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[China]
Trade Verify
Address: Xuanchi Road,Industrial Development Zone,Xuanhua,Hebei,China P.C.:075100
Contact name:
Xuanhua Jinke Drilling Machinery Co.,Ltd. |
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Verified Suppliers
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Cutting Structure
The durability of premium tungsten carbide insert is improved with
new formulas and new techniques for insert bit.
Gauge Structure
Multiple gauge protection with gauge trimmers on the heel of cone,
tungsten carbide inserts and hardfacing on the shirttail increases
gauge holding capability and bearing life.
Bearing Structure
High precision bearing with two thrust faces. Ball lock the
cone.Hardfaced head bearing surface. Cone bearing inlaid with
friction-reducing alloy and then silver-plated. Abrasion resistance
and seizure resistance of the bearing are improved.
Seal and Lubrication
Premium O-ring, Optimal seal compression and curved seal structure
can enhance the seal performance. The pressure compensator system
and advanced grease can greatly increase the lubricating
reliability.
Product Application
It can receive high WOB in the conventional drilling. It is
suitable for various formations by matching cutting structure with
different tooth shape, tooth density and tooth exposure height.
Recommended Drilling Parameter
IADC | WOB (KN/mm) | RPM (r/min) | Applicable Formations |
417/437/ 447/415/435 | 0.35~0.9 | 150~70 | Very soft formations with low compressive strength and high drillability, such as clay, mudstone, chalk, gypsum, salt, soft limestone, etc. |
517/527/515 | 0.35~1.0 | 140~60 | Soft formations with low compressive strength and high drillability, such as mudstone, gypsum, salt, soft limestone, etc. |
537/547/535 | 0.45~1.0 | 120~50 | Soft to medium formations with low compressive strength, such as medium, soft shale, medium soft limestone, medium soft sandstone, medium formation with harder and abrasive interbeds, etc. |
617/615 | 0.45~1.1 | 90~50 | Medium hard formation with high compress strength, such as hard shale, limestone, sandstone, dolomite. etc |
637/635 | 0.5~1.2 | 80~40 | Hard formations with high compressive strength, such as sandstone, limestone, dolomite ,hard gypsum, marble, etc. |
Note: The upper limits of WOB and RPM in above table should not be used simultaneously.
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