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基于频散测试分析的时频电磁资料校正处理及储层评价

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沈义斌, 杨俊, 曹阳, 刘雪军, 王财富, 何展翔. 基于频散测试分析的时频电磁资料校正处理及储层评价[J]. 地质与资源, 2022, 31(3): 404-411. doi: 10.13686/j.cnki.dzyzy.2022.03.016
引用本文: 沈义斌, 杨俊, 曹阳, 刘雪军, 王财富, 何展翔. 基于频散测试分析的时频电磁资料校正处理及储层评价[J]. 地质与资源, 2022, 31(3): 404-411. doi: 10.13686/j.cnki.dzyzy.2022.03.016
shu
SHEN Yi-bin, YANG Jun, CAO Yang, LIU Xue-jun, WANG Cai-fu, HE Zhan-xiang. TIME-FREQUENCY ELECTROMAGNETIC DATA CORRECTION PROCESSING AND RESERVOIR EVALUATION BASED ON DISPERSION TEST ANALYSIS[J]. Geology and Resources, 2022, 31(3): 404-411. doi: 10.13686/j.cnki.dzyzy.2022.03.016
Citation: SHEN Yi-bin, YANG Jun, CAO Yang, LIU Xue-jun, WANG Cai-fu, HE Zhan-xiang. TIME-FREQUENCY ELECTROMAGNETIC DATA CORRECTION PROCESSING AND RESERVOIR EVALUATION BASED ON DISPERSION TEST ANALYSIS[J]. Geology and Resources, 2022, 31(3): 404-411. doi: 10.13686/j.cnki.dzyzy.2022.03.016
shu

基于频散测试分析的时频电磁资料校正处理及储层评价

  • 1.

    深圳市深远海油气勘探技术重点实验室(南方科技大学), 广东 深圳 518055

  • 2.

    广东省地球物理高精度成像技术重点实验室(南方科技大学), 广东 深圳 518055

  • 3.

    南方海洋科学与工程广东省实验室, 广东 广州 511458

  • 4.

    东方地球物理公司, 河北 涿州 072751

  • 5.

    南方科技大学 地球与空间科学系, 广东 深圳 518055

  • 基金项目:
    国家自然科学基金项目"深地/深海探测中强电流激发下可控源电磁法激电效应机理研究及应用"(41874085);深圳市深远海油气勘探技术重点实验室项目(ZDSYS20190902093007855);南方海洋科学与工程广东省实验室(广州)人才团队引进重大专项(GML2019ZD0203)
详细信息
    作者简介: 沈义斌(1995-), 男, 硕士研究生, 应用地球物理专业, 通信地址广东省深圳市南山区学苑大道1088号, E-mail//11930420@mail.sustech.edu.cn
    通讯作者: 何展翔(1962-), 男, 博士, 教授, 主要从事电磁探测方法研究及应用工作, 通信地址广东省深圳市南山区学苑大道1088号, E-mail//hezx@sustech.edu.cn

  • 中图分类号: P631.3;P618.13

TIME-FREQUENCY ELECTROMAGNETIC DATA CORRECTION PROCESSING AND RESERVOIR EVALUATION BASED ON DISPERSION TEST ANALYSIS

  • 1.

    Shenzhen Key Laboratory of Deep Sea Oil and Gas Exploration Technology(Southern University of Science and Technology), Shenzhen 518055, Guangdong Province, China

  • 2.

    Guangdong Provincial Key Laboratory of Geophysical High Precision Imaging Technology(Southern University of Science and Technology), Shenzhen 518055, Guangdong Province, China

  • 3.

    Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou), Guangzhou 511458, China

  • 4.

    Oriental Geophysics Co. Ltd., Zhuozhou 072751, Hebei Province, China

  • 5.

    Department of Earth and Space Science, Southern University of Science and Technology, Shenzhen 518055, Guangdong Province, China

More Information

    摘要

  • 时频电磁法(TFEM)作为一项比较成熟的油气检测技术，在国内外已得到了广泛的应用.在时频电磁解释过程中，主要采用电阻率和极化率联合定性检测，不能给出含油气的定量评价，并把地层电阻率视作与温度、压力无关的量.但随着地层深度增加，地层的温度、压力变化会对电阻率产生影响.由温度、压力的变化引起的电性变化会给储层解释带来误差.通过对岩石的频散测试，分析岩石电性参数随频率变化的规律，并结合岩石的频散性质研究了地层电阻率受温度、压力影响后的变化特征，而后通过拟合获得岩石电阻率与温度、压力的近似关系式.利用恰当的温压-电阻率函数，对时频电磁储层数据进行电阻率校正; 利用校正后的电阻率数据，基于Archie公式计算研究区储层目标段的饱和度，并对储层进行了定量评价.

    Time-frequency electromagnetic method(TFEM), as a relatively mature oil and gas detection technology, has been widely used both in China and overseas. In the process of time-frequency electromagnetic interpretation, the combined qualitative detection of resistivity and polarizability is commonly used. However, such method cannot quantitatively evaluate the oil and gas content, and regards the formation resistivity as a quantity independent of temperature and pressure. In fact, with the increase of formation depth, the temperature and pressure changes of the formation will affect the resistivity, which would cause errors to reservoir interpretation. This paper analyzes the variation law of rock electrical parameters with frequency through the frequency dispersion test of rock. Combined with the dispersion properties of rock, the variation characteristics of formation resistivity affected by temperature and pressure are studied, and then the approximate relationship between rock resistivity and temperature/pressure is obtained by fitting. Using appropriate temperature-pressure-resistivity function, the time-frequency electromagnetic reservoir data are corrected for resistivity, by which the saturation of the target reservoir in the study area is calculated with the Archie formula, and the reservoir is quantitatively evaluated.

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  • 图 1  不同压力条件下灰色含砂质硅质灰岩(137号岩心) 的频谱特征

    Figure 1. 

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    图 2  不同温度条件下灰色白云质灰岩(114号岩心) 的频谱特征

    Figure 2. 

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    图 3  灰色白云质灰岩(116号岩心)复电阻率温度拟合

    Figure 3. 

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    图 4  灰色白云质灰岩(116号岩心)复电阻率压力拟合

    Figure 4. 

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    图 5  研究区温压梯度曲线(据文献[17]修改)

    Figure 5. 

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    图 6  灰色灰岩(120号岩心)复电阻率温度拟合

    Figure 6. 

    下载: 全尺寸图片 幻灯片

    图 7  灰色灰岩(120号岩心)复电阻率压力拟合

    Figure 7. 

    下载: 全尺寸图片 幻灯片

    图 8  测线EM1902电阻率反演剖面

    Figure 8. 

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    图 9  测线EM1902极化率剖面

    Figure 9. 

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    图 10  测线EM1902校正后反演剖面

    Figure 10. 

    下载: 全尺寸图片 幻灯片

    图 11  测线TFEM1902 (1.6~3.9 km)储层饱和度估算

    Figure 11. 

    下载: 全尺寸图片 幻灯片

    表 1  实验岩心参数表

    Table 1.  Parameters of cores for experiment

    岩心编号 岩性 长度/cm 直径/cm 密度/(g/cm3) 孔隙度/%
    114 灰色白云质灰岩 4.28 2.5 2.79 0.6
    116 灰色白云质灰岩 4.56 2.45 2.85 0.8
    120 灰色灰岩 3.95 2.46 2.74 0.5
    137 灰色含砂质硅质灰岩 1.67 2.46 2.83 1.5
    下载: 导出CSV

    表 2  研究区地层压力分类表

    Table 2.  Classification of formation pressure in the study area

    地层压力分类 常压 高压 超高压
    压力系数 0.95~1.1 1.1~1.5 >1.5
    下载: 导出CSV
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收稿日期:  2022-04-25
修回日期:  2022-06-09
刊出日期:  2022-06-25

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