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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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

Received: 25 April 2019 Published: 25 October 2019

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	Zhan-Shan XIAO
	Yun-Sheng ZHAO
	Bao-Cheng ZHAO
	Qiang LI
	Hai-Tao HU
	Kun SHAO
	Chun-Ming YAO

Cite this article:

Zhan-Shan XIAO,Yun-Sheng ZHAO,Bao-Cheng ZHAO, et al. The evaluation method of reservoir parameters based on the rock's electrical parameter dispersion properties[J]. Geophysical and Geochemical Exploration, 2019, 43(5): 1105-1110.

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https://www.wutanyuhuatan.com/EN/10.11720/wtyht.2019.0233 OR https://www.wutanyuhuatan.com/EN/Y2019/V43/I5/1105

Rock's electrical parameter dispersion properties

The relationship between the frequency dispersivity and water saturation
a—the relationship between the frequency dispersivity of phase and water saturation;b—the relationship between the frequency dispersivity of reactance and water saturation

Correlation coefficient between frequency dispersivity of phase and water saturation

Correlation coefficient between frequency dispersivity of reactance and water saturation

The relationship between the frequency dispersivity and porosity φ
a—the relationship between the frequency dispersivity of phase and porosity φ;b—the relationship between the frequency dispersivity of reactance and porosity φ

Correlation coefficient between frequency dispersivity of phase and porosity

Correlation coefficient between frequency dispersivity of reactance and porosity

The relationship between the frequency dispersivity and permeability
a—the relationship between the frequency dispersivity of phase and permeability; b—the relationship between the frequency dispersivity of reactance and permeability

Correlation coefficient between frequency dispersivity of phase and permeability

Correlation coefficient between frequency dispersivity of reactance and permeability

The relationship between the frequency dispersivity and cation exchange capacity
a—the relationship between the frequency dispersivity of phase and cation exchange capacity; b—the relationship between the frequency dispersivity of reactance and cation exchange capacity

Correlation coefficient of frequency dispersivity of phase, frequency dispersivity of reactance and cation exchange capacity

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