Minnesota Administrative Rules
Agency 144 - Health Department
Chapter 4725 - WELLS AND BORINGS
WELL AND BORING GENERAL CONSTRUCTION AND USE REQUIREMENTS
Part 4725.2350 - STEEL CASING REQUIREMENTS

Universal Citation: MN Rules 4725.2350

Current through Register Vol. 49, No. 13, September 23, 2024

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

Statutory Authority: MS s 103I.101; 103I.111; 103I.205; 103I.221; 103I.301; 103I.401; 103I.451; 103I.501; 103I.525; 103I.531; 103I.535; 103I.541; 103I.621; 144.05; 144.12; 144.383; 157.04; 157.08; 157.09; 157.13

Disclaimer: These regulations may not be the most recent version. Minnesota may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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