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基于hp-FEM的随钻电磁波测井仪器响应正演分析

朱庚雪 刘得军 张颖颖 王政 赖天祥

朱庚雪, 刘得军, 张颖颖, 王政, 赖天祥. 基于hp-FEM的随钻电磁波测井仪器响应正演分析[J]. 石油钻探技术, 2015, 43(2): 63-70. doi: 10.11911/syztjs.201502012
引用本文: 朱庚雪, 刘得军, 张颖颖, 王政, 赖天祥. 基于hp-FEM的随钻电磁波测井仪器响应正演分析[J]. 石油钻探技术, 2015, 43(2): 63-70. doi: 10.11911/syztjs.201502012
Zhu Gengxue, Liu Dejun, Zhang Yingying, Wang Zheng, Lai Tianxiang. Forward Modeling of Responses of an ELWD Tool Based on hp-FEM[J]. Petroleum Drilling Techniques, 2015, 43(2): 63-70. doi: 10.11911/syztjs.201502012
Citation: Zhu Gengxue, Liu Dejun, Zhang Yingying, Wang Zheng, Lai Tianxiang. Forward Modeling of Responses of an ELWD Tool Based on hp-FEM[J]. Petroleum Drilling Techniques, 2015, 43(2): 63-70. doi: 10.11911/syztjs.201502012

基于hp-FEM的随钻电磁波测井仪器响应正演分析

doi: 10.11911/syztjs.201502012
基金项目: 

国家自然科学“高精度自适应目标导向hp有限元随钻电阻率测井响应数值模拟”(编号:41074099)和国家自然科学“地下管线磁异常三层分量联合反演成像探测新方法研究”(编号:41374151)资助.

详细信息
    作者简介:

    朱庚雪(1989—),女,山东济宁人,2008年毕业于中国石油大学(北京)石油工程专业,地球探测与信息技术专业在读硕士研究生,主要从事随钻电阻率数值模拟研究.

    通讯作者:

    刘得军,liudj65@163.com.

  • 中图分类号: P631.8+13

Forward Modeling of Responses of an ELWD Tool Based on hp-FEM

  • 摘要: 为研究复杂井周条件下随钻电磁波测井的响应规律,优化仪器参数,开展了基于hp-FEM算法的随钻电磁波测井仪器响应正演研究.根据时谐电磁场理论建立数学模型,考虑边界条件建立了变分方程,采用hp-FEM算法对仪器在二维旋转对称性地层模型中的响应进行模拟.数值模拟结果表明,均匀地层hp-FEM数值解与解析解相对误差仅0.046 3%,验证了正演程序的精确性.在其他参数不变的条件下,发射线圈频率越大,相位差曲线变化幅度越大,且极化角所处位置越靠近真实模型的分界面;仪器的源距越小,极化角越明显,纵向分辨能力越强.相对于低阻层,仪器进入高阻层时,相位差曲线上出现的极化角较大.研究结果表明,提高频率和缩短源距可以更加精确地反映地层界面位置,为地质导向决策提供测井资料支持.

     

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出版历程
  • 收稿日期:  2014-07-13
  • 修回日期:  2015-02-10
  • 刊出日期:  1900-01-01

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