| 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. In standard drilling operations, drillers typically initiate by creating a smaller pilot hole. Subsequently, they employ a hole opener to enlarge this initial hole. This technique is particularly essential when the drilling apparatus possesses lower power or when the final hole diameter is significantly large.
of regular drilling technology when the drilling machine is lower power or the end-hole is too bit
2. Customization is key with our hole openers, as we tailor both the tool and the accompanying solutions to effectively address varying rock hardness, desired drilling depths,
size of pilot hole, size of end-hole.
3. By equipping the hole opener with tricone bits as pilot bits, it transforms into an exceptional rock drilling tool. This configuration proves especially advantageous for specific well drilling dimensions,
as pilot bits is always applicable in special sizes well drilling
4. The structural design of the reamer predominantly comprises four or more robust cones,
5. Enriched with a cutting-edge configuration, our hole openers employ premium tungsten carbide hard facing or advanced tungsten carbide inserts. These sophisticated formulations
of formulas and and techniques markedly enhance the wear-resistance capability of the reamer, ensuring prolonged durability and performance.
6. The pilot bit typically used is the tricone bit, known for its efficiency and effectiveness.
7. Seal and lubrication: Employing high-performance HNBR O-rings ensures reliable bearing seals, while advanced grease formulations facilitate superior lubrication.
8. Product applications: Designed to excel in large-scale well projects, mining operations, and various infrastructure development applications.
9. Recommended drilling parameters: Please be advised that both the dimensions and the number of cones are meticulously configured to meet each customer's specific requirements.
customer's requirements.
2. Advantages of hole opener bits
Directional crossing operation is prevalently utilized in unexcavated projects, involving three pivotal stages: 1, oriented hole operation; 2, precise hole opening; 3, seamless pipe pulling.
1, oriented hole operation; 2, hole opening; 3, pipe pulling.
The hole opening phase stands as the most demanding segment in this operation. Yet, the triumph of hole opening heavily relies on choosing the appropriate hole opener,
selected according to the equipment and geological formation involved in the task.
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