The Hole Opener is engineered for enlarging surface holes in both onshore and offshore oil field operations. This specialized tool is designed to expand holes pre-drilled by tricone bits, or it can be connected above the drill bit to perform simultaneous drilling and enlarging operations.
| Model | Working OD mm(inch) | ID mm(inch) | Body OD mm(inch) | Min. Pilot Hole Size mm(inch) | OAL mm(ff) | Connection | Cutter Qty. |
|---|---|---|---|---|---|---|---|
| KZ3-215 | 215.9(8-1/2) | 25.4(1) | 120.7(4-3/4) | 165.1(6-1/2) | 1524(5) | NC38 B×P | 3 |
| KZ3-311 | 311(12-1/4) | 38.1(1-1/2) | 203(8) | 216(8-1/2) | 1524(5) | 6-5/8REGB×P | 3 |
| KZ3-444 | 444.5(17-1/2) | 57.2(2-1/4) | 241.3(9-1/2) | 266.7(10-1/2) | 1752(5.7) | 7-5/8REG B×P | 3 |
| KZ3-584 | 584(23) | 76.2(3) | 241.3(9-1/2) | 355.6(14) | 1753(5.7) | 7-5/8REG B×P | 3 |
| KZ3-660 | 660.4(26) | 76.2(3) | 241.3(9-1/2) | 444.5(17-1/2) | 1753(5.7) | 7-5/8REGB×P | 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 B×P | 3 |
| KZ4-813 | 812.8(32) | 76.2(3) | 241.3(9-1/2) | 444.5(17-1/2) | 2540(8.3) | 7-5/8REGB×P | 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 B×P | 4 |
| KZ6-1067 | 1066.8(42) | 76.2(3) | 241.3(9-1/2) | 660.4(26) | 1955(6.4) | 7-5/8REG B×P | 6 |