On September 15th, the reporter was informed that Jilin Oilfield successfully developed a personalized PDC drill bit. After application, the drilling rate increased by 238% year-on-year, and the single-drill bit speed increased by more than two times. Deep tight gas exploration wells in the Dehui area of ​​Jilin Oilfield have problems such as slow drilling speed, less drill bit footage, and frequent drilling. Researchers have proposed a speed-up scheme for individualized PDC bit + straight screw composite drilling for sand and mudstone interlayers, gravel layer development, rock abrasiveness and poor drillability. Through in-depth research, carefully summarize the actual drilling data, analyze the failure mode of the lower formation PDC bit, carry out the individual design of the drill bit, improve the front impact capability and extend the service life of the drill bit. From September 8 to 12, Jilin Oilfield conducted field tests in Well Deshen 80. The drill bit drilled from 3,271 meters to 3,552 meters and the average mechanical drilling rate reached 5.54 meters per hour. With this technology, the daily footage is increased to 100 meters, and the fastest time is only five or six minutes per meter. The speed-up effect is remarkable. The successful application of this technology will provide strong technical support for the rapid exploration in the deep area of ​​the region and even in Songnan.
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