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Varel High Energy Series Bit 9 7/8 inch for Rigorous Conditions Hardness Rocks
Drill Bits
Varel High Energy Series Bit
Roschen provides only the best, newly manufactured rock bits
designed for the unique rigorous conditions of HDD. No re-tips or
re-circulated product, ever. Horizontal Technology uses the next
generation in bit performance - the Roschen High Energy (HE)
Series Bit. The HE Series bits are able to withstand applications
where the combination of bit weight and rotary speed is at the high
end of the spectrum, and by so doing, deliver better performance
and outcomes in critical application. HE Series bits are engineered
as a solution to increasing demands on drill bits which require
greater weight on bit (WOB) and higher rotations per minute (RPM)
for faster drilling.
. HET Inserts - Improving the attributes of TCI overcomes the
traditional trade-off between wear resistance and fracture
toughness of TCI components and actually makes TCI components both
harder and tougher.
. Mud Motor Hardfacing - For demanding motor applications, a
generous application of tungsten carbide hardfacing is applied to
the shirttail lower edge and leading edge of the bit leg to provide
enchanced seal protection.
. Leading Edge Shirttail Inserts - Tungsten carbide inserts are
placed along the leading edge of the shirttail providing additional
wear resistance in motor applications commanding high RPM or where
additional shirttail
protection is needed.
. Stabilization Inserts - Enchance standard shirttail patterns by
providing bit stabilization and additional protection to the
pressure compensator in high-angle applications or in
deviation-prone formations.
. V-Jet Hydraulics Nozzles - Aimed flow stream produces better cone
cleaning, which improves bit penetration
rates. V-Jets also maximize leg strength while minimizing overall
bit length, helping deliver more hydraulic
horsepower to the hole bottom. The shorter overall bit length
improves steerability on directional BHAs.
. Ball Retentation - Designed to retain the cone without carrying
bit weight. This design technique prevents ball race spalling
failures and extends bearing life.
. Thermally Stable Extreme Pressure (EP) Lubricant - Formaulated to
work synergistics with the bearing materials. The lubricant
maintains high relative viscosity even when the bearings are
subject to extreme energy levels in demanding applications.
. Hardmetal Inlays - Critical bearing surfaces are
presision-machined to provide superior bearing performance by
reducing friction and wear.
Precision, Silver-Plated Floating Elements - Reduce bearing heat
generation and prolong bearing life at higher
rotary speeds.
. HSN High Aspect Ratio Seal - Provides positive sealing against
contaminates with lower seal face contact stresses. This reduces
the seal operating temperature and extends seal life.
. Shale Diverting Inserts / Shale Groove - More effective in
diverting cutting away from seal, prolonging seal life.
. Stabilization Inserts - Enchance standard shirttail patterns by
providing bit stabilization and additional protection to the
pressure compensator in high-angle applications or in
deviation-prone formations.
CROSS REFERENCE CHART
IADC | Formation | Varel | Reed | Hughes | Smith | Security |
Code | Christensen | |||||
437 | Soft | V437 | HP43A | ATJ11 | F1 | S82F |
447 | Soft | V447 | HP51 | AT11C | --- | S82DF |
517 | Soft to Medium | V517 | HP51X | ATJ11H | F15 | --- |
517 | Soft to Medium | V517C | HP51A | ATJ22 | F2 | S84F |
527 | Medium | V527 | HP52 | AT22C | F27 | S85CF |
537 | Medium | V537 | HP53A | AT33 | F3 | S86F |
547 | Medium | ETD38 | HP54 | ATJ33C | F37 | S88CF |
547 | Medium | ETD38G | --- | ATJ35C | --- | --- |
617 | Medium to Hard | ETD44 | HP61A | ATJ44 | F4/F45 | M84F |
617 | Medium to Hard | V617 | --- | ATJ44A | --- | --- |
627 | Medium to Hard | ETD45 | HP62 | ATJ44C | F47 | M88 |
627 | Medium to Hard | V627 | HP62A | ATJ55R | F5 | M89FT |
627 | Medium to Hard | --- | HP62-JA | ATJ44A | F47 | M88 |
637 | Hard | ETD55 | HP63 | ATJ55 | F57 | M89F |
737 | Hard | ETD85 | HP73 | ATJ77 | F7 | H87F |
837 | Extremely Hard | ETD95 | HP83 | ATJ99 | F9 | H100F |
HDD BIT SPECIFICATIONS
Size Range | Milled Tooth | Tungsten Carbide | API Connection | Makeup Torque FT.-Lbs. | |||
Inches | Millimeters | Lbs. | Kg. | Lbs. | Kb | ||
4 1/2 | 114 | 9 | 4.1 | 11 | 5 | 2 3/8 REG | 3,000-3,500 |
4 3/4 | 121 | 14 | 6.4 | 16 | 7.3 | 2 7/8 REG | 6,000-7,000 |
6 1/8-6 1/2 | 143/165 | 27 | 12.3 | 35 | 15.9 | 3 1/2 REG | 7,000-9,000 |
7 7/8 | 200 | 74 | 32.7 | 82 | 36.3 | 4 1/2 REG | 12,000-16,000 |
8 1/2-8 3/4 | 216-229 | 78 | 35.4 | 90 | 40.8 | 4 1/2 REG | 12,000-16,000 |
9 7/8 | 251 | 135 | 61.2 | 150 | 68 | 6 5/8 REG | 28,000-32,000 |
10 5/8 | 270 | 160 | 72.6 | 180 | 81.6 | 6 5/8 REG | 28,000-32,000 |
12 1/4 | 311 | 210 | 95.3 | 235 | 106.6 | 6 5/8 REG | 28,000-32,000 |
ABOUT CARBIDE INSERTS
For more information, please contact:
ROSCHEN INC.
ROSCHEN GROUP LIMITED
ROSCHEN HOLDINGS LIMITED
Skype: ROSCHEN.TOOL , ROSCHEN_GROUP
WeChat: +86-137 6419 5009 ; +86-135 8585 5390
WhatsApp: +86-137 6419 5009 ; +86-135 8585 5390
Email: roschen@roschen.com ; roschen@roschen.net
Website: http://www.roschen.com ; http://www.roschen.net
http://www.roschen.cn ;