小井眼微地震测井仪推靠装置运动特性分析与试验研究  

Analysis and Experimental Study on Motion Characteristics of Eccentering Device of Slimhole Microseismic Logging Tool

作　　者：张建伟 吴伟[1] 张晋 王金超 白保鑫 Zhang Jianwei;Wu Wei;Zhang Jin;Wang Jinchao;Bai Baoxin(School of Mechanical Engineering,Xi'an Shiyou University,Xi'an 710065,China;Xi'an Ital Technology Development Co.,Ltd.,Xi'an 710065,China)

机构地区：[1]西安石油大学机械工程学院,西安710065 [2]西安伊泰尔科技开发有限责任公司,西安710065

出　　处：《机电工程技术》2023年第2期109-113,共5页Mechanical & Electrical Engineering Technology

摘　　要：为改善井中微地震测井仪推靠装置结构复杂难以满足小井眼测井,或在小井眼测井中运动可靠性低、推靠耦合不稳定的问题,研制一种外径60 mm,适用于127~165.1 mm井径的微地震测井仪推靠装置。依据推靠装置工作原理应用闭环矢量法建立推靠机构数学模型,利用数值分析推靠机构运动特性,研究各构件的位移、速度及加速度,通过Adams仿真软件分析推靠机构运动规律,与数值计算进行对比验证数学模型合理性。结果表明:推靠臂完全打开时间为15 s,在最小适用井径127 mm时推靠力为390 N,最大适用井径165.1 mm时推靠力为342 N,样机试验表明,推靠力试验值与理论值相差2.1%,最小推靠力达到仪器自重3倍以上,能实现井中停靠并与井壁良好耦合,验证了推靠装置的运动合理性和可靠性,为后续推靠机构优化提供理论参考。In order to improve the complex structure of micro-seismic logging eccentering device,which is difficult to meet the requirements of thin hole logging,or the low movement reliability and unstable sidewall contact coupling in thin hole logging,a micro-seismic logging eccentering device with an outer diameter of 60 mm was developed,which was suitable for 127~165.1 mm well diameter.According to the working principle of the push mechanism,the closed-loop vector method was applied to establish the mathematical model of the eccentering mechanism.The motion characteristics of the eccentering mechanism were analyzed numerically,and the position,velocity and acceleration equations of each component were studied.The motion law of the eccentering mechanism was analyzed by Adams simulation software,and the rationality of the mathematical model was verified by comparing with the numerical calculation.The results show that the full opening time of the eccentering arm is 15 s,the eccentric force is 390 N when the minimum applicable well diameter is 127 mm,and the eccentric force is 342N when the maximum applicable well diameter is 165.1 mm.The prototype test shows that the experimental value of eccentric force is 2.1%different from the theoretical value,and the minimum eccentric force is more than 3 times the weight of the instrument,which can realize the docking in the well and good coupling with the borehole wall.The rationality and reliability of the eccentering device are verified,which provides a theoretical reference for the subsequent optimization of the eccentering mechanism.

关 键 词：小井眼 推靠装置 运动学分析 ADAMS仿真 样机试验 

分 类 号：TE937[石油与天然气工程—石油机械设备]