Milled tooth Tricone Rock Drill Bits:
The milled tooth (steel tooth) tricone bits drilling for soft to medium rock formation.
The soft formation milled tooth tricone bits are used to drill low compressive strength, soft formation. Long projection tooth lengths are used on high offset cones to provide the greatest penetrations rates possible. Wear resistance hard facing is used to control tooth wear. On the softest bit types this hard facing completely covers the bit teeth.
The medium formation milled tooth tricone bits are used to drill high compressive strength, medium rock formation. Shoot projection teeth with reduced crest length are used in this series of bit designs. Durable hard facing is applied to reduce tooth wear.
Table of classification of formation hardness and bit selection
| Roller cone bit | IADC code of diamond bit | Formation description | Rock type | Compressive strength (Mpa) |
ROP(m/h) |
| IADC code | |||||
| 111/124 | M/S112~M/S223 | Very soft:sticky soft formation with low compressive strength. | Clay Siltstone sandstone |
<25 | >20 |
| 116/137 | M/S222~M/S323 | Soft:soft formation with low compressive strength and high drillability. | Clay rock Marl Lignite sandstone |
25~50 | 10~20 |
| 417/527 | M/S323~M/S433 | Medium soft:soft to medium formation with low compressive strength and steak. | Clay rock Marl Lignite Sandstone Siltstone Anhydrite Tuff |
50~75 | 5~15 |
| 517/537 | M322~M443 | Medium:medium to hard formation with high compressive strength and thin abrasive streak. | Mudstone Dark rock shale |
75~100 | 2~6 |
| 537/617 | M422~M444 | Medium hard:hard and dense formation with high compressive strength and medium abrasiveness. | Dark rock Hard shale Anhydrite Sandstone Dolomite |
100~200 | 1.5~3 |
Steel Tooth Tricone Bits Size
|
Regular Sizes
|
Regular IADC
|
API Reg Pin
|
Make-up Torque(N.m)
|
|
3 7/8"(98.4mm)
|
126/216/637
|
2 3/8
|
4100~4700
|
|
4 5/8"(117.4mm)
|
126/216/517/537/637
|
2 7/8
|
6100~7500
|
|
5 1/4"(133.3mm)
|
126/216/517/537/637
|
3 1/2
|
9500~12200
|
|
5 5/8"(142.8mm)
|
126/216/517/537/637
|
3 1/2
|
9500~12200
|
|
5 7/8"(149.2mm)
|
126/216/517/537/637
|
3 1/2
|
9500~12200
|
|
6"(152.4mm)
|
126/127/216/517/537/617/637
|
3 1/2
|
9500~12200
|
|
6 1/4"(158.7mm)
|
126/127/216/517/537/617/637
|
3 1/2
|
9500~12200
|
|
6 1/2"(165mm)
|
126/127/216/517/537/617/637
|
3 1/2
|
9500~12200
|
|
7 1/2"(190mm)
|
126/216/517/537
|
4 1/2
|
16300~21700
|
|
7 5/8"(193mm)
|
126/216/517/537
|
4 1/2
|
16300~21700
|
|
7 7/8"(200mm)
|
126/216/517/537
|
4 1/2
|
16300~21700
|
|
8 1/2"(215.9mm)
|
117/127/217/437/517/537/617/637
|
4 1/2
|
16300~21700
|
|
9 1/2"(241.3mm)
|
117/127/217/437/517/537/617/637
|
6 5/8
|
38000~43400
|
|
9 7/8"(250.8mm)
|
117/127/217/437/517/537/617/637
|
6 5/8
|
38000~43400
|
|
10 5/8(269.8mm)
|
117/127/137/217/517/537/617/637
|
6 5/8
|
38000~43400
|
|
11 5/8(295.3mm)
|
117/127/137/217/517/537/617/637
|
6 5/8
|
38000~43400
|
|
12 1/4"(311.1mm)
|
114/127/217/437/517/537/617/637
|
6 5/8
|
38000~43400
|
|
13 5/8"(346.0mm)
|
127/217/517/537/617/637
|
6 5/8
|
38000~43400
|
|
14 3/4"(374.6mm)
|
127/217/517/537/617/637
|
7 5/8
|
46100~54200
|
|
17 1/2"(444.5mm)
|
114/115/125/215/515/535/615/635
|
7 5/8
|
46100~54200
|
|
26"(660.4mm)
|
114/115/125/215/515/535/615
|
7 5/8
|
46100~54200
|
TRICONE BITS PRODUCE PROCESS
| Minimum Order Quantity | N/A |
| Price | |
| Packaging Details | Standard Export Delivery Package |
| Delivery Time | 7days |
| Payment Terms | T/T |
| Supply Ability | Based on Detailed Order |
