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Hole Opener
Fixed Diameter Hole Opener is used for enlarging the surface hole which drilled by cone bit in advance, or connected above the cone bit. It applies to Onshore and offshore oilfield.
Cutters type :
"SM": Soft to medium formation;
"MH": Medium to hard formation;
"XH": Hard formation.
Main Technical Parameters
Hole Open Size（in） | Qty of Cutters | Min.Pilot Hole Size(in) | Fishing Neck OD(in) | ID(in) | Top Conn. | Bottom Conn. | Overall Length(in) |
12-1/4 | 3 | 8-1/2 | 8 | 1-1/2 | 6-5/8REG | 6-5/8REG | 55 |
16 | 3 | 10 | 9-1/2 | 2-1/4 | 7-5/8REG | 6-5/8REG | 60 |
17-1/2 | 3 | 10 | 9-1/2 | 2-1/4 | 7-5/8REG | 6-5/8REG | 60 |
22 | 3 | 12-3/4 | 9-1/2 | 2-1/4 | 7-5/8REG | 6-5/8REG | 70 |
26 | 3 | 17-1/2 | 10 | 3 | 7-5/8REG | 7-5/8REG | 70 |
36 | 4 | 26 | 10 | 3-1/2 | 7-5/8REG | 7-5/8REG | 90 |
