The main structural features
1, the use of high strength and toughness carbide teeth, improve
the impact resistance of teeth to reduce the broken tooth rate;
2, Optimized design of the number of teeth, the number of teeth,
tooth height and unique alloy tooth profile, give full play to the
bit cutting ability and cutting speed;
3, the use of snap-lock locking cone, can withstand high-pressure
4, cone welding inlay reduction alloy, improve anti-bite bearing
5, the use of highly saturated nitrile rubber O-ring, the optimized
seal compression to improve the reliability of bearing seals;
6, the use of all-rubber reservoir can limit the pressure
differential and prevent the drilling fluid from entering the
lubrication system, providing a good lubrication for the bearing
system and ensuring the normal working of "O" ring seals and
increasing the working life of the drill bit;
7, the use of new low-wear grease, drill seal lubrication system to
improve the ability of high temperature.
· Please select the applicable formation and parameters according
to the instructions.
· Carefully check the bits appearance and to check the bits
threaded end face,whether the serial number on the box and
· Selection of WOB and RPM should be within the limits of the
recommended parameters, higher WOB and RPM cannot be used
· Bottom hole must be clean and bit must not be used for long
· Drilling process must operate smoothly, find that there is Bie
jump on abnormal phenomenon, should be timely analysis and take
· The bit should be kept indoor with dry and well ventilated
conditions at 10-33℃ and kept from sunshine and rain. Stored under
such conditions, quality of bit is guaranteed for 3 years.
|Bit Diameter||IADC||Applications||Special Features(Cutting Structure,Lug Protection)||Weight||PIN Conn||Operating Suggestions WOB/RPM|
|7 7/8” 200mm||412||Very soft formations with low compressive strengths and high
drillability.||Chisel on gage,conical on inner rows;Hardmetal on lug;Wear
resistant carbide on shirttail lip and lug.||75||34||4 1/2” API||7,880-15,750Ibs/120-90RPM|
1. Price commitment: in order to ensure the high reliability of
products, raw material selection are using grapefruit brand
products; under the same competitive conditions, and not to reduce
product technical performance on the basis of sincerity at a
favorable price to customers.
2. Quality commitment: product manufacturing and testing have
quality records and inspection data; the performance of the product
can withstand customer inspection.
3. Customer service: in order to create new diamond brand, enhance
the visibility of enterprises,establish corporate image, we serve
customers with the principle of "preferential prices, good service,
reliable product quality" principle.