IADC: 116 117 126 127 136 137 216 217 226 226 316 317 326 327 336 337 115 125 135 215 225 235 315 325 335 114 124 214 314 111 121 131 346 347
size: from 3 3/4inch to 26 inch or more large
Application: petroleum&gas ,water well ,mining and tectonic industries ,oil field, construction, geothermal, oritented drilling, and other underground foundation work
Soft formation tooth bits:
The soft formations
tooth bits are used to drill low compressive strength, soft formations. Long projection tooth lengths are used on high offset cones to provide the greatest penetrations rates possible. Wear resistance hard facing is used to control tooth wear. On the softest bit types this hard facing completely covers the bit teeth.
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