| 瞬变电磁法套损检测探头偏心校正方法 |
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| 引用本文： | 刘红兰,安百新,杨玲,党博.瞬变电磁法套损检测探头偏心校正方法[J].传感器与微系统,2018(2):47-49,52. |
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| 作者姓名： | 刘红兰 安百新 杨玲 党博 |
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| 作者单位： | 中国石油化工集团公司胜利油田分公司石油工程技术研究院,山东东营,257000
西安石油大学光电油气测井与检测教育部重点实验室,陕西西安,710065 |
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| 基金项目： | 国家自然科学基金资助项目，陕西省教育厅重点学科研究计划(重点实验室)资助项目 |
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| 摘 要： | 随着斜井、水平井的大规模增加,扶正器的安装偏差、重力等因素引起的仪器偏心问题越来越严重.为了减小仪器探头偏心对测井响应信号的影响,建立了基于瞬变电磁(TEM)法的仪器探头居中模型,结合测井仪器偏离井眼轴线的角度和距离,提出了偏心校正方法,分析了仪器居中和偏心2种情况下的接收响应信号.试验结果表明:采用本文所述探头偏心情况下的接收信号模型,可有效减小仪器偏心效应对套管损伤检测的影响,提高了测井数据的解释精度,更准确地反映出井下介质信息.
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| 关 键 词： | 瞬变电磁 套损检测 探头偏心 测井解释 transient electromagnetic (TEM ) casing damage inspection probe eccentricity well-logging interpretation |
Transient electromagnetic method with probe eccentricity correction for casing damage inspection |
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| LIU Hong-lan,AN Bai-xin,YANG Ling,DANG Bo.Transient electromagnetic method with probe eccentricity correction for casing damage inspection[J].Transducer and Microsystem Technology,2018(2):47-49,52. |
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| Authors: | LIU Hong-lan AN Bai-xin YANG Ling DANG Bo |
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| Abstract: | With the massive increase in deviated well and horizontal well,the problem of tool eccentricity caused by factors of installation deviation of centralizer and gravity becomes more and more serious. In order to reduce influence of tool eccentricity on response signal,probe centering model based on transient electromagnetic(TEM) method is established. Combining angle and distance of logging tool to borehole axis,tool eccentricity correction method is proposed. The receiving signals with tool centering and tool eccentricity are analyzed. Experimental results demonstrate that the receiving signal model of tool eccentricity described in the paper can effectively reduce the influence of the eccentricity on casing inspection. The interpretation precision of logging data can be improved and the downhole media information can be better reflected. |
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