石油实验地质2025，Vol.47Issue(3)：659-670,12.DOI:10.11781/sysydz2025030659
油气勘探领域微米CT实验关键技术探讨及应用
Discussion on key technologies in micro-CT experiments and their applications in oil and gas exploration
摘要
Abstract
Micro-CT technology has been widely applied in oil and gas exploration and development.However,unified standards for key control parameters and data processing methods have yet to be established,significantly affecting data accuracy and comparability.To systematically study the impact of micro-CT experimental parameters on test results,seven representative samples from the Beibuwan Basin and the Yinggehai Basin in the South China Sea were used as the research subjects.The research focused on the impact of scanning resolution,representative volume element(RVE)size,and data processing methods on experimental outcomes.The findings indicated that:(1)A fixed scanning resolution is a key factor in ensuring data reliability,as it significantly affects the extraction of pore structure parameters and subsequent analysis.Resolution should be optimized considering sample size and lithological characteristics.(2)For characterizing the porosity of sandstone samples,better result accu-racy can be achieved by increasing the RVE size.While constructing pore network models,the RVE size should be no smaller than 600×600×600 voxels to ensure model representativeness.(3)Use interval-based statistics to calculate the cumulative volume frequency of pore diameters(Φ),and plot the pore size distribution curves.Use the volumetric method to calculate the average pore diameter.These methods can provide a more accurate charac-terization of rock pore structure.The study offers theoretical support for the application and workflow optimization of micro-CT technology in oil and gas exploration,providing a reference for establishing experimental standards.关键词
微米CT/检测分辨率/表征性体积单元/孔隙结构参数/数据处理Key words
micro-CT/scanning resolution/representative volume element/pore structure parameters/data processing分类
石油、天然气工程引用本文复制引用
黄向胜,罗程飞,张群,陈金定,张耀元,刘晓文..油气勘探领域微米CT实验关键技术探讨及应用[J].石油实验地质,2025,47(3):659-670,12.基金项目
广东省南海复杂油气藏勘探开发重点实验室、中海石油(中国)集团公司"十四五"重大科技项目子课题"多尺度数字岩心数据赋能关键技术"(KJGG2024-15-0102)资助. （中国）
