Minnesota Administrative Rules
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:
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
History:
17 SR 2773; 33 SR 211
Published Electronically:
September 2, 2008
Official Publication of the State of Minnesota
Revisor of Statutes