| 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. Drill operators often initiate the process by creating a smaller pilot hole, which is then expanded using a hole opener. This is an established drilling method employed particularly when the drilling equipment has lower power or when the final borehole is quite large.
This technique is an integral part of conventional drilling technology, especially in cases where the drilling machine's power is limited or the target end-hole exhibits substantial dimensions.
2. We offer custom-engineered hole openers and solutions tailored to match the rock hardness, drilling depth,
pilot hole dimensions, and final bore sizes, ensuring precision and efficiency.
3. By incorporating tricone bits as pilot bits, the hole opener transforms into a rock bit. This assembly is ideal for specialized well drilling, particularly when unique size specifications are required.
The combination of tricone pilot bits with hole openers is frequently used in drilling scenarios demanding specific size adaptations.
4. The reamer predominantly features a configuration of four or more cones.
5. Its cutting architecture is fortified with premium tungsten carbide hard facing or high-grade tungsten carbide inserts,
crafted with advanced formulas and techniques to significantly enhance the reamer's wear-resistance capabilities.
6. The pilot component employed is a tricone bit, known for its robustness and adaptability.
7. Seal and lubrication: Equipped with high-performance HNBR O-ring seals for secure bearing protection and enhanced lubrication with advanced grease,
8. Product Applications: Ideally suited for large-scale well, mining, and infrastructure projects, ensuring superior performance across diverse applications.
9: Recommended Drilling Parameters: It's crucial to note that the size and number of cones are customized based on
individual customer requirements, ensuring tailored solutions.
2. Advantages of Hole Opener Bits
Directional crossing operations are extensively employed in unexcavated projects. These involve three key phases:
1. Oriented hole drilling; 2. Hole opening; 3. Pipe pulling.
The hole opening phase is notably the most challenging aspect of this operation, where the choice of hole opener is crucial,
determined by the specific operational equipment and geological formation.
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