Drill Bit Overall Structure

Overall structure:

The diamond material Drill Bit is an integrated drill bit. The whole Drill Bit has no moving parts. It mainly has bit body, crown, hydraulic structure (including water eye or nozzle, water tank is also known as a flow channel, chip flute), gauge and cutting edge (tooth). Five parts. The crown of the diamond drill bit is the working part of the bit cutting rock. The surface (working surface) is set with diamond material cutting teeth and is arranged with a hydraulic structure. The side is the gauge portion (inserted gauge teeth) and the bit body. Connected, made of tungsten carbide carcass or steel material. The bit body is a steel material body, the upper part is connected with the threaded rod and the drill string, and the lower part is connected with the crown carcass (the steel crown is integrated with the bit body).

The hydraulic structure of diamond material drill bits is divided into two categories. One type is used for natural Dth Drill Bits and TSP drill bits. The drilling fluid of such drills flows out from the central water hole, and is dispersed through the surface of the drill bit to the working surface of the drill bit to cool, clean and lubricate the cutting teeth, and finally carry the cuttings from the side sink and The flutes flow into the annular space. The other type is used for PDC drill bits. The drilling fluid of such drills flows out of the water eye and is dispersed through various diverting elements to the working face of the drill bit to cool, clean and lubricate the cutting teeth. 

The position and number of water eyes of the PDC Drill Bits depend on the structure of the drill bit.

The diameter-keeping part of the diamond material acts as a righting bit when drilling, and the diameter of the well is not reduced. The method of mounting the diamond on the side of the bit is used to achieve the purpose of maintaining the diameter.