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Roller Reamer
Roller reamer is designed for various reaming operation. It can be used in hard formation or abrasive formation, in order to keep the standard hole size. When the bit size is under the standard size, it can ream the well bottom size to standard hole size. Whether drilling the vertical well or directional well, it can make the bit or casing come into the normal hole size. The features of roller reamer are small frictional resistance with well wall, strong abrasive resistance and long life
Hardfacing of roller:
Type T: Soft formation
Type F: Medium-hard formation
Type B: Hard formation
Main Technical Parameters
Hole size inch(mm) | Roller Length | Fishing Neck OD inch(mm) | ID inch(mm) | OAL mm(inch) | Conn. | |
inch(mm) | Upper | Lower | ||||
5 7/8''(149.2) | 7 7/8''(200) | 4 3/4''(120.7) | 1 1/4''(31.8) | 55 1/8''(1400) | NC38 | NC38 |
3 1/2REG | ||||||
6''(152.4) | 7 7/8''(200) | 4 3/4''(120.7) | 1 1/4''(31.8) | 55 1/8''(1400) | NC38 | NC38 |
3 1/2REG | ||||||
8 1/2''(215.9) | 7 7/8''(200) | 6 1/2''(165.1) | 1 3/4''(44.5) | 68 7/64''(1730) | NC50 | NC50 |
4 1/2REG | ||||||
12 1/4''(311.1) | 11 13/16''(300) | 8''(203.2) | 2 13/16''(71.4) | 74 13/16''(1900) | 6 5/8REG | 6 5/8REG |
17 1/2''(444.5) | 12''(304) | 9''(228.6) | 3''(76.2) | 68 7/61''(1730) | 7 5/8REG | 7 5/8REG |
22''(558.8) | 15 3/4''(400) | 9 1/2''(241.3) | 3''(76.2) | 105''(2667) | 7 5/8REG | 7 5/8REG |
24(609.6) | 15 3/4''(400) | 9 1/2''(241.3) | 3''(76.2) | 110 15/64''(2800) | 7 5/8REG | 7 5/8REG |
26(660.4) | 15 3/4''(400) | 9 1/2''(241.3) | 3''(76.2) | 118 7/64''(3000) | 7 5/8REG | 7 5/8REG |
28(711.2) | 15 3/4''(400) | 9 1/2''(241.3) | 3''(76.2) | 112 7/8''(2867) | 7 5/8REG | 7 5/8REG |
