摘要
随着钻井深度的增加,地层岩石的强度、硬度和研磨性等特性明显增加,从而导致钻头的破岩效率较低;同时随着钻柱长度增加,钻柱系统扭转刚度降低,井下钻柱系统容易发生卡钻、黏滑等现象;为了提高钻头的破岩效率和减少黏滑现象,建立了复合冲击的运动学模型和动力学模型,根据理论模型提出了一种新型复合冲击器,利用设计的新型复合冲击器结构参数以及性能参数,验证了理论模型的正确性,同时依据理论模型研究了输入流量随时间对新型复合冲击器的动力学特性的影响规律,并利用仿真结果验证了理论的可靠性,对复合冲击工具的研发与应用选型具有重要的指导意义。
With the increase of drilling depth, the strength, hardness and abrasiveness of the formation rocks increase obviously,which lead to the low rock-breaking efficiency of the drill bit. Meanwhile, as the length of drill string increases, the torsional stiffness of the drill string system decreases. The downhole string system is prone to sticking, slippage and other phenomena. In order to improve the rock breaking efficiency and reduce the stick-slip phenomenon of the drill bit, the kinematics model and dynamic model of the composite impact are established. According to the theoretical model, a new composite impactor is proposed, which uses the designed structural parameters of the new composite impactor and the performance parameters verify the correctness of the theoretical model. At the same time, according to the theoretical model, the influence law of the input flow on the dynamic characteristics of the new composite impactor is studied. The simulation results are used to verify the reliability of the theory. R&D and application selection have important guiding significance.
作者
田家林
胡志超
张昕
葛桐旭
朱志
TIAN Jialin;HUZhichao;ZHANG Xin;GETongxu;ZHUZhi(School of Mechatronic Engineering,Southwest Petroleum University,Chengdu 610500;Sichuan Xieming Technology Co.,Ltd.,Chengdu 610051;Engineering Technology Research Institute,CNPC Xibu Drilling Engineering Company Limited,Kelamayi 834000;College of Mechanical Engineering,Xinjiang University,Urumqi 830011)
出处
《机械工程学报》
EI
CAS
CSCD
北大核心
2022年第7期141-151,共11页
Journal of Mechanical Engineering
基金
国家自然科学基金(51674216)
国家科技重大专项(2016ZX05038)
国家留学基金(201608515039)资助项目。
关键词
钻井
复合冲击
动力学
振动
钻柱系统
黏滑
drilling
composite impact
dynamics
vibration
drill string system
stick slip
