关键词: 钻井提速, 机械钻速, 射吸式冲击器, 轴向冲击

Abstract: With the development of oil and gas exploration and development in depth, the number of deep and ultra deep wells has gradually increased. Meanwhile, the hardness of the drilled formations has subsequently increased, the drilling speed is also greatly reduced. To solve this problem, a fire-suction impactor is developed. By providing the high frequency axial impact force to the drill bit, auxiliary rock breaking is achieved, thus greatly improving the rop. Otherwise, laboratory experiments show that the high frequency axial impact vibration of the fire-suction hydraulic impactor can provide some impact to the drill bit. On site experimental results show that the rate of mechanical drilling speed is increased by 133.0% after using the fire-suction hydraulic impactor. And the drilling time of fire-suction hydraulic impactor reaches 130 h, the downhole working time is 154 h, greatly improving the service life. The results of the study provide a theoretical basis for the reasonable application of the firesuction hydraulic impactor in the drilling process.

Key words: Increase drilling speed, Mechanical drilling speed, Firesuction hydraulic impactor, Axial impact