20 inch Steel Teeth Water Well Drilling Tricone Drill Bit
Tricone bit Ø500 mm (20''), stell teeth -well drilling, soft and
medium hard rock
Tricone bit Ø400 mm (15 1/2''), stell teeth -well drilling, soft
and medium hard rock
Tricone bit Ø350 mm, (13 3/4''), stell teeth -well drilling, soft
and medium hard rock
Tricone bit Ø300 mm, (11 5/8''), stell teeth -well drilling, soft
and medium hard rock
Tricone bit diameter 500 mm 20 inch, Steel Teeth Water Well
Drilling for Soft and Medium Hard Rock Formation
Manufactured with superior quality steel, advanced technologies,
designed for use with compressed air or fluid circulation systems.
Regular and Jet circulation available.
Cutting structures allow optimum penetration rates and long runs
even in the most difficult and abrasive formations.
Weight on the bit is distributed through a five part anti-friction
bearing matched and ground with precision to tolerances of ±
0,0002".
Critical areas on the external portion of the bit are protected
with tunsten carbide alloy hardfacing.
Available for rock formation:
1. Soft
2. Medium - Soft
3. Medium - Hard
4. Hard formations
Tricone Bits Applications for Different Rock Formations:
| IADC | WOB | RPM | Applications |
| (KN/mm) | (r/min) |
| 111/114/115 | 0.3-0.75 | 200-80 | very soft formations with low compressive strength and high drill
ability, like clay, mudstone, chalk |
| 116/117 | 0.35-0.8 | 150-80 | very soft formations with low compressive strength and high drill
ability, like clay, mudstone, chalk |
| 121 | 0.3-0.85 | 200-80 | soft formations with low compressive strength and high drill
ability, like mudstone, gypsum, salt, soft limestone |
| 124/125 | 180-60 |
| 131 | 0.3-0.95 | 180-80 | soft to medium formations with low compressive strength, like
medium, soft shake, medium soft limestone, medium soft sandstone,
medium formation with harder and abrasive interbeds |
| 136/137 | 0.35-1.0 | 120-60 |
| 211/241 | 0.3-0.95 | 180-80 | medium formations with high compressive strength, like medium, soft
shake, hard gypsum, medium soft limestone, medium soft sandstone,
soft formation with harder interbeds. |
| 216/217 | 0.4-1.0 | 100-60 |
| 246/247 | 0.4-1.0 | 80-50 | medium hard formation with high compressive strength, like hard
shale, limestone, sandstone, dolomite |
| 321 | 0.4-1.0 | 150-70 | medium abrasive formations, like abrasive shale, limestone,
sandstone, dolomite, hard gypsum, marble |
| 324 | 0.4-1.0 | 120-50 |
| 437/447/435 | 0.35-0.9 | 240-70 | very soft formations with low compressive strength and high drill
ability, like clay, mudstone, chalk, gypsum, salt, soft limestone |
| 517/527/515 | 0.35-1.0 | 220-60 | soft formations with low compressive strength and high drill
ability, like mudstone, gypsum, salt, soft limestone |
| 537/547/535 | 0.45-1.0 | 220-50 | soft to medium formations with low compressive strength, like
medium, soft shake, medium soft limestone, medium soft sandstone,
medium formation with harder and abrasive interbeds |
| 617/615 | 0.45-1.1 | 200-50 | medium hard formation with high compressive strength, like hard
shale, limestone, sandstone, dolomite |
| 637/635 | 0.5-1.1 | 180-40 | hard formation with high compressive strength, like limestone,
sandstone, dolomite, hard gypsum, marble |
| Note: Above limitts of WOB and RPM should not be used
simultaneously |
| PIN SIZE |
| Bit Diameter | API PIN |
| (inch) | (mm) |
| 3 7/8"~5 1/4" | 98~134 | 2 3/8", 2 7/8" |
| 5 5/8"~6 3/4" | 143~171 | 3 1/2" |
| 7 1/2"~9 1/2" | 190.5~241 | 4 1/2" |
| 9 5/8"~13 3/4" | 245~350 | 6 5/8" |
| 14 5/8"~26" | 371~660.4 | 7 5/8" |
For more information, please contact:
Skype: ROSCHEN.TOOL , ROSCHEN_GROUP
WeChat: +86-137 6419 5009 ; +86-135 8585 5390
WhatsApp: +86-137 6419 5009 ; +86-135 8585 5390
Email: roschen@roschen.com ; roschen@roschen.net
Website: http://www.roschen.com ; http://www.roschen.net
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