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OD ID Length connection style
In mm in mm mm
31/8 79.4 11/4 31.8 9150 NC23
31/2 88.9 11/2 38.1 9150 NC26(23/8IF)
41/8 104.8 2 50.8 9150 NC31(27/8IF)
43/4 120.7 2 50.8 9150 NC35
5 127 21/4 57.2 9150 NC38(31/2IF)
6 152.4 21/4 57.2 9150or9450 NC44
6 152.4 213/16 71.4 9150or9450 NC44
61/4 158.8 21/4 57.2 9150 or 9450 NC44
61/4 158.8 213/16 71.4 9150 or 9450 NC46(4IF)
61/2 165.1 21/4 57.2 9150 or 9450 NC46(4IF)
61/2 165.1 213/16 71.4 9150 or 9450 NC46(4IF)
63/4 171.4 21/4 57.2 9150 or 9450 NC46(4IF)
63/4 171.4 213/16 71.4 9150 or 9450 NC50(41/2IF)
7 177.8 21/4 57.2 9150 or 9450 NC50(41/2IF)
7 177.8 213/16 71.4 9150 or 9450 NC50(41/2IF)
71/4 184.2 213/16 71.4 9150 or 9450 NC50(41/2IF)
73/4 196.8 213/16 71.4 9150 or 9450 NC56
8 203.2 213/16 71.4 9150 or 9450 NC56
81/4 209.6 213/16 71.4 9150 or 9450 65/8REG
9 228.6 213/16 71.4 9150 or 9450 NC61
91/2 241.3 3 76.2 9150 or 9450 75/8REG
93/4 247.6 3 76.2 9150 or 9450 NC70
10 254.0 3 76.2 9150 or 9450 NC70
11 279.4 3 76.2 9150 or 9450 85/8REG
Drill Collar