2017-11-03
API Casing Dimensions & Bit Clearance Data
| Dimensions | Bit Size and Diameter Clearance | |||||||
| Size OD | Weight Per Foot Nominal | Wall | Nominal ID | Coupling OD | Drift | Nominal Bit Size | Clearance From Drift Dia. | |
| Inches | Pounds | Inches | Inches | Decimal | Inches | |||
| 4 1/2 | 9.5 | 0.205 | 4.09 | 5 | 3.965 | 3 7/8 | 3.875 | 0.09 |
| 11.6 | 0.25 | 4 | 5 | 3.875 | 3 7/8 | 3.875 | 0 | |
| 13.5 | 0.29 | 3.92 | 5 | 3.795 | 3 3/4 | 3.75 | 0.045 | |
| 15.1 | 0.337 | 3.826 | 5 | 3.701 | 3 5/8 | 3.625 | 0.076 | |
| 5 | 11.5 | 0.22 | 4.56 | 5.563 | 4.435 | 4 1/4 | 4.25 | 0.185 |
| 13 | 0.253 | 4.494 | 5.563 | 4.369 | 4 1/4 | 4.25 | 0.119 | |
| 15 | 0.296 | 4.408 | 5.563 | 4.283 | 4 1/4 | 4.25 | 0.033 | |
| 18 | 0.362 | 4.276 | 5.563 | 4.151 | 4 1/8 | 4.125 | 0.026 | |
| 5 1/2 | 13 | 0.228 | 5.044 | 6.05 | 4.919 | 4 3/4 | 4.75 | 0.169 |
| 14 | 0.244 | 5.012 | 6.05 | 4.887 | 4 3/4 | 4.75 | 0.137 | |
| 15.5 | 0.275 | 4.95 | 6.05 | 4.825 | 4 3/4 | 4.758 | 0.075 | |
| 17 | 0.304 | 4.892 | 6.05 | 7.767 | 4 3/4 | 4.75 | 0.017 | |
| 20 | 0.361 | 4.778 | 6.05 | 4.653 | 4 5/8 | 4.625 | 0.028 | |
| 23 | 0.415 | 4.67 | 6.05 | 4.545 | 4 1/2 | 4.5 | 0.045 | |
| 6 | 15 | 0.238 | 5.524 | 6.625 | 5.399 | 5 3/8 | 5.375 | 0.024 |
| 18 | 0.288 | 5.424 | 6.625 | 5.299 | 5 1/8 | 5.125 | 0.174 | |
| 20 | 0.324 | 5.352 | 6.625 | 5.227 | 5 1/8 | 5.125 | 0.102 | |
| 23 | 0.38 | 5.24 | 6.625 | 5.115 | 4 7/8 | 4.875 | 0.24 | |
| 26 | 0.434 | 5.132 | 6.625 | 5.007 | 4 7/8 | 4.875 | 0.132 | |
| 6 5/8 | 17 | 0.245 | 6.135 | 7.39 | 6.01 | 6 | 6 | 0.01 |
| 20 | 0.288 | 6.049 | 7.39 | 5.924 | 5 7/8 | 5.875 | 0.049 | |
| 24 | 0.352 | 5.921 | 7.39 | 5.796 | 5 3/4 | 5.75 | 0.046 | |
| 28 | 0.417 | 5.791 | 7.39 | 5.666 | 5 5/8 | 5.625 | 0.041 | |
| 32 | 0.475 | 5.675 | 7.39 | 5.55 | 5 3/8 | 5.375 | 0.175 | |
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