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In recent years, the high-abrasive stratum of the Shaximiao Formation to the Ziliujing Formation on the land of the Yuanba, using the domestic PDC with less footage and lower average drilling rate, has become one of the difficulties in improving the drilling speed in the Yuanba battle. The main problem is reflected in the early mud pack, chipping and ring grinding of the PDC bit. The use of foreign PDCs with tools such as downhole torque impactors and high-torque screws has improved the comprehensive use of drill bits to a certain extent. However, the cost of drilling is high, and the speed of drilling is not effective, according to meters, daily collection tools and drill service fees.
The Southwest Drilling Engineering Research Institute and Jianghan Petroleum Drill Bit Co., Ltd. jointly initiated the project of “Optimization and Development of High-efficiency Drills for Landfill High-abrasive Ground in Yuanbaâ€, which was verified by landfill drilling in Yuanba, from May 8 to June 12 this year. Day, it was used in the Yuanba 10-2H well and Yuanba 204-1 well drilled by Chongqing Drilling Branch. It was drilled from Shangshaxi Temple Group to Qianfoyan Formation with an average footage of 406.38 meters and a pure drill of 137.79 hours. The speed of the machine is 2.95 m / h, and the performance of speed increase and efficiency is good. One day, the daily footage is 136.10 meters, which is the highest record of the daily size of the large-size wellbore in the same section of the 129-meter Yuanba, which was created by the foreign twisting and PDC. Calculated according to the 400-meter footage, using foreign tools plus PDC, the cost is 2.5 times to 4 times the cost of using the river drill PDC plus ordinary screw, and the results of speed increase and efficiency improvement are remarkable.
The successful use of the 314KS1362ADGR PDC bit was positively evaluated by Zhu Congqing, deputy general manager of Southwest Petroleum Engineering Co., Ltd., and the leader of the Chongqing Drilling Branch Yuanba Project. The Chongqing Drilling Branch immediately ordered three of these drills for promotion. After the Guangxi Drilling Branch and the Sichuan Drilling Branch of the same block heard the news, they also requested the order.
Jiang Ding PDC high grinding bit Yangming Yuanba Land
Abstract The Drilling Engineering Research Institute of Southwest Petroleum Engineering Company and Jianghan Petroleum Drill Bit Co., Ltd. have developed three 314KS1362ADGR high-efficiency PDC Bits for the high-abrasive stratum characteristics of Yuanba, combined with the use and failure analysis of drill bits, and nearly two years...
The Drilling Engineering Research Institute of Southwest Petroleum Engineering Company and Jianghan Petroleum Drill Bit Co., Ltd., based on the characteristics of the high-abrasive stratum of the Yuanba land, combined with the use and failure analysis of the drill bit, developed three 314KS1362ADGR high-efficiency PDC bits, and the same section of the Yuanba in the past two years. The domestic and international PDC Drill Bits and the foreign PDCs cooperate with the tools such as the downhole torque impactor and the high-torque screw. Compared with the average comprehensive index, the footage is increased by 61%, the mechanical drilling speed is increased by 36%, and the cost is also reduced.