Cautions
· 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
certificate.
· Selection of WOB and RPM should be within the limits of the
recommended parameters, higher WOB and RPM cannot be used
simultaneously.
· Bottom hole must be clean and bit must not be used for long
section reaming.
· Drilling process must operate smoothly, find that there is Bie
jump on abnormal phenomenon, should be timely analysis and take
effective measures
· 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.
Specifications
| Bit Diameter | IADC | Applications | Special Features(Cutting Structure,Lug Protection) | Weight | PIN Conn | Operating Suggestions WOB/RPM |
| Ibs | KG |
| 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 |
Feature Advantage
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.
