مقاله Rock fragmentation mechanisms and an experimental study of drilling tools during high-frequency harmonic vibration : تی پی بین

خلاصه مقاله

Resonance drilling is a new technology, still at the laboratory stage. It has great potential to improve rock fragmentation efficiency. We analyzed the amplitude-frequency characteristics of steady-state mechanical vibration excited by harmonic vibration in rocks and an apparatus was built to achieve high frequency vibration of rock. The influence of rock drillability, rotary speed, excitation frequency, and other parameters on the rate of penetration (ROP) in resonance drilling was analyzed. The results show that the rock drillability decreased with an increase in excitation frequency. When drilling with a large size drill bit, the ROP increased with excitation frequency. The ROP reached a maximum value at the resonant frequency of the rock. The ROP of the bit increased linearly with rotary speed when no vibration was applied on the rock and increased approximately exponentially when harmonic vibration was applied. In addition, the resonant frequency of the rock was changing during the process of rock fragmentation, so in order to achieve the desired resonance of the rock, it is necessary to determine an appropriate harmonic vibration excitation frequency.

نویسندگان

Wei Li [ 1268. School of Petroleum Engineering, Northeast Petroleum University, Daqing, Heilongjiang, 163318, China 2268. Research Institute of Petroleum Exploration & Development of CNPC, Beijing, 100083, China ]

Zhang Xiaoning2 [ 1268. School of Petroleum Engineering, Northeast Petroleum University, Daqing, Heilongjiang, 163318, China 2268. Research Institute of Petroleum Exploration & Development of CNPC, Beijing, 100083, China ]

Li Siqi1 [ 1268. School of Petroleum Engineering, Northeast Petroleum University, Daqing, Heilongjiang, 163318, China 2268. Research Institute of Petroleum Exploration & Development of CNPC, Beijing, 100083, China ]

کلمات کلیدی

Resonance drilling high frequency excitation amplitude frequency characteristics natural frequency drillability

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Petroleum Science 2013

Petroleum Science (a journal on petroleum science and technology in the English edition), sponsored by China University of Petroleum, enjoys the assistance of the Science Technology Department of CNPC and three research institutes under the three major oil corporations, CNPC, Sinopec and CNOOC. Petroleum Science is the only English journal in China on petroleum science and technology that is intended for professionals engaged in petroleum science research and technical applications all over the world, as well as the managerial personnel of oil companies. It covers petroleum geology, petroleum geophysics, petroleum engineering, petrochemistry chemical engineering, petroleum mechanics and economic management.

حوزه های تحت پوشش : Mineral Resources, Industrial Chemistry,Chemical Engineering, Industrial and Production Engineering, Energy Economics