17 1/2" Steel 6 Blades PDC Drill Bits
17 1/2" Steel 6 Blades PDC Drill Bits
Polycrystalline diamond materials, for use in polycrystalline diamond compact (PDC) bits, are one of the most important material advances for oil drilling tools in recent years. Fixed-head bits rotate as one piece and contain no separately moving parts.
High Performance PDC Drill Bits
Roschen PDC drill bits are engineered to engage a wide range of drilling formations and applications while delivering smooth, consistent torque. Roschen PDC Drill Bits are the ideal choice for directional drilling, providing the ultimate in steerability thanks to a compact unibody profile coupled with proprietary PDC cutter technology. Our PDC Drill Bit cutting structures are complemented by Accelglide, allowing our customers to increase efficiency downhole.
Table of classification of formation hardness and bit selection | |||||
Roller cone bit IADC code | IADC code of diamond bit | Formation description | Rock type | Compressive strength(Mpa) | ROP(m/h) |
111/124 |
M/S112~M/S223 | Very soft:sticky soft formation with low compressive strength. | Clay Slitstone 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 |
Mediumsoft: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 |
PDC DRILL BITS SPECIFICATIONS | |||
NO. | ROCK BIT SIZE | REG.PIN API | |
in | mm | ||
1 | 3 3/4 | 95.3 | 2 3/8 |
2 | 3 7/8 | 98.4 | 2 3/8 |
3 | 4 1/8 | 104.8 | 2 3/8 |
4 | 4 1/4 | 108 | 2 3/8 |
5 | 4 1/2 | 114.3 | 2 3/8 |
6 | 4 5/8 | 117.5 | 2 7/8 |
7 | 4 3/4 | 120.7 | 2 7/8 |
8 | 4 7/8 | 123.8 | 2 7/8 |
9 | 5 1/2 | 139.7 | 3 1/2 |
10 | 5 5/8 | 142.9 | 3 1/2 |
11 | 5 2/3 | 143.9 | 3 1/2 |
12 | 4 3/4 | 146.1 | 3 1/2 |
13 | 5 7/8 | 149.2 | 3 1/2 |
14 | 6 | 152.4 | 3 1/2 |
15 | 6 1/8 | 155.6 | 3 1/2 |
16 | 6 1/4 | 158.8 | 3 1/2 |
17 | 6 1/2 | 165.1 | 3 1/2 |
18 | 6 5/8 | 168.3 | 3 1/2 |
19 | 6 3/4 | 171.5 | 3 1/2 |
20 | 7 1/2 | 190.5 | 4 1/2 |
21 | 7 5/8 | 193.7 | 4 1/2 |
22 | 7 7/8 | 200 | 4 1/2 |
23 | 8 3/8 | 212.7 | 4 1/2 |
24 | 8 1/2 | 215.9 | 4 1/2 |
25 | 8 5/8 | 219.1 | 4 1/2 |
26 | 8 3/4 | 222.3 | 4 1/2 |
27 | 9 1/2 | 241.3 | 6 5/8 |
28 | 9 5/8 | 244.5 | 6 5/8 |
29 | 9 7/8 | 250.8 | 6 5/8 |
30 | 10 1/2 | 266.7 | 6 5/8 |
31 | 10 5/8 | 269.9 | 6 5/8 |
32 | 11 | 279.4 | 6 5/8 |
33 | 11 5/8 | 295.3 | 6 5/8 |
34 | 12 | 304.8 | 6 5/8 |
35 | 12 1/4 | 311.2 | 6 5/8 |
36 | 12 5/16 | 312.7 | 6 5/8 |
37 | 13 3/8 | 314.3 | 6 5/8 |
38 | 12 7/16 | 315.9 | 6 5/8 |
39 | 12 5/8 | 320.7 | 6 5/8 |
40 | 13 1/8 | 333.4 | 6 5/8 |
41 | 13 1/2 | 342.9 | 6 5/8 |
42 | 13 5/8 | 346.1 | 6 5/8 |
43 | 13 3/4 | 349.3 | 6 5/8 |
44 | 14 1/2 | 368.3 | 7 5/8 |
45 | 14 3/4 | 374.7 | 7 5/8 |
46 | 15 1/2 | 393.7 | 7 5/8 |
47 | 16 | 406.4 | 7 5/8 |
48 | 17 1/2 | 444.5 | 7 5/8 |
49 | 18 7/8 | 479.4 | 7 5/8 |
50 | 20 | 508 | 7 5/8 |
51 | 22 | 558.8 | 7 5/8 |
52 | 24 | 609.6 | 7 5/8 |
53 | 26 | 660.4 | 7 5/8 |
54 | 28 | 711.2 | 7 5/8 |
55 | 30 | 762 | 7 5/8 |