| Customization: | Available |
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| 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 typically begin by creating a smaller pilot hole, subsequently expanding it with a hole opener. This method is a recognized and widely-used drilling technology, particularly when the drilling machine operates at lower power or when the final hole dimensions are significantly large.
2. Our expertise allows us to custom-manufacture hole openers and solutions tailored to the specific rock hardness, desired drilling depths,
and the dimensions of both the pilot and end-holes.
3. By integrating tricone bits as pilot bits, the hole opener transforms into a rock bit reamer, making it especially effective for drilling wells of unique sizes with enhanced performance.
4. Engineered with precision, the reamer's primary structure features four or more robust cones,
5. Each outfitted with a cutting-edge design that uses premium tungsten carbide hard-facing or high-grade tungsten carbide inserts,
utilizing advanced formulas and state-of-the-art techniques, significantly boosting the wear resistance and durability of the reamer for prolonged use.
6. The pilot component is comprised of a tricone bit,
7. Seal and lubrication systems are optimized with high-performance HNBR O-rings for superior bearing seals, while advanced greases provide exceptional lubrication properties.
8. Product applications: Perfectly suited for large-scale well drilling, mining, and critical infrastructure projects, where reliability and efficiency are paramount.
9. Recommended drilling parameters: Please note that the specific size and number of cones can be customized according to the precise requirements of each customer,
ensuring a tailored solution for every unique drilling challenge.
2. Advantages of hole opener bits
In the realm of directional crossing operations, which are pivotal in unexcavated projects, there are three indispensable steps:
1. Oriented hole operation; 2. Hole opening; 3. Pipe pulling.
The task of hole opening emerges as the most demanding part of this operation. However, the success of this critical phase hinges on selecting the right hole opener, meticulously chosen based on the operation equipment and geological formation.
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