| 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 initially create a smaller hole and subsequently expand it using a hole opener. This method is a conventional approach in drilling technology, especially when dealing with machinery with lower power or when the target end-hole size is significantly large.
of regular drilling technology when the drilling machine is lower power or the end-hole is too bit
2. Our expertise allows us to tailor the hole opener and provide solutions that align with the specific hardness of the rock formations, desired drilling depths, size of the pilot hole,
size of pilot hole, size of end-hole
3. When tricone bits are used as pilot bits, the hole opener transforms into a rock bit. This combination of hole opener with tricone bits is excellently suited for drilling wells of special sizes.
as pilot bits is always applicable in special sizes well drilling
4. The reamer is ingeniously designed with four or more cones,
5. Featuring a cutting structure fortified with premium tungsten carbide hard facing or top-grade tungsten carbide inserts, utilizing intricate formulas and
of formulas and advanced techniques, which significantly boost the wear-resistant capabilities of the reamer.
6. The pilot component is a tricone bit,
7. Seal and lubrication: Equipped with a high-performance HNBR O-ring to ensure a robust bearing seal, complemented by advanced grease for optimal lubrication,
8. Product applications: Perfectly designed for large-size wells, mining operations, and a range of infrastructure applications,
9: Recommended drilling parameters. It is important to note that the size and number of cones can be customized according to
customer's requirements
2. Advantages of hole opener bits
Directional crossing operation is extensively utilized in unexcavated projects. The three pivotal steps in this process are:
1. Oriented hole operation; 2. Hole opening; 3. Pipe pulling.
Hole opening is the most demanding task in this operation. However, the key to successful hole opening is selecting the right hole opener,
chosen according to the operation equipment and geological formation.
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