| Customization: | Available |
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| 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. Drillers typically start with a smaller initial hole, then expand it using a hole opener. This method is a conventional practice, especially when dealing with lower-powered drilling machines or when the end-hole size is relatively large.
This regular drilling technology efficiently manages machine power and accommodates large-scale end-holes.
2. We custom-design hole openers and provide tailored solutions based on the rock hardness, drilling depth,
and pilot hole size to ensure optimal performance and precision. End-hole size adjustments are made to meet specific project needs.
3. By utilizing tricone bits as pilot bits, the hole opener transforms into a rock-adapted tool, ideal for specialized well drilling sizes.
This adaptation makes it consistently effective in niche drilling applications requiring specific measurements.
4. The reamer is intricately designed with four or more cones, optimizing its cutting efficiency.
5. Its cutting structure features premium tungsten carbide hard-facing or inserts,
with advanced formulas and techniques that significantly enhance wear-resistance capabilities of the reamer. This ensures durability and longevity, even in challenging drilling conditions.
6. A tricone bit functions as the pilot, providing stability and precision.
7. Seal and lubrication: Our products use high-performance HNBR O-rings for bearing seals and incorporate advanced grease for superior lubrication.
8. Product Applications: Perfectly suited for large-scale well drilling, mining projects, and diverse infrastructure applications,
9. Recommended Drilling Parameters: Please be aware that cone sizes and quantities are adjusted to meet the specific requirements of our customers,
ensuring tailored solutions for every drilling challenge.
2. Advantages of Hole Opener Bits
Directional crossing operations are pivotal in unexcavated projects, involving three essential stages:
1. Oriented hole operation; 2. Hole opening; 3. Pipe pulling.
Hole opening stands as the most demanding yet crucial task of this operation.
Selecting the right hole opener, based on operational equipment and soil formation, is imperative to success.
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