随钻测井仪器主基体结构强度仿真与优化设计  

Optimization Design of the Main-body of LWD Instrument

作　　者：侯洪为[1] 于增辉[1] 廖胜军[1] 国朝健 郭宇 HOU Hongwei;YU Zenghui;LIAO Shengjun;GUO Chaojian;Guo Yu(Well Tech R&D Institute,China Oilfield Services Ltd.,Sanhe,Hebei 065201,China;College of Aerospace Science and Engineering,National University of Defense Technology,Changsha,Hunan 410073,China)

机构地区：[1]中海油田服务股份有限公司油田技术研究院,河北三河065201 [2]国防科技大学空天科学学院,湖南长沙410073

出　　处：《石油管材与仪器》2023年第3期39-41,45,共4页Petroleum Tubular Goods & Instruments

基　　金：中国科学院A类战略性先导科技专项项目“随钻高分辨率电成像仪器研制”(编号:XD14020201)。

摘　　要：主基体是随钻测井仪器最重要的机械承载体。主基体上既要开槽和孔安装测量探头与电路模块,又要承受扭矩、压力、弯矩等钻井负载。槽与孔削弱了主基体的强度,也使主基体结构变得复杂。针对这一问题,引入有限元方法对基体强度进行校核,并根据计算结果优化主基体设计,增加薄弱部位承载截面面积,降低应力集中系数。优化后的基体结构安全系数满足要求。The main-body is the most important part of LWD instrument,on which grooves and holes are usually machined to carries sensors and circuits.The main-body also bear drilling loads such as tosion,compression and bending.The grooves and holes weaken the strength of the main-body and make its structure complicated.Aiming at this problem,finite element method is introduced to verify and optimize the strength of the main-body.Optimization design of the main-body increases the section of the weak position of the main-body and decrease the stress concentration factor.The safety factor of the optimized main-body meets the requirement.

关 键 词：随钻测井仪器 主基体 有限元 结构强度 优化设计 

分 类 号：TH122[机械工程—机械设计及理论]