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Hole Opener is usedto enlarge big surface hole in onshore and offshore oil field, that is, it is used to enlarge the hole pre-drilled by tricone bit, or it is connected above the drill bit to complete the drilling and enlarging operations at the same time. There are three type for cutter: type "SM"used for soft to medium formation; type "MH" used for medium to hard formation; type "XH" used for hard formation.
Model | OD mm(inch) |
ID mm (inch) |
Body OD mm(inch) |
Min.Pilot Hole Size mm(inch) |
0AL mm(ft) |
Connection | Cutter Qty |
KZ3-215 | 215.9(8-12 | 25.4(1) | 120.7(4-3/4 | 165.1(6-1/2) | 1524(5) | NC38BXP | 3 |
KZ3-311 | 311(12-1/4) | 38.1(1-1/2) | 203(8) | 216(8-1/2) | 1524 (5) | 6-5/8REG BXP | 3 |
KZ3-444 | 444.5(17-1/2) | 57.2(2-1/4) | 2413(9-1/2 | 266.7(10-12 | 1752(5.7) | 7-5/8REG BXP | 3 |
KZ3-584 | 584(23) | 76.2(3) | 241.3(9-1/2) | 355.6(14) | 1753(5.7) | 7-5/8REG BXP | 3 |
KZ3-660 | 660.4(26) | 76.2(3) | 241.3(9-1/2) | 444.5(17-1/2) | 1753(5.7) | 7-5/8REG BXP | 3 |
KZ3-813 | 812.8(32) | 76.2(3) | 241.3(9-1/2) | 444.5(17-1/2) | 1850(6.1) | 7-5/8REG BXP | 3 |
KZ4-813 | 812.8(32) | 76.2(3) | 241.3(9-12) | 444.5(17-1/2) | 2540(8.3) | 7-5/8REG BXP | 4 |
KZ4-914 | 914.4(36) | 89(3-1/2) | 241.3(9-1/2) | 444.5(17-1/2) | 2650(8.7) | 7-5/8REG BXP | 4 |
KZ6-1067 | 1066.8(42) | 76.23) | 241.3(9-1/2) | 660.4(26) | 1955(6.4) | 7-5/8REG BXP | 6 |
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