| Customization: | Available |
|---|---|
| Customized: | Customized |
| Standard: | API |
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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 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 |
1. Hole Opener
1. In the art of drilling, experts often initiate the process with a smaller hole, which is subsequently expanded using a hole opener.
This is a standard technique, especially vital when the drilling machine is of lower power or when handling end-holes of substantial size.
2. We have the capability to craft hole openers and provide tailored solutions based on the rock's hardness, the desired drilling depth,
and the size of the pilot hole. as well as the size of the end-hole.
3. When tricone bits are used as pilot bits, the hole opener transforms into a formidable rock bit.
This combination is always effective, especially for drilling wells of special sizes.
4. The robust design of the reamer typically includes four or more cones,
5. Featuring cutting-edge structures with top-tier tungsten carbide hard facing or premium inserts,
our techniques and formulas enhance the reamer's wear-resistant capability. The application of advanced techniques ensures maximum durability.
6. The pilot unit is a tricone bit,
7. With high-performance HNBR O-rings for exceptional bearing seal and state-of-the-art grease for lubrication,
8. Suitable for large-scale well, mining, and infrastructure projects, this product excels in various challenging applications.
9. Recommended Drilling Parameters: Please be aware that the size and number of cones are customizable based on
the specific requirements of our esteemed customers.
2. Advantages of Hole Opener Bits
The directional crossing operation, a staple in unexcavated projects, comprises three essential steps:
1. Oriented hole operation; 2. Hole opening; 3. Pipe pulling.
Of these, hole opening is the most demanding task, yet crucial to success. The key lies in selecting the appropriate hole opener,
based on the operational equipment and geological formation.
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