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Multi-scale mechanics of submerged particle impact drilling
International Journal of Mechanical Sciences ( IF 7.1 ) Pub Date : 2024-11-15 , DOI: 10.1016/j.ijmecsci.2024.109838
Tiancheng Fang, Fushen Ren, Baojin Wang, Jianhua Hou, Marian Wiercigroch

Particle Impact Drilling (PID) technology is highly efficient for exploitation of unconventional energy resources in extra-deep and ultra-hard strata. The multi-scale dynamic responses and fracture mechanics analysis of rock formations in drilling using the PID are discussed in this paper. Firstly, rock fracture experiments and penetration performance under submerged particle jet impact were conducted to analyze fracture mechanisms in macro-scale. Then, the rock constitutive relation model and damage model for the submerged particle jet impacts using the damage and failure theory and correlation analysis model were constructed. On this basis, multi-scale dynamic responses and nonlinear analysis of failure performance with submerged particle jet impact were conducted. Our results indicate continuous damage growth in macro-scale and radial cracks development in micro-scale when submerged particles impact the drilled formation in a process of creating a well.

中文翻译:


埋没颗粒冲击钻进的多尺度力学



粒子冲击钻探 (PID) 技术在超深和超硬地层中高效开发非常规能源资源。本文讨论了使用 PID 对钻井中岩层的多尺度动力响应和断裂力学分析。首先,进行岩石破裂实验和水下粒子射流冲击下的侵彻性能,在宏观尺度上分析破裂机理;然后,利用损伤破坏理论和关联分析模型构建了岩石本构关系模型和水下粒子射流冲击损伤模型。在此基础上,对水下粒子射流冲击的失效性能进行了多尺度动力学响应和非线性分析。我们的结果表明,在造井过程中,当淹没颗粒撞击钻探的地层时,宏观尺度的损伤会持续增长,微观尺度的径向裂纹会发展。
更新日期:2024-11-15
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