Size Range: 2 7/8” - 10 5/8”

The T1-H is designed for hard, abrasive formations such as hard sandstone, limestone, dolomite and granite. The outer gauge rows have webs joining adjacent heel teeth, which are heavily applied with tungsten carbide hard-facing to provide maximum resistance to gauge wear.

COMPRESSIVE STRENGTHS: 8,000- 14,000 (psi)
ROTARY SPEEDS: 40 to 90 rpm
DRILLING WEIGHTS: 2,000 to 5,000 (lbs/inch of bit diameter)
IADC: 321 - 342

Formations such as hard sandstone, limestone and broken formations with hard streaks may require the T2. Short, closely spaced teeth applied with tungsten carbide hard-facing to help reduce vibration through harder formation.

COMPRESSIVE STRENGTHS: 4,000 -9,000 (psi)
ROTARY SPEEDS: 40 to 100 rpm
DRILLING WEIGHTS: 2,000 to 5,000 (lbs/inch of bit diameter)
IADC: 241 -312

The T3 performs well in unconsolidated shale, medium/soft limestone, medium sandstone and other formations of slightly higher compressive strength with intermittent hard streaks.

COMPRESSIVE STRENGTHS: 3,000 -6,000 (psi)
ROTARY SPEEDS: 50 to 100 rpm
DRILLING WEIGHTS: 1,000 to 4,000 (lbs/inch of bit diameter
IADC: 211 -232

The T4 is designed with high cone offset and longer, widely spaced teeth to provide maximum penetration in soft-medium formations such as shale, clay, soft sandstone, red beds and other soft formations with low compressive strengths.

COMPRESSIVE STRENGTHS: 1,000 - 5,000 (psi}
ROTARY SPEEDS: 60 to 110 rpm
DRILLING WEIGHTS: 1,000 to 3,000 (lbs/inch of bit diamete
IADC: 131 - 142