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.

 

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

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

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

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

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

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

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