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Drilling accessories
Threaded subs
F.G.S. Drill manufactures every kind of threaded subs, according to international standards or to customers’ drawing. These subs are made by 42CrMo4 quench and tempered steel, and are subjected to a nitriding process in order to reduce galling and extend their service life
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Bits for DTH hammers
F.G.S. Drill directly import from U.S.A. a complete dimensional range of bits for any kind of DTH hammer.
Typology |
Image |
Formation |
Perforation speed |
|---|---|---|---|
Drop Center |
 |
in inclination and fractured |
medium |
Convex |
 |
medium or medium hard |
excellent |
Flat |
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very hard |
fair |
Concave |
 |
all formation type |
normal |
Double Gage |
 |
very hard / hard |
excellent |
Drag Bits
Drag bits have a shearing action and cut rapidly in sands, clays and some soft rock formations.
Claw bit
Claw bits are used to drill chert, graved shales and generally all averagely consolidated formations.
Roller bits (tricones)
Roller bits have three or more cones ("rollers" or "cutters") made with hardened steel teeth or tungsten carbide inserts of varied shape, length and spacing. They are used as an all-purpose bit in every type of formation.
Fishing tools
Fishing tools are special mechanical devices used to aid the recovery of equipment lost downhole.
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