PDC Drill Bit development history presentation

From the mid-1970s, two well-known foreign manufacturers of drill bits, a US company Smith and Christensen betting company, PDC drill bit master's research work, the early 1980s put into industrial use.

China from the early 1980s began to understand that the introduction of a small amount of PDC drill bit 985 on trial, since 1986, the domestic introduction of PDC drill bit manufacturing technology and equipment. In 1988 the introduction of two production lines have been put into operation, while many other domestic manufacturers use domestic materials trial PDC drill bit. At that time, because of domestic PDC wear sheet is relatively low, overall performance PDC piece far and abroad, while imports PDC priced and very expensive, so PDC PDC drill bit body mainly with quality sheet steel to match the style. With the development of PDC chip synthesis technology, domestic chip PDC overall performance continues to improve, especially in recent years, the country has produced a jaw teeth and the ring gear of the composite sheet, wear ratio has reached more than four hundred thousand, the thermal stability of 850 degrees, engage in impact toughness reached single 60J, it is known as high hardness, high wear resistance quality, high impact toughness and high thermal stability of four high composite sheet PDC-made piece has approached or reached the level of imports PDC sheet, so the bit body formed matrix type, to further improve the overall performance of PDC bits. Development work carried out many domestic manufacturers have a variety of drill carcass type of PDC bits, PDC bits matrix type because of its excellent overall performance by up more users. In short, the current PDC bit varieties, materials, construction techniques and design methods, and many have undergone tremendous changes. Such drill was in petroleum, geology and other related engineering fields comrades have a very important position. Now the domestic production of PDC drill bit manufacturers have been dozens, the country steadily large oil field, coal field in adapting to the formation vigorously promote the use, and the amount of PDC bits in total drilling footage proportion increased year by year.

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