Henan Wanke Diamond Tools Co.,Ltd products

Polycrystalline diamond compacts (PDC), which are composed of diamond and WC/Co substrate, and synthesized at the ultra-high pressure and high temperature conditions, are widely applied as the tooth of oil and gas drilling bit. The surface of the polycrystalline diamond compact (PDC cutter) is polycrystalline diamond sintered from powders of different diamond sizes, which has a high hardness, high wear resistance, great thermal stability, and a long working life. DIAMONDWK PDC cutters are widely used in oil and gas drilling.

China began to introduce PDC bits since the early 1980s. After the 1990s, major oil fields began to use PDC bits and achieved good results. Although PDC bits have many advantages and are widely used, the hydraulic problems of PDC bits are even more pronounced than other bits: On the one hand, PDC bits break the rock in a shear manner, and the drilling speed is fast. A large amount of cuttings needs to be removed in time; On the one hand, the temperature.

Another trend in the development of polycrystalline diamond petroleum composite drill bits is to study new types of high-performance polycrystalline diamond petroleum composite cutting teeth. The first is also to improve the wear resistance, mechanical properties, process performance, and cutting performance of the cutting element (polycrystalline diamond compact) itself. For many years, the diamond thickness of the polycrystalline diamond petroleum composite cutting teeth was limited to 0.6 mm (0.025 inch), because the researchers established the relationship between the cutting tooth residual stress and the diamond thickness.