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(yè)。
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。
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 |