摘要
探头壳体是岩性密度测井仪的核心部件。在测井作业中,探头壳体与油井井壁摩擦形成表面磨损,当磨损达到设计极限时,会造成探头壳体整体失效。针对该问题,提出一种岩性密度测井仪分体式探头壳体的结构设计方案,对耐磨护壳的表面处理和连接方式等方面进行改进,提出了最优表面处理的选用方法及连接螺钉强度计算的经验公式。对新设计的分体式探头壳体进行了高温高压试验,以及加速度为29.4 m/s2的冲击试验和频率为10~200 Hz的振动试验。试验结果表明,该设计完全满足探头壳体的技术要求,有效地解决了岩性密度测井仪探头壳体磨损后不可修复的问题,延长了部件的工作寿命,探头壳体的维修效率提高92.3%,维修成本降低80%。
The probe shell is the core component of the lithology density logging tool.The friction between the probe shell and the well wall causes surface wear during logging.When the wear reaches the design limit,the probe shell fails as a whole.A new structural separate design scheme of probe shell is proposed.The surface treatment and connection methods of the wear-resistant protective shell are improved.A reasonable selection of surface treatment methods and an empirical formula for calculating the strength of connecting screws are proposed.The high temperature and high pressure test,the shock test with an acceleration of 29.4 m/s2 and a vibration test with a frequency range of 10 to 200 Hz are carried out.The results show that the design fully meets the technical requirements of the probe shell.The problem that the probe shell of the lithology density logging tool cannot be repaired after wear is solved effectively.The lifetime of the components extends and the maintenance efficiency of the probe shell increases to 92.3%,the maintenance cost is reduced by 80%as well.
作者
高世博
孙七零
王晓冬
刘旭
韩壮科
马颖
GAO Shibo;SUN Qiling;WANG Xiaodong;LIU Xu;HAN Zhuangke;MA Ying(Manufacture Company, China National Logging Corporation, Xi’an, Shaanxi 710077, China;Logging Technology Research Institute, China National Logging Corporation, Xi’an, Shaanxi 710077, China;Well Logging Technology Pilot Test Center, China National Petroleum Corporation, Xi’an, Shaanxi 710077, China)
出处
《测井技术》
CAS
2022年第3期257-261,共5页
Well Logging Technology
关键词
岩性密度测井仪
分体式探头外壳
结构设计
工作寿命
强度计算
lithology density logging tool
separacte probe shell
structural design
lifetime
strength calculation
