Tungsten Carbide Insert Bits
Rotary drilling bits consist of three primary components; the cutters, internal bearings, and the bit body. The cutter teeth are of tungsten carbide insert design.
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Soft Formation S.E. 52
The S.E. 52 utilizes the largest chisel-shaped tungsten carbide
inserts with greater extension and spacing to perform best in
the softest formations. Maximum bearing offset and cutter angle
ensure the highest penetration rates and the most efficient
cuttings removal in a wide variety of soft unconsolidated
formations. Compressive Strengths – 2,000 to 8,000 PSI Operation Weights – 1,000 to 3,000 lbs. per inch of bit diameter Rotary speeds – 45 to 100 RPM Decreased Speed As Weight is Increased IDAC Code Range – 411-432 |
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Soft Formation S.E. 53
The S.E. 53 utilizes a high offset with features large
chisel-shaped tungsten carbide inserts to provide high
penetration rates in the softest formations. Wide insert spacing
allows effective hole cleaning in low compressive formations
such as shales, clays, limestone, and sand. Compressive Strengths – 2,000 to 10,000 PSI Operation Weights – 1,000 to 3,000 lbs. per inch of bit diameter Rotary speeds – 45 to 100 RPM Decreased Speed As Weight is Increased IDAC Code Range – 441-512 |
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Soft to Medium Formation S.E. 54
The S.E. 54 utilizes a high offset with features large
chisel-shaped tungsten carbide inserts to provide high
penetration rates in the softest formations. It is extremely
effective in shales, clays, soft to medium limestone, and other
formations of relatively low compressive strength with hard
streaks or abrasive qualities. Compressive Strengths – 5,000 to 12,000 PSI Operation Weights – 1,000 to 4,000 lbs. per inch of bit diameter Rotary speeds – 45 to 100 RPM Decreased Speed As Weight is Increased IDAC Code Range – 521-532 |
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Medium Formation S.E. 56
The S.E. 56 is adaptable to a wide variety of formations with
higher compressive strengths, and performs well in sandstones,
limestones, hard shales, and other formations with high abrasive
qualities, numerous hard streaks, and broken formations. Compressive Strengths – 7,000 to 15,000 PSI Operation Weights – 2,000 to 5,000 lbs. per inch of bit diameter Rotary speeds – 40 to 90 RPM Decreased Speed As Weight is Increased IDAC Code Range – 541-622 |
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Medium to Medium Hard Formations
S.E. 57 The S.E. 57 effectively combines chisel and
conical inserts to produce a design to drill slightly harder
formations such as hard limestone, dolomite, hard sands, and
other formations with hard cherty streaks. The arrangement of
the tungsten carbide inserts provides maximum durability,
reduces drill vibration, and allows greater drilling weights in
highly compressive strength formations. Compressive Strengths – 10,000 to 18,000 PSI Operation Weights – 3,000 to 6,000 lbs. per inch of bit diameter Rotary speeds – 40 to 90 RPM Decreased Speed As Weight is Increased IDAC Code Range – 631-712 |
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Medium to Medium Hard Formations
S.E. 58 For maximum penetration rates in harder
formations, the S.E. 58 utilizes breakage resistant, projectile
shaped tungsten carbide inserts. They are closely spaced for
maximum bottom hole cleaning in hard, abrasive, and homogeneous
limestones, dolomites, basalts, granite, and chert. Compressive Strengths – 12,000 to 20,000 PSI Operation Weights – 4,000 to 7,000 lbs. per inch of bit diameter Rotary speeds – 40 to 80 RPM Decreased Speed As Weight is Increased IDAC Code Range – 721-742 |
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Hard Formations S.E. 59
Extremely hard formations of the highest compressive strengths
require the S.E. 59. It performs best in formations such as
taconite, granite, chert, flint, and quartzite. The specially
shaped inserts combined with minimum cutter offset assure
maximum penetration and wear resistance. Compressive Strengths – 16,000+ PSI Operation Weights – 4,000 to 7,000 lbs. per inch of bit diameter Rotary speeds – 40 to 80 RPM Decreased Speed As Weight is Increased IDAC Code Range – 811-832 |
