基于岩石电性参数频散特性的储层参数评价方法

doi:10.11720/wtyht.2019.0233

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摘要

基于岩石电性参数频散特性的物理机理,构建了新的岩石电频散特征参数——频散率P,通过模拟油藏条件下的储层岩石和人工岩样对比电频散实验分析,建立起频散率P与饱和度、孔隙度、渗透率、阳离子交换量Q_v等储层参数的响应关系。研究表明:频散率P与含水饱和度、孔隙度具有较好的线性关系,频散率P与渗透率、阳离子交换量Q_v具有较好的幂律关系。与模值频散率P_Z和实部频散率P_R相比,相位频散率P_φ和虚部频散率P_L能够更好的表征岩石的电频散特征;频散率P和储层参数具有良好的相关性和指示性,可作为电频谱测井的储层评价参数。

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	肖占山
	赵云生
	赵宝成
	李强
	胡海涛
	邵琨
	姚春明

关键词 ：频散特性, 实验分析, 物性参数, 激发极化, 电频谱测井

Abstract：

A new rock electrical dispersion characteristic parameter dispersion rate P is constructed based on physical mechanism of rock electrical parameters dispersion characteristics. By comparing the electric dispersion experimental analysis of reservoir rocks and artificial rock samples under simulated reservoir conditions, the response relationship between the dispersion rate P and the reservoir parameters such as saturation, porosity, permeability and cation exchange capacity Q_v is established. The research shows that the dispersion rate P has a good linear relationship with water saturation and porosity. The dispersion rate P has a good power-law relationship with the permeability and cation exchange capacity Q_v. Compared with the modulus dispersion rate P_Z and the real part dispersion rate P_R, the phase dispersion rate P_φ and the imaginary part dispersion rate P_L can characterize the electrical dispersion of the rock better. The dispersion rate P and reservoir parameters have good correlation and indication, and can be used as reservoir evaluation parameters for resistivity spectrum logging.

Key words： dispersion properties experimental analysis physical parameters induced polarization resistivity spectrum logging

收稿日期: 2019-04-25 出版日期: 2019-10-25

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作者简介: 肖占山(1973-),男,博士,高级工程师,主要从事岩石物理研究、测井理论方法及数值计算工作。Email: lh_xiaozs@cnpc.com.cn

引用本文:

肖占山, 赵云生, 赵宝成, 李强, 胡海涛, 邵琨, 姚春明. 基于岩石电性参数频散特性的储层参数评价方法[J]. 物探与化探, 2019, 43(5): 1105-1110.
Zhan-Shan XIAO, Yun-Sheng ZHAO, Bao-Cheng ZHAO, Qiang LI, Hai-Tao HU, Kun SHAO, Chun-Ming YAO. The evaluation method of reservoir parameters based on the rock's electrical parameter dispersion properties. Geophysical and Geochemical Exploration, 2019, 43(5): 1105-1110.

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https://www.wutanyuhuatan.com/CN/10.11720/wtyht.2019.0233 或 https://www.wutanyuhuatan.com/CN/Y2019/V43/I5/1105

Fig.1 岩石电性参数频散特性曲线

Fig.2 频散率与含水饱和度的关系曲线
a—相位频散率与含水饱和的关系曲线;b—电抗频散率与含水饱和度的关系曲线

Table 1 相位频散率与含水饱和度相关系数

Table 2 电抗频散率与含水饱和度相关系数

Fig.3 频散率与孔隙度的关系曲线
a—相位频散率与孔隙度的关系曲线;b—电抗频散率与孔隙度的关系曲线

Table 3 相位频散率与孔隙度相关系数

Table 4 电抗频散率与孔隙度相关系数

Fig.4 频散率与渗透率的关系曲线
a—相位频散率与渗透率的关系曲线;b—电抗频散率与渗透率的关系曲线

Table 5 相位频散率与渗透率相关系数

Table 6 电抗频散率与渗透率相关系数

Fig.5 频散率与阳离子交换量的关系曲线
a—相位频散率与阳离子交换量的关系曲线;b—电抗频散率与阳离子交换量的关系曲线

Table 7 相位频散率、电抗频散率与阳离子交换量相关系数

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