Буровое долото API 8 1/2 PDC для бурения
- Категории: Mining Machine Parts >>>
- Поставщик: Hebei,Crossing,Drill,Bit,Manufacture,Co.,Ltd.
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Описание и отзывы
Характеристики
Product Description
| Basical Specification | |
| Size | 8 1/2 inch |
| IADC code | S423 |
| Thread | 4 1/2 inch |
| Type | steel body |
| No.of Nozzles | 3R+4F |
| Gauge Length | 2 1/2inch |
| blade | 7 |
| Operating parameter | |
| RPM(r/m) | 60~300 |
| WOB(KN/mm) | 5~25 |
| Formation | Medium hard:hard and dense formation with high comoressive strength and medium abrasiveness |
application
caution
- 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 4 years.
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