Surface Set Diamond Core Bit

Surface-Set Diamond Bits:
1: Surface-Set Diamond Bits are set with a singular layer of natural or synthetic diamond utilizing a hard matrix compound on the face of the bit. The diamond set design ensures sufficient overlap to prevent premature wear of the matrix.

2: 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.

Surface-set Bits Diamond Grades:
Diamond grade is the most important factor to take into consideration when selection a surface set diamond core bit, as it affects bit price and total meters drilled, and therefore obviously affects cost per meter drilled. Number of stones is also a very important factor orienting the bit selection too through determining how well a bit will cut. The natural diamonds utilizing for surface set diamond bits have been selected carefully, and precise pattern has also been used to set each diamond on bit cutting area to ensure proper overlap with a minimum of diamonds to keep the carat weight (the initial bit cost) as low as possible

Size: Our bits are available in all standard drilling size
Diamond Size: Our bits are available in stone-per-carat configurations range for SPC
Diamond Grade: Premium, Special, Select and Standard

Bit Crown Profiles: Semi-round profile, Multi-step profile, Semi-round face discharges, Step face discharges

Diamond Stone Size: Stones Per Carat (spc)

10/15 spc: Soft to Medium Formation

20/25 spc: Medium to Hard Formation

30/40 spc: Medium Hard to Hard Formation

40/60 spc: Hard Formation

60/80 spc: Hard to Very Hard Formation

Face Profile:

Semi Round: Standard profile. Very strong in hard broken formation.

Stepped: High penetration and stability but fragile in hard fractured formation.

Conical: Good penetration rate and stability. Stronger than stepped profile.

Pilot: Good core recovery in soft, friable formation especially when used with face discharge. Good stablisation but fragile nose.

Biconical: Only used on thick kerf core bits in soft unfractured formation.

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