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Tornado water well bits are mainly used in drilling engineering of liquid circulation systems (such as water wells, coalbed methane, etc.). Tornado water well bits’ technology comes from the advanced oil roller bit manufacturer in the United States. Based on Shareate’s existing advantages in the design and manufacture of mining roller cone bits, Tornado is designed and manufactured in accordance with the standard of oil roller cone bits, which has a longer lifespan and higher drilling efficiency.
Tornado water well bits selection table
Bit Size | API Thread | Bit model | |
in | mm | in | |
4 1/2 | 114.3 | 2 3/8 | DHA117、DHA217、DHA517 |
5 1/4 | 133.4 | 3 1/2 | DHA517、DHA537 |
5 1/2 | 139.7 | 3 1/2 | DHA517、DHA537 |
6 | 152.4 | 3 1/2 | DHA517、DHA537、DHA617、DHA637、DHV517、DHV537、DHV617、DHV637 |
6 1/8 | 155.6 | 3 1/2 | DHA517、DHA537、DHV517、DHV537 |
6 1/4 | 158.8 | 3 1/2 | DHA517、DHA537、DHV517、DHV537 |
6 1/2 | 165.1 | 3 1/2 | DHA437、DHA517、DHA537、DHA617、DHA637、DHV517、DHV537、 DHV617、DHV637 |
6 3/4 | 171.5 | 3 1/2 | DHA517、DHA537、DHA617、DHA637、DHV517、DHV537 DHV617、DHV637 |
7 1/2 | 190.5 | 4 1/2 | DHV517、DHV537、DHV617 |
7 5/8 | 193.7 | 4 1/2 | DHV537、DHV617 |
7 7/8 | 200 | 4 1/2 | DHV417、DHV517、DHV527、DHV537、DHV617 |
8 1/2 | 215.9 | 4 1/2 | DHA137、DHA437、DHA517、DHA537、DHV137、DHV517、DHV537、DHV617、DHV637 |
8 3/4 | 222.3 | 4 1/2 | DHA447、DHV517、DHV537、DHV617 |
9 1/2 | 241.3 | 6 5/8 | DHA127、DHV127、DHV437、DHV517、DHV617、DHV637 |
9 5/8 | 244.5 | 6 5/8 | DHV547、DHV637 |
9 7/8 | 250.8 | 6 5/8 | DHV117、DHV437、DHV517、DHV537、DHV617、DHV637、SHJ617、SHJ637 |
10 5/8 | 269.9 | 6 5/8 | DHV117、DHV217、DHV517、DHV537、DHV617 |
11 5/8 | 295.3 | 6 5/8 | DHA117、DHA127、DHA517、DHA537、DHA617 |
12 1/4 | 311.2 | 6 5/8 | DHA117、DHA127、DHA437、DHA517、DHA537、DHA547、DHA617、DHA637 |
13 3/8 | 346.1 | 6 5/8 | SGA535、SGA545 |
14 3/4 | 374.7 | 7 5/8 | SGA615 |
17 1/2 | 444.5 | 7 5/8 | SGA535 |
Note: 1.Tricone bits can be designed and produced according to the customer's requirements if there is no bit model found in the above table.
Recommendations for tricone bit parameters
Bit Type | IADC | Recommend
parameter |
Apply formation | |
Pull down(KN/mm) | Rotation speed(r/min) | |||
Rubber seal | 117 | 0.35~0.90 | 150~80 | Extremely soft formations with low compressive strength and high drill ability, such as soft shale, clay, salt rock, etc. |
127 | 0.35~1.00 | 150~70 | Low compressive strength, high drill ability soft formation, such as shale, clay, salt rock, soft limestone, etc. | |
417 | 0.35~0.90 | 140~70 | Extremely soft formations with low compressive strength and high drill ability, such as shale, clay, sandstone, conglomerate, etc. | |
437 | 0.35~0.95 | 140~60 | Extremely soft formations with low compressive strength and high drill ability, such as shale, clay, sandstone, conglomerate, etc. | |
447 | 0.35~1.00 | 140~60 | Soft formations with low compressive strength and high drill ability, such as shale, clay, salt rock, sandstone, soft limestone, gypsum, etc. | |
517 | 0.35~1.05 | 120~50 | Soft formations with low compressive strength and high drill ability, such as shale, clay, sandstone, soft limestone, etc. | |
527 | 0.35~1.05 | 120~50 | Soft formations of compressive strength, such as shale, clay, sandstone, soft limestone, salt rock, anhydrite, etc. | |
537 | 0.35~1.05 | 110~40 | Compressive strength, medium soft, with hard abrasive inter layer, such as hard shale, anhydrite, soft limestone, sandstone, etc | |
547 | ||||
617 | 0.35~1.05 | 80~40 | High compressive strength, medium to hard, with thick hard inter calations, such as hard shale, limestone, dolomite, sandstone, etc. | |
627 | ||||
637 | 0.70~1.20 | 70~40 | High compressive strength, high abrasive and medium hard formations such as limestone, dolomite, sandstone, flint, etc. | |
647 |
Note: The recommended range of bit’s maximum pull down and rotation speed in the table cannot be used at the same time.
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