Minn. R. agency 144, ch. 4725, WELL AND BORING GENERAL CONSTRUCTION AND USE REQUIREMENTS, pt. 4725.2350
Current through Register Vol. 49, No. 24, December 9, 2024
Steel casing used in the permanent construction of a well or boring must be new casing produced to:
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.
| 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 |
Minn. R. agency 144, ch. 4725, WELL AND BORING GENERAL CONSTRUCTION AND USE REQUIREMENTS, pt. 4725.2350
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