摘要
为了深入认识不同温度条件下砂岩储层的电学特性,选择饱和地层水均质砂岩岩心电阻率与温度的变化关系为研究出发点,在等效介质理论的HB方程基础上,通过分别考虑温度对地层水电阻率及岩石颗粒电阻率的影响,在电阻率模型中首次引入温度参量,进而建立饱和地层水均质砂岩岩心半经验型电阻率模型,并应用相关文献中实验数据验证模型的适用性。结果表明,该模型能够有效反映饱和地层水砂岩岩心电阻率与温度的变化关系。基于HB方程的岩心电阻率模型的建立,为进一步研究地层条件下岩心电阻率的变化规律提供了理论参考。
In order to understand the electrical characteristics of all kinds of reservoirs under different temperature,the relationship between temperature and the resistivity of homogeneous core saturated with formation water is selected as the starting point of the research,and based on the effective medium theory HB equation,the semi-empirical resistivity model of the core is established. The temperature parameter is introduced in the resistivity model for the first time by considering the effect of temperature on the resistivity of formation water and the resistivity of the rock particles respectively. And the applicability of this model is verified by the experimental data in the relevant literature which can effectively reflect the relationship between temperature and the resistivity of homogeneous core saturated formation water. The establishment of this model has certain theoretical basis,which will help further study the change rules of core resistivity in reservoir environment.
出处
《天然气与石油》
2017年第6期71-73,90,共4页
Natural Gas and Oil
基金
山东省自然科学基金项目"基于微纳渗流理论的电热强化开采页岩气藏多场耦合机理及模型研究"(2014 ZRE28041)
关键词
电阻率
温度
等效介质理论
均质岩心
饱和地层水
Resistivity
Temperature
Effective medium theories
Homogeneous core
Saturated formation water
