| Model |
(DP) Size(In) |
(Casing) Size(In) |
(Tubing) Size(In) |
Related Cap. (Short Tons) |
| DD -150 | 23/8-51/2 | 41/2-51/2 | 23/8-41/2 | 150 |
| DD -250 | 23/8-51/2 | 41/2-51/2 | 23/8-41/2 | 250 |
| DD -350 | 23/8-51/2 | 41/2-51/2 | 23/8-41/2 | 350 |
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