTM Standard A53/A53M-04a;

B.

ASTM Standard A589-96 (2001), Types I, II, and III; or

C.

API Standard 5L-04.

Steel casing must have the minimum weights and thicknesses specified in the table in subpart 2 subject to the tolerances in the specifications in this subpart.

Subp. 2.

Steel casing pipe weight and dimensions.

Size in Inches Plain End Wgt. Lbs. Per Ft. Thrds. & Cplgs.* Thrds. R&D Cplgs. Thickness in Inches
S 1 1.68 1.68 1.70 .133
c 1-1/4 2.27 2.28 2.30 .140
h 1-1/2 2.72 2.73 2.75 .145
e 2 3.65 3.68 3.75 .154
d 2-1/2 5.79 5.82 5.90 .203
u 3 7.58 7.62 7.70 .216
l 3-1/2 9.11 9.20 9.25 .226
e 4 10.79 10.89 11.00 .237
5 14.62 14.81 15.00 .258
4 6 18.97 19.18 19.45 .280
0 8 28.55 29.35 .322
10 40.48 41.85 .365
S 12 49.56 51.15 .375
t 14 54.57 57.00 .375
a 16 62.58 65.30 .375
n 18 70.59 73.00 .375
d 20 78.60 81.00 .375
a 22 86.61 .375
r 24 94.62 .375
d 26 102.63 .375
30 118.65 .375
W 32 126.66 .375
g 34 134.67 .375
t 36 142.68 .375

* Nominal weight based on length of 20 feet including coupling.

Steel casing up to ten inches in diameter must be Schedule 40. Larger diameter casing must be standard weight.

Diameter-Inches Couplings
External Internal Thrds. per Inch Minimum External Diameter Inches Minimum Length Inches
1.315 1.049 11-1/2 1.576 2-5/8
1.660 1.380 11-1/2 1.900 2-3/4
1.900 1.610 11-1/2 2.200 2-3/4
2.375 2.067 11-1/2 2.750 2-7/8
2.875 2.469 8 3.250 3-15/16
3.500 3.068 8 4.000 4-1/16
4.000 3.548 8 4.625 4-3/16
4.500 4.026 8 5.200 4-5/16
5.563 5.047 8 6.296 4-1/2
6.625 6.065 8 7.390 4-11/16
8.625 7.981 8 9.625 5-1/16
10.750 10.020 8 11.750 5-9/16
12.750 12.000 8 14.000 5-15/16
14.000 13.250 8 15.000 6-3/8
16.000 15.250 8 17.000 6-3/4
18.000 17.250 8 19.000 7-1/8
20.000 19.250 8 21.000 7-5/8
22.000 21.250
24.000 23.250
26.000 25.250
30.000 29.250
32.000 31.250
34.000 33.250
36.000 35.250

History:

17 SR 2773; 33 SR 211

Published Electronically:

September 2, 2008

Official Publication of the State of Minnesota
Revisor of Statutes