Page 58 - Diamond Products Catalog

PCD/TSD BITS
Polycrystalline Compact Diamond Bits (PCD)
Ideal for drilling in soft to medium sedimentary formations which are homogeneous and competent. The PCD cutters are available in several sizes and are located to yield maximum penetration rate and long life depending on
the application. The bits are constructed with a tough, wear-resistant matrix body and gauge reinforcement. As a result, worn cutters can be rotated or replaced allowing the continued use of the bit.
Thermally Stable Diamond Bits (TSD)
TSD cutters are smaller and generally more robust than PCD cutters. The inserts are set in a tough wear-resistant matrix body and feature broached gauge reinforcements. Cutters are placed to provide full coverage across the cutting face.
These bits are suitable for drilling soft to medium- hard formations depending on the power of the drill rig. The smaller, more robust cutters make this bit usable in rock types that are somewhat harder than those which can be drilled with PCD bits.
PCD/TSD NAMING CONVENTION
Finding the right bit is easy. The naming convention directly corresponds to the description of the bit in the list of part numbers.
HQ PCD8 R FD NND TP
1 2 34 5 6
1. Thread
Bits are available in all standard sizes B, N, H, and P.
2. Bit Type
Standard PCD and TSD bits are available with either 8mm (PCD8) or 13mm (PCD13) PCD cutters or TSD 6mm (TSD) cubes.
3. Gauge
4. Waterway Option
Where applicable, waterway options will be identified here.
5. No Natural Diamond (NND)
Where applicable, only synthetic diamonds are used throughout.
6. Threaded Ports (TP)
Where applicable, threaded ports are provided to control bypass flow.
Double angle (DA)
Face discharge (FD)
Deep ID (DD)
PCD/TSD
Standard gauge (S)
Equal to reaming shell gauge (R)
Oversized Outer Diameter (OS inches)
56
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