地球物理学进展 ›› 2020, Vol. 35 ›› Issue (3): 1099-1108.doi: 10.6038/pg2020DD0486

• 应用地球物理学Ⅰ(油气及金属矿产地球物理勘探) • 上一篇    下一篇

三维数字岩心技术岩石物理应用研究进展

赵建鹏1, 陈惠2, 李宁3, 丁泾莉2, 高建申4   

  1. 1. 西安石油大学地球科学与工程学院,陕西省油气成藏地质学重点实验室,西安 710065
    2. 中国石油集团测井有限公司长庆分公司,西安 710201
    3. 中国石油新疆油田分公司重油开发公司,克拉玛依 834000
    4. 西安石油大学电子工程学院,西安 710065
  • 收稿日期:2019-11-25 修回日期:2020-02-04 出版日期:2020-06-20 发布日期:2020-06-29
  • 作者简介:赵建鹏,男,1987年生,博士,讲师,主要从事测井储层评价和岩石物理属性模拟研究. E-mail: zjpsnow@126.com
  • 基金资助:
    国家自然科学基金项目(41804125);国家自然科学基金项目(41804115);陕西省自然科学基础研究计划(2018JQ4043);陕西省自然科学基础研究计划(2019JQ-403);陕西省教育厅科研计划(18JK0619)

Research advance of petrophysical application based on digital core technology

ZHAO Jian-peng1, CHEN Hui2, LI Ning3, DING Jing-Li2, GAO Jian-shen4   

  1. 1. School of Earth Sciences and Engineering, Shaanxi Key Laboratory of Petroleum Accumulation Geology, Xi’an Shiyou University, Xi’an 710065, China
    2. Changqing Division, China Petroleum Logging Company Limited, Xi’an 710201, China
    3. Heavy Oil Developed Company, Xinjiang Oilfield Company, Karamay 834000, China
    4. School of Electronic Engineering, Xi’an Shiyou University, Xi’an 710065, China
  • Received:2019-11-25 Revised:2020-02-04 Online:2020-06-20 Published:2020-06-29

摘要:

三维数字岩心可在孔隙尺度上对岩石的微观结构进行精细表征,以数字岩心为载体的岩石微观结构分析与岩石物理属性模拟研究已成为岩石物理分析的重要发展方向之一.本文从数字岩心建模、数字岩心图像分析及岩石物理属性模拟三个方面对数字岩心技术进行了介绍.将数字岩心技术在岩石物理领域的应用分为两大类:基于三维数字图像的直接分析和基于三维数字岩心的岩石物理属性数值模拟.通过三维图像分析可获得孔隙结构、矿物成分、粒度分布等信息;通过岩石物理属性模拟可以研究储层岩石电性、弹性、渗流和核磁共振特征.多种手段相结合建立多尺度、多组分数字岩心,突破分辨率与样品尺度的矛盾限制是数字岩心技术未来的发展趋势.数字岩心技术已发展成为岩石物理实验的重要组成部分,如何将孔隙尺度得到的岩石物理参数升尺度到数字井筒、数字油藏中是数字岩心技术发展亟需解决的难题.

关键词: 数字岩心, 岩石物理, 微观结构, 图像分析, 数值模拟

Abstract:

The three-dimensional digital core reflects the microscopic pore structure of the rock more realistically on the pore scale. The rock structure analysis and petrophysical numerical simulation based on digital core have become one of the important directions of petrophysical analysis. This paper introduces digital core technology from three aspects: digital core reconstruction, digital core image analysis and petrophysical property simulation. The application of digital core technology in the field of petrophysics is divided into two categories: direct analysis based on 3D digital images and numerical simulation of petrophysical properties based on 3D digital cores. The pore structure, mineral composition, grain size distribution and other information can be obtained through image analysis. The rock electrical, elastic, percolation characteristics and nuclear magnetic resonance characteristics can be simulated by rock physical numerical simulation. The combination of multiple methods to construct multi-scale, multi-component digital cores and overcome the contradiction between resolution and sample size is the development trend of digital core technology. Digital core technology has developed into an important part of petrophysical experiments. How to upscale the petrophysical parameters obtained from the pore scale into digital wellbore and digital reservoirs is an urgent problem to be solved in the development of digital core technology.

Key words: Digital core, Petrophysics, Micro-structure, Image analysis, Numerical simulation

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