What Does Diamond Bit Mean?
A diamond bit is the part of the drilling equipment that cuts the core from the rock mass. The bit is the bottommost part of the core barrel assembly. Diamond bits can be either surface-set or impregnated. They are the most versatile bits, as they are capable of cutting high-quality cores from rock materials ranging from soft to extremely hard. They also allow for faster coring operations and exert less torsional stress on the core.
A diamond bit is also known as a diamond coring bit.
Trenchlesspedia Explains Diamond Bit
Diamond coring bits are expensive but are considered to be the best, as they have faster cutting rates and produce high-quality cores. Surface-set coring bits have diamonds mounted on the bit crown, which is fused to a steel shank. As the diamonds wear, increased thrust is required to maintain penetration rate.
Diamond-impregnated coring bits consist of synthetic diamonds distributed evenly throughout the bit crown. As the diamonds wear, new diamonds are exposed. Though this type is more consistent and has a faster penetration rate, higher RPM is required, and it is not suitable for rough conditions.
Since diamond coring bits have faster coring speeds and exert less torsional stress on the core, they can be used to retrieve longer cores and cores with smaller diameters.