摘要
随钻测量仪器的钻铤在高温、高压环境作业过程中承受拉伸、压缩、弯曲、扭转等多种载荷,其力学性能的优劣关系到随钻测量仪器测量功能的可靠性、仪器的使用寿命以及井下作业的安全性,因此开展随钻测量仪器的钻铤的力学分析研究十分必要。以骨架型钻铤结构为研究对象,采用缩比方法,基于相似理论,采用同种材料建立钻铤结构的1∶2缩比模型,对拉伸、压缩、弯曲、扭转4种单载荷工况进行力学性能试验,并通过建立钻铤结构的有限元模型对4种单载荷工况进行了有限元分析。力学试验与有限元仿真对比分析表明,试验结果与仿真结果变化趋势相同,数值相符,相对误差在10%以内。该研究可为全尺寸模型的力学分析提供科学依据,同时为类似结构的工程设计及试验提供参考。
The drill collar of MWD tool works in a high temperature and high pressure environment,and bears various loads such as tension,compression,bending,and torsion during the operation.The strengths and weaknesses of their mechanical properties are related to the reliability of the measurement functions of MWD tool,the service life of the instrument and the safety of downhole operations,so it is very necessary to carry out the mechanical analysis of the drill collar of the MWD tool.With skeleton type drill collar structure as the research object,using the scaled model method,based on the similarity theory,and using the same materials,a 1∶2 scaled model of the drill collar structure was established,and the mechanical properties of four single load conditions of tensile,compression,bending and torsion were tested.The finite element model of drill collar structure was established to carry out the finite element analysis of the four single load conditions.The comparative analysis of mechanical test and finite element simulation shows that the test results and the simulation results have the same changing trend,the values are consistent,and the relativeerror is less than 10%.The research can provide scientific basis for the mechanical analysis of the full-scale model,and provide reference for the engineering design and test of similar structures.
作者
药晓江
卢华涛
尚捷
王清华
李辉
丁元皓
邓月
贾建波
YAO Xiaojiang;LU Huatao;SHANG Jie;WANG Qinghua;LI Hui;DING Yuanhao;DENG Yue;JIA Jianbo(Well-Tech R&D Institutes,China Oilfield Services Limited,Langfang 065201,Hebei)
出处
《长江大学学报（自然科学版）》
2022年第2期88-96,共9页
Journal of Yangtze University(Natural Science Edition)
基金
国家重点研究发展计划项目“深海关键技术与装备大直径旋转导向系统装备研制与应用示范”(2017YFC0307100)
中国科学院战略性先导科技专项(A类)“智能导钻技术装备体系与相关理论研究”(XDA14000000)。
