IADC WOB(kN/mm)(Bit dia) RPM(R/min) Applicable Fommations
111 0.3--0.75 200---80 Very soft formations with low compressive strength and high drillability .such as clay .mudstone ,chalk etc.
121 0.3--0.85 200---80 Soft formations with low compressive strength and high drillability,such as mudstone,gypsum,salt,soft shale,soft limestone,etc.
131 0.3--0.95 180---80 Soft to medium soft formations with low compressive strength and high drillability, such as medium soft shale,hard gypsum, medium soft limestone, medium soft sandstone, soft formation with harder interbeds ,etc.
211 0.35--0.95 180---80 Medium formations with high compressive strength ,such as medium foft shale, hard gypsum, medium soft limestone, medium soft sandstone, soft formation with harder interbeds,etc.
241 0.35--0.95 180---70 Medium hard formations with high compressive strength ,such as abrasive shale ,limestone, sandstone, dolomite, hard gypsum marble etc.
111 0.3--0.75 200---80 Very soft formations with low compressive strength and high drillability .such as clay .mudstone ,chalk etc.
121 0.3--0.85 200---80 Soft formations with low compressive strength and high drillability,such as mudstone,gypsum,salt,soft shale,soft limestone,etc.
131 0.3--0.95 180---80 Soft to medium soft formations with low compressive strength and high drillability, such as medium soft shale,hard gypsum, medium soft limestone, medium soft sandstone, soft formation with harder interbeds ,etc.
211 0.35--0.95 180---80 Medium formations with high compressive strength ,such as medium foft shale, hard gypsum, medium soft limestone, medium soft sandstone, soft formation with harder interbeds,etc.
241 0.35--0.95 180---70 Medium hard formations with high compressive strength ,such as abrasive shale ,limestone, sandstone, dolomite, hard gypsum marble etc.
Certificate
- API ISO9001
Main Products
PDC bits Matrix Body PDC bits, Tricone bits, Drag bits and so on