| 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 often commence with a smaller pilot hole, subsequently expanding it with a hole opener. This technique is a staple in regular drilling operations, particularly when utilizing drilling machines with lower power capability or when the final hole size is significantly larger.
of regular drilling technology when the drilling machine is lower power or the end-hole is too bit
2. We have the capability to customize hole openers and provide tailored solutions based on rock hardness, required drilling depth,
size of pilot hole, size of end-hole
3. When tricone bits are employed as pilot bits, the hole opener becomes a specialized rock bit suitable for unique well sizes. The integration of tricone bits enhances the adaptability of the hole opener for special size drilling requirements.
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 is enhanced with premium tungsten carbide hard facing or inserts, which are meticulously formulated to
of formulas and netechniques is utilized, and increases wear-resistant capability of reamer
6. The pilot is tricone bit
7. Seal and Lubrication: Our high-performance HNBR O-ring ensures superior bearing seal integrity, complemented by advanced grease to maintain optimal lubrication.
8. Product Applications: Ideally suited for large-scale wells, mining operations, and infrastructure projects, our solutions meet the demands of challenging environments.
9: Recommended drilling parameters are customizable. Please note, the size and number of cones are meticulously configured according to
customer's requirements
2. Advantages of Hole Opener Bits
In directional crossing operations widely utilized in trenchless projects, there are three critical stages:
1, Oriented Hole Operation; 2, Hole Opening; 3, Pipe Pulling.
The hole opening stage is notably demanding. However, the success of this phase hinges on selecting the appropriate hole opener, tailored precisely to the operational equipment and geological formation.
choosing according to the operation equipment and formation.
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