NQ3 HQ3 PQ3 Surface Set Diamond Bit for exploration diamond core
drilling samples
NQ HQ PQ Surface Set Diamond Bit for exploration diamond core
drilling samples
Surface Set Diamond Bit
Natural diamond surface set bits differ from impregnated bits, they
are only set with a single layer of natural or synthetic diamond
utilizing a hard matrix compound on the face of the bit. Its
waterways are usually shallower than an impregnated bit because of
the single layer of the diamonds. The diamond set design ensures
sufficient overlap to prevent premature wear of the matrix.
Category: Downhole Tools
Tags: Diamond Bit, Surface Set Diamond Bit, natural diamond core
bits, Surface Set natural Diamond Bi
Surface Set Diamond Bit
Surface-Set diamond bits are primarily recommended for use in
drilling relatively soft, abrasive, unconsolidated formations that
are not effectively drilled by impregnated diamond bits. They are
also recommended for use in drilling harder formations where the
available rotational speeds and bit loads are insufficient to use
impregnated diamond bits due to drilling equipment limitations.
Our company can manufacture a wide range of surface set bits, which
includes a variety of bit crowns,diamond grades and sizes, designed
to provide the biggest cutting efficiency in various rock
formations. Some bits are designed with face discharge holes to
minimize core wash
when drilling in soft and fractured formations.
Diamond size selection: The harder the rock is, the smaller the
diamonds we should use. The amount of diamonds is one of very
important factors to the bit cutting efficiency, Our engineers use
mathematical formulas to set each diamond on bit cutting area to
ensure proper overlap with a minimum of diamonds to keep the
initial bit cost as low as possible in a balance design.
| Wireline diamond core bits specifications |
| SIZE | CORE Ø | HOLE Ø |
| AQTK | 35.5 mm (1-3/8 in) | 48 mm (1-7/8 in) |
| BQ | 36.4 mm (1-7/16 in) | 60 mm (2-3/8 in) |
| BQTK | 40.7 mm (1-5/8 in) | 60 mm (2-3/8 in) |
| NQ | 47.6 mm (1-7/8 in) | 75.7 mm (3 in) |
| NQTK (NQ2") | 50.6 mm (2 in) | 75.7 mm (3 in) |
| NQ3 | 45 mm (1-3/8 in) | 75.7 mm (3 in) |
| HQ | 63.5 mm (2-1/2 in) | 96 mm (3-3/8 in) |
| HQ3 | 61.1 mm (2-3/8 in) | 96 mm (3-3/8 in) |
| PQ3 | 85 mm (3-3/8 in) | 122.6 mm (4-7/8 in) |
| PQ3 | 83 mm (3-1/4 in) | 122.6 mm (4-7/8 in) |
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