The PDC drill bit is a polycrystalline diamond composite drill bit developed with artificial polycrystalline diamond as the cutting tooth developed in the 1980s. It is widely used due to its remarkable high drilling efficiency and long service life. PDC drill bits, downhole motors, tests while drilling, and the use of computers in drilling are known as the four major drilling technologies of the 1980s. The role of drilling in oilfield development is very important. It is estimated that in some oilfield developments, drilling investment accounts for 35%-40%. With the continuous reduction of petroleum resources and the relatively tight world energy supply, this requires drilling companies to develop oil more economically and efficiently. Drill bits are an important tool in drilling operations, and their performance directly affects the quality, cost and efficiency of drilling operations. In the early 1980s, before the successful development of PDC in China, the Ф6X6mm polycrystal was used extensively for core drills for oil and gas drilling and full-scale drill bits for watermelon skin. Since the mass production of domestic PDC in the 1990s Polycrystalline synthetic diamond gradually withdrew from the drilling market and was completely replaced by PDC. 
Figure 1 PDC composite film In China, the development of PDC bit is affected by the localization of PDC. It is about 15 years later than the United States. In the mid-1980s, Jianghan Bit Factory, Dagang Switchboard Institute Drilling Institute and Beijing University of Petroleum, etc. The unit began to develop PDC drill bit. In 1985, Chuanshi-Christensen Diamond Drill Company and 1990 Xinjiang-Dihao Aisi Drill Bit Tool Co., Ltd. introduced foreign mature PDC bit technology and subsequent new technology, and adopted GE, DeBeers and USS's stable and reliable PDCs have excellent performance in 52 wells, paving the way for the development and application of PDC bits in China, showing the PDC bit in the oil and gas drilling market. The bright future. However, due to the high cost of the drill bit and the high price, its application is mainly promoted in the drilling of oilfields and offshore oilfields in Xinjiang. After the PDC, which was independently developed by Zhengzhou Sanmao in 1988, was put on the market, it accelerated the pace of localization of PDC bits in China. The Jianghan Drilling Plant Drilling Institute, Dagang Petroleum Switchboard Factory, Shengli Oilfield Drilling Institute, Daqing Petroleum A batch of PDC bit manufacturing plants such as the Drilling Plant of the Authority, and fully localized PDC bits have been promoted and popularized in Daqing Oilfield, Zhongyuan Oilfield, Dagang Oilfield, Shengli Oilfield, Liaohe Oilfield and Jilin Oilfield. 
Figure 2 PDC diamond drill bit due to the unsatisfactory performance of domestic PDC in the early 1990s and the relatively low design and manufacturing level of drill bits for some drill manufacturers, the drilling effect is not satisfactory until Zhengzhou Xinya Composite Superhard Material Co., Ltd. After putting into production, we are constantly researching and innovating in PDC manufacturing technology. The specifications of the products are consistent with those of foreign products. The quality and reliability of the products are improved, which basically meets the needs of domestic and foreign drill customers for drilling soft-medium hard formation drills. Technical requirements, the company is currently focused on the development of PDC suitable for difficult formations such as hard formations, interlayers, deep wells. In addition, in the manufacturing of drill bits, in addition to Chuanshi-Christensen Diamond Drill Company and Xinjiang Dixie Aes Bit Tool Company, a number of bit manufacturing companies with high quality levels have emerged: such as Chengdu Baishite Diamond Drill Company Wuhan Yisida Tools Co., Ltd., Chengdu Dip Diamond Drill Company and Sichuan Chuanshi Diamond Drill Company. 
Figure 3 China's first deepwater drilling platform At 9:38 am on May 9, 2012, China's first self-designed and constructed sixth-generation deepwater semi-submersible drilling platform "Offshore Oil 981" drill bit in the South China Sea Tsuen Wan 6-1 area The 1,500-meter-deep underwater exploration into the stratum marks a substantial step in the “deep water strategy†of China's offshore oil industry. In recent years, 50% of the major exploration discoveries in the world have come from the ocean, mainly in deep waters. Deep waters have become an important replacement area for oil and gas exploration and development in the world. China's South China Sea is rich in oil and gas resources. The total petroleum geological resources of the South China Sea Basin are between 23 billion and 30 billion tons. The total geological resources of natural gas is about 16 trillion cubic meters, accounting for one-third of China's total oil and gas resources. 70% of it is contained in the deep sea area of ​​1.537 million square kilometers. 
Figure 4: Drills with red silk cloth slowly descended After long-term independent innovation, China's oil drilling level has improved significantly. For example, CNOOC has created a single PDC bit (polycrystalline diamond composite bit) in the Liuhua 11-1 oilfield. Into the 4380 meters of offshore oil drilling records; in addition to the development of high temperature and high pressure anti-gas slurry cement slurry system, optimization of well network reservoir development technology, reservoir protection technology, offshore fracturing tools and equipment technology. 
Figure 5 China oil drilling speed change It is believed that in the near future, the use effect and application field of domestic PDC bits will rapidly improve with the improvement of PDC quality and the improvement of drill bit design and manufacturing level.
Figure 1 PDC composite film In China, the development of PDC bit is affected by the localization of PDC. It is about 15 years later than the United States. In the mid-1980s, Jianghan Bit Factory, Dagang Switchboard Institute Drilling Institute and Beijing University of Petroleum, etc. The unit began to develop PDC drill bit. In 1985, Chuanshi-Christensen Diamond Drill Company and 1990 Xinjiang-Dihao Aisi Drill Bit Tool Co., Ltd. introduced foreign mature PDC bit technology and subsequent new technology, and adopted GE, DeBeers and USS's stable and reliable PDCs have excellent performance in 52 wells, paving the way for the development and application of PDC bits in China, showing the PDC bit in the oil and gas drilling market. The bright future. However, due to the high cost of the drill bit and the high price, its application is mainly promoted in the drilling of oilfields and offshore oilfields in Xinjiang. After the PDC, which was independently developed by Zhengzhou Sanmao in 1988, was put on the market, it accelerated the pace of localization of PDC bits in China. The Jianghan Drilling Plant Drilling Institute, Dagang Petroleum Switchboard Factory, Shengli Oilfield Drilling Institute, Daqing Petroleum A batch of PDC bit manufacturing plants such as the Drilling Plant of the Authority, and fully localized PDC bits have been promoted and popularized in Daqing Oilfield, Zhongyuan Oilfield, Dagang Oilfield, Shengli Oilfield, Liaohe Oilfield and Jilin Oilfield. Figure 2 PDC diamond drill bit due to the unsatisfactory performance of domestic PDC in the early 1990s and the relatively low design and manufacturing level of drill bits for some drill manufacturers, the drilling effect is not satisfactory until Zhengzhou Xinya Composite Superhard Material Co., Ltd. After putting into production, we are constantly researching and innovating in PDC manufacturing technology. The specifications of the products are consistent with those of foreign products. The quality and reliability of the products are improved, which basically meets the needs of domestic and foreign drill customers for drilling soft-medium hard formation drills. Technical requirements, the company is currently focused on the development of PDC suitable for difficult formations such as hard formations, interlayers, deep wells. In addition, in the manufacturing of drill bits, in addition to Chuanshi-Christensen Diamond Drill Company and Xinjiang Dixie Aes Bit Tool Company, a number of bit manufacturing companies with high quality levels have emerged: such as Chengdu Baishite Diamond Drill Company Wuhan Yisida Tools Co., Ltd., Chengdu Dip Diamond Drill Company and Sichuan Chuanshi Diamond Drill Company. Figure 3 China's first deepwater drilling platform At 9:38 am on May 9, 2012, China's first self-designed and constructed sixth-generation deepwater semi-submersible drilling platform "Offshore Oil 981" drill bit in the South China Sea Tsuen Wan 6-1 area The 1,500-meter-deep underwater exploration into the stratum marks a substantial step in the “deep water strategy†of China's offshore oil industry. In recent years, 50% of the major exploration discoveries in the world have come from the ocean, mainly in deep waters. Deep waters have become an important replacement area for oil and gas exploration and development in the world. China's South China Sea is rich in oil and gas resources. The total petroleum geological resources of the South China Sea Basin are between 23 billion and 30 billion tons. The total geological resources of natural gas is about 16 trillion cubic meters, accounting for one-third of China's total oil and gas resources. 70% of it is contained in the deep sea area of ​​1.537 million square kilometers. Figure 4: Drills with red silk cloth slowly descended After long-term independent innovation, China's oil drilling level has improved significantly. For example, CNOOC has created a single PDC bit (polycrystalline diamond composite bit) in the Liuhua 11-1 oilfield. Into the 4380 meters of offshore oil drilling records; in addition to the development of high temperature and high pressure anti-gas slurry cement slurry system, optimization of well network reservoir development technology, reservoir protection technology, offshore fracturing tools and equipment technology. Figure 5 China oil drilling speed change It is believed that in the near future, the use effect and application field of domestic PDC bits will rapidly improve with the improvement of PDC quality and the improvement of drill bit design and manufacturing level.API refers to the raw materials in the production of various types of preparations, which is the active ingredient in powder,crystal and paste for medicine use through chemical synthesis,plant extract, and preparations of biotechnology institute.It is one substance or mixture during the medicine making period uut it can not be taken directly by patients.
Active Pharmaceutical Ingredients(API)
Active Pharmaceutical Ingredients,Api Clomipramine,Api Baclofen Powder,Esomeprazole Magnesium Trihydrate
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