T6 Surface Set Diamond Core Drill Bit BW NW HW PW

Casing shoes are used for drilling down or positioning the casing tubes in a borehole.

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

Wireline Series: B, N, H, P

W Series: RW, EW, AW, BW, NW, HW, PW, SW, UW, ZW, HWT, PWT, BWS, NWS

Metric Series: 46, 56, 66, 76, 86, 101, 116, 131, 146

X Series: RX, EX, AX, BX, NX, HX, PX, SX, UX, ZX

All Chinese Sizes

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Dimensions of Casing Shoes: