Forged assembly hole opener bit for water well drilling
Introduction:
Large-diameter assembled drill bits are widely used in
construction, bridge, highway and railway construction. This series
of drill bits are suitable for shale, limestone, cobblestone,
dolomite, conglomerate and other formations.
1. Suitable for medium to medium hard formations with high fracture
resistance
(Hard shale, sandstone, etc.)
2. The drill bearing is a non-sealed roller bearing.
3. The tip of the palm is welded with hard surface, and the carbide
blade is protected by the gauge
Is pressed into the head OD.
4. The surface of the cone gauge is reinforced with cemented
carbide press blocks.
Product Description:
1. Cutting structure
In view of the different characteristics of the cutting action of
the blades in different areas on the cone, the tapered blades are
placed in the permanent contact area, and the wedge-shaped blades
are placed in the alternating contact area, which greatly improves
the drilling efficiency. By arranging a diamond blade in the
permanent contact area of the cone where the blade is severely
worn, the wear resistance of the cutting structure is enhanced. The
tungsten carbide blade is placed on the top surface of the cone to
protect the cone from abrasion.
2. Instrument structure
The drill bit adopts active cutting volume protection insert, which
has good gauge protection and drilling ability.
3. Bearing structure
High-precision journal bearings. The ball locks the cone. Hardface
hears the bearing surface. The tapered bearing is inlaid with
anti-friction alloy. Improve the wear resistance and seizure
resistance of the bearing. Compared with the tri-cone bit, the
outrigger bearing is larger, so higher WOB and higher reliability
can be obtained.
4. Hydraulic design
The small-angle waterway design increases the thickness of the tip
of the palm and effectively prevents the waterway from scouring.
Optimize the hydraulic structure, improve the cleaning ability, and
increase the speed of penetration.
Product parameters:
| Product name | HDD hole opener |
| Usage | horizontal directional drilling |
| Application formation | medium hard with relatively higher compressive strength and hard
stringers, such as hard shale, sandstone and limestone, etc. |
| Weight | 200kg-400kg |
| MOQ | 1 |
Reamer Size | Cone size and # of Cones | Threads |
| Cone size | #of Cones | Cone size | # of Cones |
| 10“ | 6 1/2” | 3 | | | NC23 NC26(2 3/8IF) D50 D80 NC31(2 7/8IF) NC38(3 1/2IF) |
| 12“ | 8 1/2” | 3 | | |
| 16“ |
8 1/2”or 9 1/2” | 4 | | | For 8 1/2”-9 1/2” Cone: NC23 NC26(2 3/8”IF) D50 D80 NC31(2 7/8”IF) NC38(3 1/2”IF)
For 12 1/4”-13 5/8” Cone: 4”IF 4 1/2IF 5 1/2FH 6 5/8FH |
| 18”-20“ | 5 | 12 1/4” | 4 |
| 22”-24“ | 6 |
12 1/4” or 13 5/8” | 5 |
| 28”-30” | 7 | 6 |
| 32”-34” | 8 | 7 |
| 36“-38” | 9 | 8 |
| 40“-42” | 10 | 9 |
| 44“-46” | 11 | 10 |
| 48”-50” | 12-13 | 11 |
Pic Show
FAQ
Q: How to order the products?
A: Order directly!
Q: How to control the quality?
A: We should be checking & testing everyone drill bit before
shipment.
Q: Do you agree sample order?
A: Yes, we are welcome your sample order to testing our quality.
Q: Can we select the color of the drill bit?
A: Yes, we have the color of bule, golden, silvery for your choose.
If you need, we can make the drill bit color based on yours.
Q: Do you have after-sale service and warranty service?
A: Any quality or quantity problem once confirmed, we will be
compensate you the same. Any question or problem we will be reply
you within 24 hours.
