Abstract
As a non-contact efficient rock-breaking technology for hard formations, particle slurry jet impact drilling technology mainly uses high-speed jet formed with steel particles and polymer slurry to break rock rapidly. In order to investigate failure mechanism and damage process of particle impact drilling, dynamical simulation was used to study the rock breaking process under multi-particles impact. The simulation results show that high stress damage zone is formed by shear effect and crack propagation is caused by tensile effect. Then, rock breaking effect of particles with different shapes, nozzle diameters and velocities was analyzed. Meanwhile, comparative analysis between rock samples of experiment and simulation results indicated that the experiment results are consistent with simulation.
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Acknowledgments
The study was funded by National Natural Science Foundation of China (Number 11972113), the Guiding Innovation Fund Project of Northeast Petroleum University (Number 2019YDL-07).
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Fang, Tc., Liu, Hx., Ren, Fs. (2022). Process Simulation and Verification Analysis of Particle Slurry Jet Impact Drilling. In: Lin, J. (eds) Proceedings of the International Field Exploration and Development Conference 2021. IFEDC 2021. Springer Series in Geomechanics and Geoengineering. Springer, Singapore. https://doi.org/10.1007/978-981-19-2149-0_430
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DOI: https://doi.org/10.1007/978-981-19-2149-0_430
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