1. Higher Average ROP
2. Greater Stability
3. Greater Durability
4. Ten years in PDC Bit field
5. API Approved
Port: Shenzhen
Minimum Order Quantity: 10 Unit/Units
Supply Ability: 1000 Unit/Units per Month
Payment Terms: T/T,Western Union
Contact Supplier
Packaging Detail: packed in carton
Delivery Detail: one week after payment
STAR DIAMOND Special Diamond Bits
HPC Core Bit
· Small or medium PDC cutter layout;
· Multiple blade profile design, available with round, double taper and parabolic profiles;
· Various ID flow path designs provide sufficient cooling and cleaning to whole bit surface;
· Applicable to coring in soft to medium hard formations;
Size | Type | TFA (in2) | Gauge Length (in) | Core Barrel. (in) | Hydraulic Flow Rate | Rotation Speed | Weight On Bit | ||
| 1/s | gpm | (r/min) | kn | klbs | |||||
5-7/8*2-5/8 | HPC6084 | 0.2-1.2 | 1-1/8 | 4-3/4*2-5/8 | 6.3-16 | 100~250 | 60~300 | 8.8~66 | 2~15 |
| HPC8132 | 0.2-1.2 | 1-1/2 | 4-3/4*2-5/8 | 6.3-16 | 100~250 | 60~300 | 8.8~66 | 2~15 | |
6*2-5/8 | HPC6084 | 0.2-1.2 | 1-1/8 | 4-3/4*2-5/8 | 6.3-16 | 100~250 | 60~300 | 8.8~66 | 2~15 |
| HPC8132 | 0.2-1.2 | 1-3/8 | 4-3/4*2-5/8 | 6.3-16 | 100~250 | 60~300 | 8.8~66 | 2~15 | |
8-3/8*4 | HPC8083 | 0.5-1.5 | 1-1/2 | 6-3/4*4 | 11-20 | 180~320 | 60~300 | 22~80 | 5~18 |
| HPC8133S | 0.5-1.5 | 2-1/8 | 6-3/4*4 | 11-20 | 180~320 | 60~300 | 22~80 | 5~18 | |
| HPC9132 | 0.6-1.5 | 1-3/4 | 6-3/4*4 | 11-20 | 180~320 | 60~300 | 22~80 | 5~18 | |
8-1/2*4 | HPC8083 | 0.6-1.5 | 1-1/2 | 6-3/4*4 | 11-20 | 180~320 | 60~300 | 22~80 | 5~18 |
| HPC1232 | 0.6-1.5 | 1-1/2 | 6-3/4*4 | 11-20 | 180~320 | 60~300 | 22~80 | 5~18 | |
Note: We can design and manufacture any types and sizes of PDC bits according to customer requirements.
Recommended Diamond Bit Operation Procedure
Preparation Before Drilling
l Inspect previous bit for body damage, lost cutters or inserts, etc. Make sure no hard objects exist at bottom hole such as teeth, tungsten carbide and steel pieces. Clean the bottom if necessary.
l Handle the bit with care. Place the bit on wooden pad or rubber mat. Do not set the bit directly on the steel floor.
Making Up the Bit
l Clean and grease the pin or box.
l Fit the breaker to the bit, lower the drill string to the pin and engage the threads.
l Locate the bit and breaker into the rotary bushing, and make-up to the recommended torque.
Tripping Down the Hole
l Remove the breaker and carefully lower the bit through the rotary table, BOPs and hangers.
l Pay attention to the presence and location of tight spots encountered when pulling the previous bit out of the hole. Trip bit slowly through tight spots, dog legs or ledges.
Bottom-Hole Patterning
l Lower bit to bottom at rated flow rate.
l Drill slowly using 10 to 20kn weight-on-bit and 60rpm to establish the bottom-hole pattern for at least one meter.
l Increase the weight at 10kn increments to determine optimum drilling weight-on-bit.
Drilling
l Reduce rotary speed when drilling through abrasive or hard sand mud-rock stringers to extend bit life.
l Adjust the rotary speed and weight-on-bit as formation changes or stringers are encountered to maintain optimum drilling performance.
l After making connections, note the following points
u Reset pump strokes and check standpipe pressure.
u Pump before bit approaches the bottom and lower bit to bottom slowly at 60rpm before drilling.
Model No.: 25mm-450mm
Features: 1.PDC mining bits drill fast;
2.Longer service life;
3.More than 25 years professional experiences;
4.Best price&quality.
Model No.: 42mm-450mm
Features: 1.Diamond drill bits is applicable for broken hard rocks;
2.Over 25 years expeiences;
3.High quality best price;
4.Sell well.
Model No.: 42mm-450mm
Features: 1.Diamond drill bits is applicable for broken hard rocks;
2.Over 25 years expeiences;
3.High quality best price;
4.Sell well.
Model No.: 75mm; 94mm; 113mm etc.
Features: 1.Drill bits applicable to drilling hard formation;
2.Drilling fast;
3.Good cost performance;
4.Over 25 years experience.
Model No.: 75mm; 94mm; 113mm ect.
Features: 1.Oil bits with arc design of petroleum drill bits;
2.Higher cost performance;
3.Over 25 years professional experiences..
Model No.: 25mm-450mm
Features: 1. This pdc mining drill bits can drill fast;
2. Longer service life;
3. More than 25 years professional experiences.
Model No.: 50mm; 65mm; 56mm; 65mm.
Features: 1. The 3 blades rock bits has long service life;
2. High efficiency;
3. Extra-large drainage hole;
4. 25 years experiences.
Model No.: 75mm~450mm
Features: 1.PDC drill bits suitable for drilling the large diameter hole;
2.High efficiency;
3.Over 25 years professional experiences.
Model No.: 75mm; 94mm; 113mm etc.
Features: 1.Rock bits has reinforced PDC blade;
2.Super anti-wear characteristic;
3.Ultra-durability;
4.Patented products;
5.25 years
Model No.: 25mm-450mm
Features: 1. PDC bits can drill fast;
2. Longer service life;
3. High efficiency;
4. More than 25 years professional experiences.
Model No.: all types
Features: diamond bit
1.nq diamond bit ISO
2.OEM nq diamond bit
3.pcd nq diamond bit
4.Best sale nq diamond bit
Model No.: GBIM
Features: Geological Impregnated Diamond Core Drilling Bits
good quality
low price long life