| 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. Initially, drillers opt for a smaller hole, subsequently expanding it using a hole opener. This method is a standard
practice in drilling operations, particularly when the drilling machine has limited power or when the final hole size is substantial.
2. We offer customized hole openers and solutions tailored to the specific hardness of rocks, drilling depth,
and the size of the pilot hole, as well as the size of the end-hole.
3. When tricone bits are utilized as pilot bits, the hole opener transforms into a rock bit. This combination is
ideal for special-sized well drilling projects, ensuring compatibility and efficiency.
4. Our reamer is primarily composed of four or more cones,
5. Featuring a cutting structure reinforced with premium tungsten carbide hard facing or high-grade
tungsten carbide inserts, crafted with innovative formulas and techniques, enhancing the wear-resistant capabilities of the reamer.
6. The pilot consists of a tricone bit,
7. Seal and Lubrication: Utilizes a high-performance HNBR O-ring for bearing seal and sophisticated grease for optimal lubrication.
8. Product Applications: Perfectly suited for large-scale well drilling, mining, and various infrastructure applications.
9: Recommended Drilling Parameters: The size and quantity of cones are meticulously tailored to meet
the specific requirements of the customer.
2. Advantages of Hole Opener Bits
The directional crossing operation is a widely adopted technique in non-excavated projects. It consists of three primary stages:
1. Oriented Hole Creation; 2. Hole Opening; 3. Pipe Pulling.
The hole opening phase is the most demanding aspect of this process. However, the key to a successful operation lies in selecting the
appropriate hole opener, adapted to both the operational equipment and geological formations.
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