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IADC Code Calculator
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Bit Description:
IADC: 111 - Steel tooth standard open bearing roller bit for soft formations with low compressive strength and high drillability.
Compressive Strength:
0 - 35 MPA
0 - 3,000 PSI
Ground Description:
Very soft, unstratified, poorly compacted rocks such as poorly compacted clays and sandstones, marl limestones, salts, gypsum, and hard coals.
Based on the IADC Bit Classification System located in the IADC Drilling Manual, 11th Ed. - Redesigned, 2007
Compressive Strength Calculator
Enter the Compressive Strength
0 to 3,000 psi / 0 to 35 MPa
Compressive Strength:
0 to 3,000 psi / 0 to 35 MPa
Bit IADC Code Recommendation:
111 to 112
115 to 215
117 to 217
Bit Description:
A Steel Tooth Bit for Soft Formations.
Ground Description:
Very soft, unstratified, poorly compacted rocks such as poorly compacted clays and sandstones, marl limestones, salts, gypsum, and hard coals.
Disclaimer: this is a guide only