HF series bit for hard formation drilling

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

The size range of HF series bit is from 6 to 12 1/4 inch, and IADC varies from 537 to 737, For example:8 1/2 HF 637

 Keywords:

Long working life and high reliability are the significant features.

Cutter crest enhancement

Numerical experiment and optimized cutter

Material &shape ensure high efficiency of cutting,

Enhanced heel row and gage design

Super-hard material diamond-enhanced inserts.

Optional features:. D, G, ,H, K, L, X,Y,

D: Gage protection by diamond enhanced cutters on head O.D.:

The gage protection is significantly by adding diamond enhanced gage compacts on head OD. Bit with this feature is suitable for drilling ain directional and honrizontal well with high abrasive formation.

G:Head OD enhancement: Special insert are strategically arranged on head OD to reduce effectively wear of the head and improve bit’s gage protection in abrasive formation or directional wells.Improved protection can extend service life of the bit.

H: Gage protection by diamond enhanced cutters on cone:

Diamond compacts arranged in heel row or gage row for the cone can enhance gage protection and increase its working life. It is suitable for frilling in high abrasive formation, hard or extreme hard formations.

K: Cutting structure for hard plastic formation

Unique designing parameters and lengthen insert crest enlarge rock –breaking volume at the bottom hole and increase bottom hole coverage and increase ROP of the bit in hard plastic formations.

L: Head OD stabilization pad

Better protection of hit head and compensating hole can be achieved in directed and horizontal well drilling applications. There are two tyoes:1) bit head OD is reinforces with stabilization pad and compacts.

2) Spherical inserts are used in the lubrication reservoir closely.

X :Convex crested wedge inserts

Inserts of this shape have high cutting efficiency and anti-rock-breaking ability and can effectively increase bit’s ROP and working life. Bit with this feature is suitable for drilling medium soft to medium hard formations.

Y: Conical-spherical inserts

If bit is equipped with conical-spherical inserts as main cutting elements then the bit is suitable for drilling in hard and brittle formation.

If you are interested in our products, please contact us.

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Ivy Chen