| 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. Drillers begin by creating a smaller pilot hole, then expand it using a hole opener. This method is a standard drilling technique employed when the drilling machinery has limited power or when the final hole is exceptionally large.
of regular drilling technology when the drilling machine is lower power or the end-hole is too bit
2. We offer customized solutions, designing hole openers tailored to the rock hardness, desired drilling depth,
pilot hole dimensions, and end-hole size.
3. When tricone bits are used as pilot bits, the hole opener transforms into a rock bit opener. This approach is particularly suitable for specific size requirements in well drilling.
as pilot bits is always applicable in special sizes well drilling
4. The reamer is primarily composed of four or more robust cones.
5. The cutting structure incorporates premium tungsten carbide hard facing or high-grade tungsten carbide inserts,
of formulas and techniques to enhance the reamer's wear resistance capabilities.
6. The pilot bit is a tricone design.
7. Seal and lubrication include a high-performance HNBR O-ring for bearing protection and advanced grease to ensure smooth lubrication.
8. Product applications: Perfectly suited for large-scale well drilling, mining operations, and infrastructure development projects.
9: Recommended drilling parameters: Please be informed that the sizing and cone count are customizable to meet
customer-specific demands.
2. Advantages of hole opener bits
Directional crossing operation is extensively utilized in non-excavated projects. This process is segmented into three critical stages:
1, orientation of the initial hole; 2, hole opening; 3, pipe installation.
Hole opening is the most demanding step, and the key to success lies in selecting the correct hole opener,
which should be chosen based on the specific operational equipment and geological formation.
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