大直径旋转井壁取心仪研制与应用  

Development and Application of the Large Diameter Rotary Sidewall Coring Tool

作　　者：牛延吉 刘先平 嵇成高 蔡井维 李伟 李卫强 NIU Yanji;LIU Xianping;JI Chenggao;CAI Jingwei;LI Wei;LI Weiqiang(Tianjin Branch,China Petroleum Logging CO.LTD.,Tianjin 300280,China;Post Doctoral Research Station,China University of Petroleum,Beijing 102249,China)

机构地区：[1]中国石油集团测井有限公司天津分公司,天津300280 [2]中国石油大学(北京)博士后科研流动站,北京102249

出　　处：《测井技术》2018年第2期235-237,共3页Well Logging Technology

基　　金：渤海钻探工程有限公司项目(2016ZD04K;2016B02K);天津市企业博士后创新项目择优资助计划资助项目

摘　　要：为解决传统液压驱动式旋转井壁取心仪存在的驱动钻头扭矩低、岩心收获率低等问题,研制一种基于直流电机驱动钻头、最大扭矩可达8N·m的大直径旋转井壁取心仪。阐述了仪器的结构、性能指标、工作原理,对取心探头作了重点介绍。仪器研制成功后在各油田地质区块得到应用,取心收获率达90%以上。Traditional hydraulic driven rotary sidewall coring tool have the problems of low bit torque and low core recovery rate.To solve these problems,this paper developed a Large-Diameter Rotary Sidewall Coring Tool(LRCT)with a maximum torque of 8 N·m based on a DC motor driven drill.In addition,a detailed introduction to the coring probe is also made in this article,as well as the structure,performance indicators and working principle of the tool.The tool has been widely used in many geological blocks of different oilfields.According to statistics,the coring recovery rate is over 90%.

关 键 词：井壁取心 直流电机驱动 扭矩 取心收获率 

分 类 号：P631.84[天文地球—地质矿产勘探]