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Petroleum exploration has been developed to deep formations gradually, in deep formations (compact plastic mudstone, lava and granite etc.), low ROP restrict the economic of development in deep well or super-deep well. Failure types, such as tooth break, tooth wear, cone tip wear and bit diameter shrink etc., usually appear when conventional cone bits drill in hard formations. So we have developed ATHF series bit for hard formations through analyze and research these failure types deeply and make use of advanced computer 3D simulation technology and experiments.

Result in site shows ATHF series bit has the advantages of long service life, high reliability, fast ROP and strong gage protection ability etc.. ATHF series bit is the ideal choice for drilling in hard formations and strong abrasive formations effectively and safely.


Failure typesuch as tooth breaktooth weacr one tip wear and bit diameter shrink eutsually appear when conventional cone bits drill in hard formations. 80 we have developed ATHF series bit lor hard lormations. ATHFseries bit has structure features of metal laωsealed and enhanωd head O.Ds.o that the bit is suitable lor drilling in hard formations.

ATHF series bit has the advantages of long service lifehigh reliabilityfast ROP and strong gage protection ability etc..

ATHF series bit is the ideal choice for drilling in hard formations and high abrasive formations effectively and safely.

The size range of HF series bit is 7 7/8 - 12 1/4 inch such as 8, 8 1/8, 8 3/8, 8 5/8, 8 7/8, , 9 1/2, 9 7/8, 10 5/8, 11, 11 5/8 and its IADC code  is 537 -737, such as 537, 547, 617, 627, 637, 647, 717, 727, 737.