摘要
研究储层岩石的等效电学参数有助于判断地下油气储藏分布和鉴别油水层,以数字化方法开展精确岩石模型的等效电学参数计算及评价工作对岩石物理理论、实验方法发展及电测井应用等都具有重要的意义。数字岩心技术作为一种新兴的岩心分析方法,已逐渐成为研究岩石等效电学参数的有效方法之一。笔者基于数字岩心及电磁仿真技术,系统性地开展了样本图像数据处理、三维岩石数值模型转化及其等效电学参数计算等工作,对砂岩、页岩等4种岩石样本进行计算和分析,这一套针对扫描岩心图像的数据处理、数值模型转换以及电磁参数计算方法可应用于高效、精确分析不同类型数字岩心的介电常数、电导率等电磁学特性,可为岩石物理、测井解释、储层评价等领域提供重要的参考依据。
The study of the effective electrical properties of reservoir rocks can be used to determine the distribution of underground oil and gas storage and identify the oil and water layers.The accurate evaluation of the effective electrical properties of rock models by digital means is of great significance not only forthe theoretical rock physics but also for the development of experimental methods and the application of electrical logging methods.As a new core analysis method,digital rock core technology has gradually become one of the effective methods for studying the effective electrical properties of rocks.Based on the technology of digital core and electromagnetic simulation,the data processing for sample image dataset,the authors carried out the numerical 3D rock model transformation and the computation of the effective electrical properties systematically.Furthermore,four types of rock samples such as sandstone and shale were investigated to discuss the validity and accuracy of the numerical core analysis method.This set of methods for data processing,numerical model conversion and calculation of electromagnetic parameters for scanned core images can be used to efficiently and accurately analyze different types of digital core dielectric constant,conductivity and other properties,which can provide important reference for such fields as rock physics,logging interpretation and reservoir evaluation.
作者
靳钊
王凡
郭晨
贺之莉
王晓丽
JIN Zhao;WANG Fan;GUO Chen;HE Zhi-Li;WANG Xiao-Li(Electromagnetic Exploration Technology Laboratory School of Information Engineering,Chang an University,Xi an 710064,China)
出处
《物探与化探》
CAS
CSCD
北大核心
2018年第6期1280-1288,共9页
Geophysical and Geochemical Exploration
基金
陕西省科技计划项目(2018GY-019)
中央高校基本科研业务专项项目(310824173702)
国家自然科学基金项目(41874140
41704107
41404095)
陕西省高校科协青年人才托举计划项目(20180107)
关键词
数字岩心
孔隙度
岩石图像
电特性
电磁数值计算
digital core
porosity
core images
electrical properties
electromagnetic numerical simulation