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BTKF series bit is a kind of high efficiency bit for vertical and directional drilling applications, especially suitable for drilling applications in relatively homogenous formation with good drillability. This bit is designed with floating bearing and rubber ‘O’ ring seal, and also utilizes optimized cutting structure and enhanced gage protection technology and therefore, it can achieve longer footage and higher ROP.The best rotary speed range for BTKF series bit is from 180 to 40 rpm, and the bit is the ideal choice for vertical drilling in upper sections, in directional and inclined section drilling.

Main structure features

This series bit adopt the bearing and seal system with the feature of low relative linear velocity of bearing couple and low temperature of  friction surface. Applying of  new type of synthetic grease enhance the  ability of resisting high temperaturewear and extreme pressure of bearing which can get longer service lift and higher reliability in vertical well and directional well.

Optimize  cutting  structure  of   insert bit, choose offset crested  scoop mpacts with strong attacking ability as main cutting compactsso as to make the bit with the feature of longer fooge and higher ROP.

Properly arrange compact on Head OD to enhance  the security of  bit in directional well. As well as improve the drilling  operation in  reducing well section or under the situation of up-reaming.