Used pdc drill bit some IADC code for reference: 437 Soft Formation TCI Tricone Bits The 427 tci bits are used to drill low compressive strength,very soft formations .TCI bits maximize the use of bothconical and chisel tungsten carbide inserts of large diameters and high projection.This cutting sstructure design,combined Show More...
Used pdc drill bit some IADC code for reference: 437 Soft Formation TCI Tricone Bits The 427 tci bits are used to drill low compressive strength,very soft formations .TCI bits maximize the use of bothconical and chisel tungsten carbide inserts of large diameters and high projection.This cutting sstructure design,combined with maximum cone offset,results in high bit penetration rates .The deep intermesh of cutter rows prevents bit bailing in sticky formations. 517 Medium Formation TCI Tricone bits The 517features aggressive chisel tungsten carbide inserts on the heel rows and inner rows.This desing provides a fast drilling rate and added cutting structure durability in medium-to medium hard formations .The HSN rubber o-ring provides adequate sealing for bearing durability. 637 Hard Formation TCI Tricone Bits The 637bits can be used to drill hard and abrasive formations .Wearresistant tungsten carbide inserts are used in the outer rows to prevent loss of bit gauge.Maximum of bemisricalshaped inserts are used in all rows to provide cutter durability and long life. 617 Medium-Hard Formation TCI Tricone Bits The 617features robust chisel tungsten carbide inserts on the heel row and conical on the inner rows.This design provides a fast drilling rate and added sutti8ng structure durability in medium to medium hard formations .The HSN rubber o-ring [rovodes adequate sea;omg fpr bearomg dirability. Steel tooth bits series 114-117 Soft Formation Tooth Bits The 114-117 bits are used to drill low compressive strength,soft formations .Long projection tooth lengths are used on high offset cones to provide thegreatest penetration rates possible.Wear-resistant hard facing is used to control tooth wear.Onthe softest bit ty0pes this hard facing completely covers the bit teeth. 127 Medium-Hard Formation Tooth Bits The 127bits are used to drill high-compressive strength,medium hard formations .Short projection teeth with reduced crest length are used in this series of bit designs .Durable hard facing is applied to reduce tooth wear
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