1、Double rows six blades limiting cutter in inner cone design, lessens bit torque and improves steerability in directional drilling.
2、Unique gauge with high quality PDC cutters, helps several-fold increasing wear resistance and stability of the bit.
3、The surface of the blade is welded by wear-resistant hardfacing material, improves wear resistance and erosion resistance of the bit.
Features:
1、Short parabolic configuration design, ensures optimal bottom hole flow pattern and anti-balling.
2、Optimize the cutting structure and places high quality cutters at different points, increases wear resistance and offensive of the bit .
3、Anti-whirl design improves ROP and enhances drilling stability.
Matters need attention for use of the tricone bit:
1. Before the bit goes down the well, it is necessary to confirm that the bottom hole is clean.
2. Check whether the thread connection and the nozzle installation are intact.
3.Drilling should be smooth and avoid excessive pressure and rough drilling.
4. The last single root shall start the rotary table with large displacement, and drill the hole to the bottom of the well to fully wash the well and prevent cuttings from blocking the nozzle.
5. When creating the shape of the bottom hole, the bottom hole should be touched steadily with low bit pressure, low rotation speed, large displacement, and low torque. The rotation speed should be 40-60r/min for at least 30 minutes.
6. The reasonable determination of bit weight and rotation speed should refer to the parameters recommended in the bit operating instructions and combine with the actual situation of the formation.
7. During drilling, the operation should be smooth and the drilling delivery should be even. It is strictly prohibited to lift and release sharply, slide and stop drilling.
8. If the drill bit has no footage, the pump pressure increases or decreases obviously, the mechanical drilling speed suddenly decreases, the torque increases and other phenomena, the drilling shall be pooh and checked.
Application: Suitable for medium hard formation with high compressive strength and abrasiveness, such as limestone, hard gypsum, dolomite and sandstone, etc.
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Bit
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SPECCIFICATIONS
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RECOMMENDED PARAMETERS
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Size
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Number of Blade
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Primary Cutter Size
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Nozzle Qty
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Gauge Length
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Connection
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Rotary Speed
(rpm)
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Weight On Bit
(KN)
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Flow Rate
(lps)
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8-1/2”
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6
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16.05mm
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8
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2’’~3.5’’
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4-1/2’’API REG
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60~250
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10~100
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25~36
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FAQ
1. Are you trading company or manufacturer ?
We are manufacturer.
2. Whether accept customized according to customers' requirements ?
Yes, We accept customized, no matter what size and type ,and MOQ is 1 piece .
3. About lead time and shipping time?
The lead time depend on quantity of order. Usually it will takes 3-5days shipping to Tianjin Port or Beijing Airport,China .Even the small order or urgent order we can send you by air after received your agreement. According the distance from china to your port, usually from China to European about 25-30 days. To West of American 20-25 days.
4. How do you guarantee your quality?
We select the advanced production technology and equipment, strictly control the whole production process,and we inspected the finished drill bits,we can also make several design changes according to the customer's feedback, and finally ensure the customer's excellent drilling effect.
5. Keywords of this product.
pdc bit for coal mine / steel pdc drill bit / pdc bits
