MD Series
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Drilling Operations |
Description | ||
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The Motor Drive series are high-speed drill bits used for downhole power drilling tools. These bits integrate advanced cutting structures and gauge protection technology, reliable bearing system, and a hydraulic structure designed for greater efficiency in high speed drilling applications. The combination of these advanced designs decreases the common problems of conventional bits in directional and horizontal drilling, such as cone shell erosion, premature bearing failure, and low ROP. MD series bits are the ideal choice for directional, horizontal, and high temperature drilling. Bearing System: Adopting the Floating Bearing Structure. The floating bearing design reduces the relative linear speed of the bearing couple and decreases temperature rise on friction surfaces. The floating elements are made of highly elastic materials with high temperature and abrasion resistance. This design increases bearing life and reliability in high WOB or high RPM applications. Implementing the Metal Face Seal (MFS). High precision metal rings are used to form the bearing axial dynamic seal. Two elastic rubber energizers are separately located in the head and cone sealing areas to form a static seal. Cutting Structure: Secondary Cutter Technology. Secondary cutter technology is the addition of a secondary row of cutters between primary rows of cutters, forming a special cutting structure with twin bottom hole break lines. This design significantly reduces cone shell erosion in directional and horizontal applications. Compact Technology. By examining the protrusion, tungsten grade, and overall shape of the compacts, the JZ engineers have designed the MD Series Bits with compacts that are optimal for high ROP in soft to medium hard formations. This design also effectively prevents cutter breakage in transitional zones. |
Product Properties
Bit Type
Reduction in Friction Force
%
Increase in Working Life
%
Gauge Protection
Packaging
Pricing
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Documents
Product Champions
General Info
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Product |
Published | ||
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Jun 24, 2021 |
Last Edited | ||
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Jun 24, 2021 |
Categories | ||
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Drill Bits |
