随钻测斜仪磁流变液式钻井液脉冲控制阀优化设计研究

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中图分类号：TE927 文献标识码：A DOI：10.12473/CPM.202410003

Abstract：Fast response ofdrilling fluid pulse control valvefor inclinometer while drilling is the key to achieve accurate measurement and effctive transmision of downhole data.To address the lag response issue in existing technologies，anoptimization design studyof magnetorheological driling fluid pulse control valve was conducted.First，based on the braking principleof the magnetorheological driling fluid pulse control valve，the mechanical model of its braking processwas established.Then，ANSYS Maxwell was used to establish a simulation modeland carryoutparameter sensitivityanalysis of thecontrol valve，including thecontrol valve structure， external magnetic field strength and magnetorheological fluid type.The study resultsshow that when the optimal parameters are current of 1.7A，coil turns of 3Oo，braking gapof1 mm and flange heightof 6 mm，the control valve can generatea braking force of 61.62Nand meet the braking conditions；moreover，the braking capacity of the control valve can be enhanced by increasing the coil turns，reducingthe braking gap and increasing the flange height.The study resultsprovide technical supportfor the application of magnetorheological fluid inclinometer while drilling.

Keywords：inclinometer while drilling；magnetorheological fluid；control valve；magnetic field；magnetic induction intensity；braking capacity

0 引言

随钻测量技术可实时监测井下数据，广泛应用于油气钻井的井眼轨迹控制[1-3]。（剩余12601字）