API Roller Cone Bit Tricone Carbide Rock Drill Bits for Hard Rock

• Customization: Available
• Customized: Customized
• Standard: API
• Type: Center Drill Bit
• Material: Tungsten Carbide
• Usage: Well Drilling
• Size: 6 3/4in,7in
• Connection Thread: API Reg Pin
• IADC: 417/427/437/537/617/627
• Style: Tricone Bit
• Formation: Soft to Medium Hard Rock Formation
• Product Name: Drilling Bit
• Transport Package: Container
• Specification: 149.225mm 152.4mm 165.1mm 171.45mm
• Trademark: YCPT
• Origin: China
• HS Code: 84314310
• Production Capacity: 500 Sets Per Month

Product Description

API Roller Cone Bit Tricone Carbide Rock Drill Bits For Hard Rock
 

 

Product Description

Roller Cone Bits have conical cutters or cones with steel tooth or tungsten carbide buttons around them.As the drill string is rotated,the bit cones roll along the bottom of the borehole in a circular motion.As they roll,new teeth come in contact with the bottom of the hole,chipping the formation below and around the bit tooth.Air or drilling fluid life the crushed rock chips from the bottom of the hole and up the annulus. As rotation continues,another tooth makes contact with the bottom of the hole and creates new rock chips,thus,the process is continuous.Premium tungsten carbide insert (TCI) bits and milled tooth (MT) bits are needed to be designed to withstand high temperatures and endure long running times while drilling through soft to ultra hard formations.

Tricone Drill Bit is an ideal solution from soft to hard rock formations, it is connected with the drill stem and rotates along with it, and drive cones to pressed on the rock. Each cone rotates round the axis of its leg and three cones simultaneously revolve around the bit center. The tungsten carbide inserts on the cone shell cause the formation to spall under the weight on bit and the impact load of cone rotating, the debris will be discharged out to hole by compression air. Tricone bits come in several different varieties, and can deal with a wide range of different rock formations. It is important to know the type of formation you are drilling in when selecting a drill bit.The medium formation TCI tricone bits features aggressive chisel tungsten carbide inserts on the heel rows and inner rows. This design provides a fast drilling rate and added cutting structure durability in medium to medium hard for mations. The HSN rubber O-ring provides adequate sealing for bearing durability

 

IADC	Rock formation	WOB (KN/mm)	PRM(r/min)
417/427/437	Low compressive strength, high drill-ability and extremely soft formation, like shale, clay, sandstone, conglomerate etc	0.35~0.90	140~70
447	Low compressive strength, high drill-ability and soft formation, like shale, clay, sandstone, soft limestone, salt rock, plaster etc.	0.35~1.00	140~60
517	Low compressive strength, high drill-ability and soft formation, like shale, clay, sandstone, soft limestone, salt rock, etc	0.35~1.05	120~50
527	Soft formation with low compressive, like Low compressive strength, high drill-ability and soft formation, like shale, clay, sandstone, soft limestone, salt rock, anhydrite etc.	0.35~1.05	120~50
537/547	Low compressive strength, medium hard formation with hard abrasive interlayer, like Hard shale, anhydrite, soft limestone, sandstone, dolomite with mezzanine, etc.	0.50~1.05	110~40
617/627	High compressive strength, medium hard and thick hard interlayer, like hard shale, limestone, sandstone, dolomite, etc.	0.50~1.05	80~40
637/737	High compressive strength, medium hard and high abrasive formation, like limestone, dolomite, sandstone, chert, etc.	0.7~1.20	70~40

 

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Basical Specification
name	PDC drill bits for oil water well drilling
diameter	81/2inch
blade number	5
body type	steel body
No.of Nozzles	5
primary cutter size	1608
connection thread	41/2" API Reg pin
Operating parameter
RPM(r/m)	60~300
WOB(KN/mm)	5~25
Formation	soft to medium hard rock formation

Company Profile

We shandong yacheng petroleum technology are established in 2003 year, located in Dongying city, shengli oilfield,which is  second largest oilfield of China. 
Our business scope includes oilfield equipment supply, such as, drilling equipment and spares, wellhead equipment ,oil recovery equipment. 
We have been served  Shengli oilfield in the last 19 years, established a solid partnership and network with quality OEM factories. 
Based on our responsive and responsible  engineering & commercial team, we can provide one-stop shop service to our customer, and package plan of procurement which brings added value in terms of delivery time, fair prices, inventory in stock. 
We are Looking forward to build up partnership with your company and provide our attentive service to you.
 

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Packaging & Shipping

 

 

 

FAQ

 

1) About Packing Inner packing: white box, color boxes (upon request), Outer packing: cartons or pallets
2) Terms of payment: We accept T/T,L/C
3)Terms of Shipment: About 30 days after receiving the advance payment,or according to both parties agreement
4)Ports of shipment: Tianjin,Qingdao, shanghai or other required Port, by sea or air
5)Guarantee: One year since delivery.
6)Inspection: 100% testing before delivery.