固定直径扩孔器
Hole Opener
固定直径扩孔器用于陆地油田和海洋油田扩钻表层大孔，即它被用来扩大牙轮钻头预先钻完的井眼，或者接于钻头之上，同时完成钻、扩井作业。
牙轮有三种类型：“SM”型牙轮用于软到中硬地层；“MH”型牙轮用于中硬至硬地层；“XH”型牙轮用于硬地层。
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.
Specifications | ||||||||
Model | Opening Size | Number | Pilot Hole(Min.) mm(inch) | Fishing Neck | UpperConn. | LowerConn. | ID | OAL |
KZ3-216 | 215.9 | 3 | 165.1 | 120.7 | NC38 | 3 1/2REG | 25.4 | 1524 |
KZ3-311 | 311 | 3 | 215.9 | 203.2 | 6 5/8REG | 4 1/2REG | 38.1 | 1524 |
KZ3-444 | 444.5 | 3 | 266.7 | 241.3 | 7 5/8REG | 7 5/8REG | 57.2 | 1752 |
KZ3-584 | 584 | 3 | 355.6 | 241.3 | 7 5/8REG | 7 5/8REG | 76.2 | 1753 |
KZ3-660 | 660.4 | 3 | 444.5 | 241.3 | 7 5/8REG | 7 5/8REG | 76.2 | 1753 |
KZ3-813 | 812.8 | 3 | 444.5 | 241.3 | 7 5/8REG | 7 5/8REG | 76.2 | 1850 |
KZ3-914 | 914.4 | 3 | 609.6 | 241.3 | 7 5/8REG | 7 5/8REG | 76.2 | 1905 |
KZ4-914 | 914.4 | 4 | 444.5 | 241.3 | 7 5/8REG | 7 5/8REG | 89 | 2650 |
KZ4-813 | 812.8 | 4 | 444.5 | 241.3 | 7 5/8REG | 7 5/8REG | 76.2 | 2540 |
KZ6-1067 | 1066.8 | 6 | 660.4 | 241.3 | 7 5/8REG | 7 5/8REG | 76.2 | 1955 |
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