reamer bit/ hole opener
1. Pictures
2. Information
IADC CODE SELECTION | |||
IADC | WOB | RPM | Application |
(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 limits of WOB and RRPM should not be used simultaneously | |||
