8 1/2 inch PDC bit
|Bit diameter||8 1/2"|
|Number of Blades||6",5 blades;8 1/2",6 blades|
|Thread Connection||4 1/2 API REG PIN|
|Primary Cutters and Secondary Cutters Number||16mm*24pcs;13mm*40pcs|
|Gauge Cutters Number||13mm*32pcs|
|Gauge Protection Cutters Number||13mm*28pcs|
|Back Reaming Cutters Number||---|
|Gauge Protection Materials||Tungsten Carbide,PDC cutter|
|Gauge Protection Type||Normal|
|Length of Gauge Protection||---|
|Number of Nozzle||8 1/2" - 6 pcs;6" - 5pcs|
|Total Flow Area(TFA)||---|
|Junk Slot Area||---|
|Production Standard||API Spec 7-1|
Polycrystalline diamond compact (PDC) bits deliver premium performance and durability for a wide range of standard drilling applications. These matrix- and steel-bodied bits incorporate the latest cutter technology, computational fluid dynamics (CFD), enhanced hydraulics, and various structure geometries to maximize ROP.
Matrix-body PDC bits are commonly preferred over steel-body bits for environments in which body erosion is likely to cause a bit to fail. For diamond-impregnated bits, only matrix-body construction can be used.
** Steel-body bits
The strength and ductility of steel give steel-bit bodies high resistance to impact loading. Steel bodies are considerably stronger than matrix bodies.A beneficial feature of steel bits is that they can easily be rebuilt a number of times because worn or damaged cutters can be replaced rather easily. This is a particular advantage for operators in low-cost drilling environments.