Milltooth Tri-cone Bits
- Our roller rock milltooth
tri-cone bits, manufacturered in Russia, are available in a variety
of sizes and types which are listed below. When ordering, be sure to specify either air
or liquid circulation. Bits for liquid circulation are furnished
unless otherwise specified.
- To help you to order the right bits, use the following guidelines to match the bit design to the formation you will be drilling.
- 1S -- Long, widely spaced teeth for softest formation (soft sediments, shales, clays, etc.)
- 1 -- Reduced spacing between teeth for shale, soft limestone, loosely cemented sandstone, etc.
- 2M -- More teeth and shorter teeth for hard shales, sandstones, limestones, etc.
- 3MT -- Short, closely spaced teeth for very hard rock (dolomite, limestone, very hard shales, etc.)
- 3T -- Similar to "3MT" but teeth have "T" shape for slightly more abrasive formations.
- 3H -- Features paired teeth on gage. High resistsance to abrasion from formations with high silica content.
BIT CODE FORMATION TYPE BIT DIAMETER - in. mm.
1S Very Soft 111
1 Soft 121
2M Medium 231
3MT Medium Hard 311
3T Hard 321
3H Very Hard 339
PIN SIZE
2 7/8 73.0 X X N 4 thd 2 15/16 74.6 X X 3 76.0 X 3 1/8 79.4 X 3 1/4 82.6 3 1/2 88.9 X 3 5/8 92.1 X X X 2 3/8 API Reg 3 3/4 95.3 X X 3 7/8 98.4 X X X X X 4 101.6 X X 4 1/4 108.0 X X 4 1/2 114.3 X 4 5/8 117.5 X X X 4 3/4 120.7 X X X X X 2 7/8 API Reg 4 7/8 123.8 X X X X X 5 127.0 X X X 5 1/8 130.2 X X X 5 1/4 133.4 X X X X 5 1/2 139.7 X X X X 5 5/8 142.9 X X X X 3 1/2 API Reg 5 3/4 146.0 X X X X 5 7/8 149.2 X X X X X 6 152.4 X X X X X 6 1/8 165.6 X X X X X X 6 1/4 158.8 X X X X X X 6 3/4 171.0 7 1/2 190.6 X X X X 7 7/8 200.0 X X X X X 4 1/2 API Reg 8 1/2 215.9 X X X X 8 3/4 222.3 X X X X X 9 228.6 X X X X X X 9 7/8 250.8 X X X X X X 6 5/8 API Reg 10 5/8 269.9 X X X 12 1/4 311.2 X X X X 13 3/4 349.3 X X X 17 1/2 444.5 X X 7 5/8 API Reg Sealed Journal Bits - Techline also offers a line of quality sealed journal bearing bits to meet the demands of the oil and gas industry.
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- IADC Code Number Designations
- The first digit designates bit type and hardness of formation to be drilled:
- (1-2-3 are the numbers to indicate milled tooth bits from softest to hardest formation type)
- The second digit is a subcategory for the formation to be drilled ranging from SOFTEST (1) to HARDEST (9)
- The third digit designates features of the bit:
- 1 = Standard Roller Bearing
- 2 = Roller Bearing Air Coiled
- 3 = Roller Bearing/Gage Protected
- 4 = Sealed Roller Bearing
- 5 = Sealed Roller Bearing/Gage Protected
- 6 = Sealed Friction Bearing
- 7 = Sealed Friction Bearing/Gage Protected
- 8 = Directional
- IADC Code Number Designations
3-CONE ROLLER ROCK BITS; MILLED TOOTH AND TUNGSTEN CARBIDE INSERT BIT CODE FORMATION TYPE BIT DIAMETER - in. mm.
IADC 115/116/117 126/136
IADC 214/215/ 236
IADC 312/314
IADC 417/433/ 435/437
IADC 515/517/527 533/525/537
IADC 625/627/ 637
IADC 737/745/ 747
4 3/4 120.7 X 5 5/8 142.9 X X X 5 3/4 146.1 X X 5 7/8 149.2 X X 6 152.4 X X 6 1/8 155.6 X 6 1/4 158.8 X X X 6 1/2 165.1 X X X 6 3/4 171.5 X X X 7 1/2 190.5 X X X X X X X 7 5/8 193.7 X X X X X 7 7/8 200.0 X X X X X 8 1/2 215.9 X X X X X X X 8 3/4 222.3 X X X X X X X 9 5/8 244.5 X X X X X X X 9 7/8 250.8 X X X X X X 10 5/8 269.9 X X X X X X X 11 279.4 X X X X X X 11 5/8 295.3 X X X X X X 12 1/4 311.2 X X X X X X 13 3/4 349.3 X X X X X X 14 3/4 374.7 X X X X X X 15 381.0 X X X X X X 15 1/2 393.7 X X X X 16 406.4 X X X X 17 1/2 444.5 X X X X X
call us at (406) 782-9604, send a fax to (406) 782-9605,
or send e-mail to us at techline@theglobal.net.
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