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随钻高分辨率电阻率成像仪器探测特性研究

倪卫宁 康正明 路保平 柯式镇 李新 李铭宇

倪卫宁, 康正明, 路保平, 柯式镇, 李新, 李铭宇. 随钻高分辨率电阻率成像仪器探测特性研究[J]. 石油钻探技术, 2019, 47(2): 114-119. doi: 10.11911/syztjs.2019005
引用本文: 倪卫宁, 康正明, 路保平, 柯式镇, 李新, 李铭宇. 随钻高分辨率电阻率成像仪器探测特性研究[J]. 石油钻探技术, 2019, 47(2): 114-119. doi: 10.11911/syztjs.2019005
NI Weining, KANG Zhengming, LU Baoping, KE Shizhen, LI Xin, LI Mingyu. The Detection Characteristics of a High Resolution Resistivity Imaging Instrument while Drilling[J]. Petroleum Drilling Techniques, 2019, 47(2): 114-119. doi: 10.11911/syztjs.2019005
Citation: NI Weining, KANG Zhengming, LU Baoping, KE Shizhen, LI Xin, LI Mingyu. The Detection Characteristics of a High Resolution Resistivity Imaging Instrument while Drilling[J]. Petroleum Drilling Techniques, 2019, 47(2): 114-119. doi: 10.11911/syztjs.2019005

随钻高分辨率电阻率成像仪器探测特性研究

doi: 10.11911/syztjs.2019005
基金项目: 国家科技重大专项“低渗透储层高精度随钻成像技术研究”(编号:2016ZX05021-002)资助
详细信息
    作者简介:

    倪卫宁(1979—),男,安徽黄山人,2000年毕业于石油大学(华东)应用电子技术专业,2003年获石油大学(华东)控制理论与控制工程专业硕士学位,2006年获中国科学院半导体研究所微电子学与固体电子学专业博士学位,副研究员,主要从事井下智能、随钻测控技术研究。E-mail:niwn.sripe@sinopec.com

    通讯作者:

    康正明,kzm991430414@sina.cn

  • 中图分类号: P631.3+3

The Detection Characteristics of a High Resolution Resistivity Imaging Instrument while Drilling

  • 摘要:

    针对现有随钻电阻率成像仪器周向钮扣电极分布少的问题,设计了一种新的钮扣电极分布方案。该仪器周向排布8个圆形钮扣电极,纵向分为2排,且每排钮扣电极直径不同,既能在复合钻进时进行全井眼覆盖扫描成像,又能在滑动钻进时获得8个扇区固定方位的井眼图像;建立了复杂的水平层状地层、含周向异常体地层和水平井地层等3种地层模型,利用有限元方法分析了仪器在不同地层模型中的测井响应特征。分析结果表明:该仪器具有较好的纵向分辨率,钮扣电极的纵向分辨率与其直径相当,可以准确识别方位性高阻地层;水平井地层界面对仪器不同方位测量的影响不同,侧向测量模式在地层界面处的响应与电缆侧向测井类似。该仪器在复杂地层中具有较好的适用性,研究结果对随钻电阻率成像仪器的研发和数据解释具有指导作用。

     

  • 图 1  发射螺绕环等效为理想化磁环示意

    Figure 1.  Schematic of a launching spiral ring that is equivalent to the idealized magnetic ring

    图 2  仪器结构示意

    Figure 2.  Structure of the instrument

    图 3  源距对测量电流的影响

    Figure 3.  Effect of source distance on measured current

    图 4  钮扣电极直径对测量电流的影响

    Figure 4.  Effect of button electrode diameter on measured current

    图 5  测井仪器在水平层状地层的测井响应

    Figure 5.  Logging response of the logging instrument in horizontally layered strata

    图 6  含方向性异常体的地层模型

    Figure 6.  Stratigraphic model with directional anomalous bodies

    图 7  钮扣电极视电阻率与异常体张开角度的关系曲线

    Figure 7.  The relationship curve between the apparent resistivity of the button electrode and the anomalous body opening angle

    图 8  深侧向与钻头视电阻率与异常体张开角度的关系曲线

    Figure 8.  The relationship curve between the apparent resistivity of deep laterolog/bit and the anomalous body opening angle

    图 9  水平井数值模拟模型示意

    Figure 9.  The model of horizontal well numerical simulation

    图 10  钮扣电极测量的视电阻率与仪器距地层界面距离的关系曲线

    Figure 10.  The relationship curve between the apparent resistivity measured by the buttonelectrode and the distance of the instrument to strata interface

    图 11  侧向、钻头测量的视电阻率与仪器距地层界面距离的关系曲线

    Figure 11.  The relationship curve between the apparent resistivity measured by the laterolog/bit and the distance of the instrument to strata interface

    表  1  水平层状地层模型参数

    Table  1.   The model parameters of horizontally layered strata

    编号纵向坐标/m地层厚度/m地层电阻率/(Ω·m)
    1–100.000100.00010
    200.005100
    30.0050.00510
    40.0100.010100
    50.0200.01010
    60.0300.020100
    70.0500.02010
    80.0700.040100
    90.1100.04010
    100.1500.060100
    110.2100.06010
    120.2700.080100
    130.3500.08010
    140.43099.57010
    下载: 导出CSV
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出版历程
  • 收稿日期:  2018-08-28
  • 修回日期:  2018-11-29
  • 网络出版日期:  2022-09-09

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