High-frequency dynamic load rock breaking tool and using method thereof

Abstract

The invention relates to a high-frequency dynamic load rock breaking tool and a using method thereof. High-pressure drilling fluid pushes an impact rotary hammer to move to store kinetic energy, a part of the high-pressure drilling fluid is utilized for being combined with a frequency control module to control steering of a control valve, alternating distribution of the high-pressure drilling fluid on both sides of the impact hammer is achieved, pressure potential energy of the drilling fluid is ingeniously converted into torsional, high-frequency, uniform and stable mechanical impact energy and directly transmitted to a PDC drill bit, so that the torque of a whole drill string remains stable and balanced, the drill bit continuously and stably breaks rock, the drilling quality is improved,and the drilling cost is reduced.

Description

technical field [0001] The invention relates to a drilling tool, which belongs to the field of oil and gas exploration, in particular to a high-frequency dynamic load rock-breaking tool. Background technique [0002] During the drilling process of oil and gas exploration, the hardness, compressive strength and abrasiveness of deep rocks increase significantly, and the energy required to break unit volume increases; at the same time, when the energy transmitted by the drill string cannot ensure the continuous rock breaking of the drill bit, stick-slip will occur Vibration aggravates the lateral and longitudinal vibrations of the drill string. Among them, the circumferential vibration and axial vibration are the most severe without being restricted by the wellbore boundary, and the damage to the drill bit is the most serious, affecting the ROP and footage, resulting in low drilling efficiency, poor quality, issues such as rising costs. Contents of the invention [0003] In ...

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Problems solved by technology

[0002] During the drilling process of oil and gas exploration, the hardness, compressive strength and abrasiveness of deep rocks increase significantly, and the energy required to break unit volume increases; at the same time, when the energy transmitted by the drill string cannot ensure the continuous rock breaking of the drill bit, stick-slip will occur Vibration aggravates the lateral and longitudinal vibrations of the drill string. Among them, the circumferential vibration and axial vibration are the most severe without being restricted by the wellbore boundary, and the damage to the drill bit is the most serious, affecting the ROP and footage, resulting in low drilling efficiency, poor quality, issues such as rising costs

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