固定直徑擴孔器
Hole Opener
固定直徑擴孔器用于陸地油田和海洋油田擴鉆表層大孔，即它被用來擴大牙輪鉆頭預先鉆完的井眼，或者接于鉆頭之上，同時完成鉆、擴井作業。
牙輪有三種類型：“SM”型牙輪用于軟到中硬地層；“MH”型牙輪用于中硬至硬地層；“XH”型牙輪用于硬地層。
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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