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超深探测随钻电磁波测井地质信号特性研究

刘天淋 岳喜洲 李国玉 马明学 王仡仡

刘天淋,岳喜洲,李国玉,等. 超深探测随钻电磁波测井地质信号特性研究[J]. 石油钻探技术,2022, 50(6):41-48 doi: 10.11911/syztjs.2022110
引用本文: 刘天淋,岳喜洲,李国玉,等. 超深探测随钻电磁波测井地质信号特性研究[J]. 石油钻探技术,2022, 50(6):41-48 doi: 10.11911/syztjs.2022110
LIU Tianlin, YUE Xizhou, LI Guoyu, et al. Study over the geo-signal properties of ultra-deep electromagnetic wave logging while drilling [J]. Petroleum Drilling Techniques,2022, 50(6):41-48 doi: 10.11911/syztjs.2022110
Citation: LIU Tianlin, YUE Xizhou, LI Guoyu, et al. Study over the geo-signal properties of ultra-deep electromagnetic wave logging while drilling [J]. Petroleum Drilling Techniques,2022, 50(6):41-48 doi: 10.11911/syztjs.2022110

超深探测随钻电磁波测井地质信号特性研究

doi: 10.11911/syztjs.2022110
基金项目: 国家科技重大专项“大型油气田及煤层气开发”(编号:2016ZX05058002-002)、国家重点研发计划“深海关键技术与装备”(编号:2017YFC0307104)、中国海洋石油集团科技项目“Drilog2.0随钻测井系列化技术研究”(编号:CNOOC-KJ 135 ZDXM 20 YF2019-1)联合资助
详细信息
    作者简介:

    刘天淋(1993—),男,四川合江人,2016年毕业于中国石油大学(华东)勘查技术与工程专业,2019年获中国石油大学(华东)地质资源与地质工程专业硕士学位,工程师,主要从事随钻电磁波类仪器研发工作。E-mail: liutl5@cosl.com.cn。

  • 中图分类号: P631.8+11

Study over the Geo-Signal Properties of Ultra-Deep Electromagnetic Wave Logging While Drilling

  • 摘要:

    为了解超深探测随钻电磁波测井地质信号的过界面特征及其影响因素,基于层状各向异性介质多分量电磁波测井解析解,对PeriScope轴向发射–倾斜接收线圈系、DWPR双斜线圈系以及GeoSphere对称测量模式3种结构的地质信号,在超深探测随钻电磁波测井的低频、长源距条件下进行了数值模拟,对比了3种结构地质信号的过界面响应特征、探测深度以及各向异性的影响,探讨了其在超深探测中的适用性。研究得知,3种结构的地质信号均可指示地层界面及其方位,且长源距、高频下响应的非单调性明显,其中DWPR双斜地质信号的单调性最强;电阻率比100∶1地层模型下,GeoSphere地质信号具有更大的探测深度,DWPR双斜线圈系地质信号次之;DWPR双斜线圈系的幅度比地质信号不受地层各向异性的影响,其余地质信号均受地层各向异性的影响。研究结果表明,降低频率、加大源距可有效增强地质信号探测深度,降低频率、减小源距有利于地质信号对地层界面响应的单调性,各向异性对绝大部分地质信号的影响明显。

     

  • 图 1  三层地层模型下3种结构地质信号的响应特征

    Figure 1.  Response characteristics of three geo-signals using a three-layer stratigraphic model

    图 2  不同源距下3种结构幅度比地质信号过界面的响应特征

    Figure 2.  Response characteristics of geo-signals with three structural amplitude ratios through interfaces using different spacing

    图 3  不同源距下3种结构相位差地质信号过界面的响应特征

    Figure 3.  Response characteristics of geo-signals with three structural phase differences through interfaces using different spacing

    图 4  不同频率下3种结构幅度比地质信号过界面的响应特征

    Figure 4.  Response characteristics of geo-signals with three structural amplitude ratios through interfaces using different frequencies

    图 5  不同频率下3种结构相位差地质信号过界面的响应特征

    Figure 5.  Response characteristics of geo-signals with three structural phase differences through interfaces using different frequencies

    图 6  不同源距下3种幅度比地质信号的探测深度

    Figure 6.  DOI of geo-signals with three amplitude ratios using different spacing

    图 7  不同源距下3种结构相位差地质信号的探测深度

    Figure 7.  DOI of geo-signals with three structural phase differences using different spacing

    图 8  不同频率下3种幅度比地质信号的探测深度

    Figure 8.  DOI of geo-signals with three amplitude ratios using different frequencies

    图 9  不同频率下3种结构相位差地质信号的探测深度

    Figure 9.  DOI of geo-signals with three structural phase differences using different frequencies

    图 10  不同各向异性系数下3种结构幅度比地质信号的响应特征

    Figure 10.  Response characteristics of geo-signals with three structural amplitude ratios using different anisotropy coefficients

    图 11  不同各向异性系数下3种结构相位差地质信号的响应特征

    Figure 11.  Response characteristics of geo-signals with three structural phase differences using different anisotropy coefficients

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出版历程
  • 收稿日期:  2022-09-15
  • 修回日期:  2022-10-13
  • 网络出版日期:  2022-11-07

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