Drag bit
| Drag Bits Specifications |
| Item |
3 wings drag bits |
| Drag Bit Size(Inch) |
1 7/8"(47MM)~17 1/2"(444.5MM) |
| Drag Bit Connection |
2 3/8"~6 5/8" API reg pin |
| Dril rods dia. |
76mm, 89mm, 114mm, etc |
| Drag Bit Formation |
soft ,medium soft ,hard,medium hard,very hard formation |
Drag bit is a commonly used tool in workover operations. It is used to drill cement plug, punch sand bridge, salt bridge, scrape dirt and hard wax from casing wall and crystallize some minerals. It can also scrape the borehole to make the borehole wall clean and tidy.
It can be used in liner drilling, sidetracking drilling (which can destroy the keyway formed during sidetracking) or drilling and grinding the perforation shell cushion. Under the action of drilling pressure, the bottom is fed into the drilled material such as cement, and then rotated to make the Fed part cut in the circumferential direction, gradually drilling the drilled material. Side will be grinded and milled by the drill, cylindrical space, better repair the drilled hole.
Adavantages
High Quality Full Thickness Composites
Wide scope of application:
Practice has proved that the bit is suitable for drilling soft and medium-hard formations such as carbonate, limestone, cretaceous, claystone, siltstone and sandstone. Compared with general bits, especially for rock formations of grade 6-8, the effect is particularly remarkable.
Design features
1. Design of super-large outlet, smooth outlet, no blockage, no drilling and no washing
2. Utonomous design of threads to suit all drill pipe interfaces
3. Repeated grinding, repeated chemical treatment, dust-free welding composite
| Drag Bits specifications |
| Size |
Thread |
Approx.weight (lbs) |
| 2 3/4" - 3 1/2" |
N-Rod |
3 |
| 3 1/2" - 4 3/4" |
2 3/8" API Reg |
4 - 6.7 |
| 4 7/8" - 5 1/8" |
2 3/8" API Reg |
8.4 - 8.7 |
| 5 1/4" - 5 1/2" |
2 3/8" API Reg |
8.8 - 9.5 |
| 5 5/8" - 6" |
2 3/8", 3 1/2" API Reg |
9.4 - 10.6 |
| 6 1/8" - 6 1/4" |
2 3/8", 3 1/2" API Reg |
10.7 - 17 |
| 6 1/2" - 6 3/4" |
2 3/8", 3 1/2" API Reg |
18 - 18.6 |
| 5 1/2" - 6 3/4" |
2 3/8", 3 1/2" API Reg |
19 - 20.5 |
| 6 7/8" - 7 7/8" |
2 3/8", 3 1/2" API Reg |
21.2 - 22.7 |
| 8" - 9" |
3 1/2", 4 1/2" API Reg |
22.8 - 23.4 |
| 9 1/8" - 10 7/8" |
3 1/2", 4 1/2" API Reg |
23.6 - 31.3 |
| 7 7/8" - 8 7/8" |
3 1/2", 4 1/2" API Reg |
30 - 33.5 |
| 9" - 9 7/8" |
3 1/2", 4 1/2" API Reg |
34.5 - 36 |
| 7 7/8" - 9 7/8" (4 wing) |
3 1/2", 4 1/2" API Reg |
25.6 - 28.2 |
| 7 7/8" - 10" (4 wing) |
3 1/2", 4 1/2" API Reg |
44.5 - 50.7 |
| 10 5/8" - 11" |
3 1/2", 4 1/2" API Reg |
46 - 50 |
| 12" - 17 1/2" |
6 5/8" API Reg |
50 - 60 |
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| Notes: |
| Thread is 2 3/8" IF, 2 7/8" If is available |
| Step type with 4 wings is available |
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