Introduction：
The hydraulic underreamer is activated by dropping a ball or through differential pressure, with hydraulic force driving the blades to extend from the tool body for underreaming operations. After the operation, reducing the pump flow rate or activating the shifting mechanism retracts the blades.
Features and Benefits：
★ Manufactured from high-strength alloy steel.
★ Laser cladding applied to areas prone to erosion.
★ High-efficiency, long-life blade design.
★ Customized blade design based on formation characteristics.
Type | Max BOD in | Length mm | Reaming Range in | Min. Hole Size in | I.D. /Ball mm | Act Press MPa | Max Working Press MPa | Max Temp. ℃ |
Max Flow L/s |
Connection |
HU4500 |
4.5 |
1926 |
4 3/4-5 3/4 |
4 3/4 | 22/24 |
2.0 |
35 |
175 |
14.5 | NC31 |
HU5625 |
5.625 |
2970 |
5 3/4-7 |
5 3/4 | 28/30 |
2.0 |
35 |
175 |
22.5 | NC38 |
HU5800 |
5.8 |
2970 |
6 1/2-7 3/8 |
6 1/8 | 28/30 |
2.0 |
35 |
175 |
22.5 | NC38 |
HU7250 |
7.25 |
3110 |
8/9 |
7 1/2 | 28/30 |
2.0 |
35 |
175 |
22.5 | NC38 |
HU8000 |
8 |
3275 |
8 1/2-10 1/4 |
8 1/4 | 40/45 |
2.0 |
35 |
175 |
47.5 | NC50 |
HU9250 |
9.25 |
3275 |
9 1/2-11 3/4 |
9 1/2 | 40/45 |
2.0 |
35 |
175 |
47.5 | NC50 |
HU10000 |
10 |
3490 |
11-12 1/4 |
10 1/2 | 54/58 |
2.0 |
35 |
175 |
70 | 6 5/8REG |
HU11625 |
11.625 |
3815 |
13 1/2-15 |
12 1/8 | 54/58 |
2.0 |
35 |
175 |
75 | 6 5/8REG |
HU13000 |
13 |
3887 |
14 5/16-16 1/2 |
13 1/2 | 65/70 |
2.0 |
35 |
175 |
75 | 6 5/8REG |
HU16000 |
16 |
3789 |
17 1/2-20 |
16 1/2 | 65/70 |
2.0 |
35 |
175 |
75 | 6 5/8REG |
